Meteorological Radars - Harmonised Standard for access to radio spectrum - Part 1: Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz (S band)

DEN/ERM-TGAERO-42-1

Meteorološki radarji - Harmonizirani standard za dostop do radijskega spektra - 1. del: Meteorološki radarski senzor, ki deluje v frekvenčnem pasu od 2700 MHz do 2900 MHz (pas S)

General Information

Status
Published
Public Enquiry End Date
31-Jul-2020
Publication Date
01-Jul-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Jun-2021
Due Date
12-Aug-2021
Completion Date
02-Jul-2021

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 303 347-1 V2.1.1:2021
01-september-2021

Meteorološki radarji - Harmonizirani standard za dostop do radijskega spektra - 1.

del: Meteorološki radarski senzor, ki deluje v frekvenčnem pasu od 2700 MHz do
2900 MHz (pas S)

Meteorological Radars - Harmonised Standard for access to radio spectrum - Part 1:

Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz

(S band)
Ta slovenski standard je istoveten z: ETSI EN 303 347-1 V2.1.1 (2021-06)
ICS:
07.060 Geologija. Meteorologija. Geology. Meteorology.
Hidrologija Hydrology
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
SIST EN 303 347-1 V2.1.1:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 303 347-1 V2.1.1:2021
---------------------- Page: 2 ----------------------
SIST EN 303 347-1 V2.1.1:2021
ETSI EN 303 347-1 V2.1.1 (2021-06)
HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 1: Meteorological Radar Sensor operating
in the frequency band 2 700 MHz to 2 900 MHz (S band)
---------------------- Page: 3 ----------------------
SIST EN 303 347-1 V2.1.1:2021
2 ETSI EN 303 347-1 V2.1.1 (2021-06)
Reference
DEN/ERM-TGAERO-42-1
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

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Users of the present document should be aware that the document may be subject to revision or change of status.

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If you find errors in the present document, please send your comment to one of the following services:

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Notice of disclaimer & limitation of liability

The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of

experience to understand and interpret its content in accordance with generally accepted engineering or

other professional standard and applicable regulations.

No recommendation as to products and services or vendors is made or should be implied.

In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not

limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property

rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages

for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use

of or inability to use the software.
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and

microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2021.
All rights reserved.
ETSI
---------------------- Page: 4 ----------------------
SIST EN 303 347-1 V2.1.1:2021
3 ETSI EN 303 347-1 V2.1.1 (2021-06)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols ............................................................................................................................................................ 10

3.3 Abbreviations ................................................................................................................................................... 10

4 Technical requirements specifications ................................................................................................... 11

4.1 Environmental profile ....................................................................................................................................... 11

4.2 Conformance requirements .............................................................................................................................. 11

4.2.1 Transmitter requirements ............................................................................................................................ 11

4.2.1.1 Frequency Tolerance ............................................................................................................................. 11

4.2.1.1.1 Definition......................................................................................................................................... 11

4.2.1.1.2 Limits .............................................................................................................................................. 11

4.2.1.1.3 Conformance ................................................................................................................................... 11

4.2.1.2 Transmitter output power ...................................................................................................................... 11

4.2.1.2.1 Definition......................................................................................................................................... 11

4.2.1.2.2 Limits .............................................................................................................................................. 12

4.2.1.2.3 Conformance ................................................................................................................................... 12

4.2.1.3 Measured B Bandwidth ..................................................................................................................... 12

-40

4.2.1.3.1 Definition......................................................................................................................................... 12

4.2.1.3.2 Limits .............................................................................................................................................. 12

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Out-of-Band emissions .......................................................................................................................... 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 14

4.2.1.5 Spurious emissions ................................................................................................................................ 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 15

4.2.1.5.3 Conformance ................................................................................................................................... 15

4.2.1.6 Stand-by Mode emissions ..................................................................................................................... 16

4.2.1.6.1 Definition......................................................................................................................................... 16

4.2.1.6.2 Limits .............................................................................................................................................. 16

4.2.1.6.3 Conformance ................................................................................................................................... 16

4.2.2 Receiver Requirements ............................................................................................................................... 16

4.2.2.1 Noise Figure .......................................................................................................................................... 16

4.2.2.1.1 Definition......................................................................................................................................... 16

4.2.2.1.2 Limits .............................................................................................................................................. 16

4.2.2.1.3 Conformance ................................................................................................................................... 16

4.2.2.2 Receiver Selectivity .............................................................................................................................. 16

4.2.2.2.1 Definition......................................................................................................................................... 16

4.2.2.2.2 Limits .............................................................................................................................................. 16

4.2.2.2.3 Conformance ................................................................................................................................... 18

4.2.2.3 Receiver Compression Level ................................................................................................................ 18

4.2.2.3.1 Definition......................................................................................................................................... 18

4.2.2.3.2 Limit ................................................................................................................................................ 19

4.2.2.3.3 Conformance ................................................................................................................................... 19

5 Testing for compliance with technical requirements .............................................................................. 19

5.1 General requirements ....................................................................................................................................... 19

ETSI
---------------------- Page: 5 ----------------------
SIST EN 303 347-1 V2.1.1:2021
4 ETSI EN 303 347-1 V2.1.1 (2021-06)

5.2 Environmental conditions for testing ............................................................................................................... 20

5.2.1 Test Conditions ........................................................................................................................................... 20

5.2.2 Normal temperature and humidity .............................................................................................................. 20

5.2.3 Normal test power supply ........................................................................................................................... 20

5.3 Radio test suites ................................................................................................................................................ 20

5.3.1 Transmitter test specification ...................................................................................................................... 20

5.3.1.1 Frequency Tolerance ............................................................................................................................. 20

5.3.1.2 Transmitter Power ................................................................................................................................. 21

5.3.1.3 Measured B Bandwidth ..................................................................................................................... 21

-40

5.3.1.4 Out-of-Band emissions .......................................................................................................................... 21

5.3.1.5 Spurious emissions ................................................................................................................................ 23

5.3.1.6 Stand-by Mode Emissions ..................................................................................................................... 24

5.3.2 Receiver Test specification ......................................................................................................................... 25

5.3.2.1 Noise Figure .......................................................................................................................................... 25

5.3.2.2 Receiver Selectivity .............................................................................................................................. 25

5.3.2.2.1 General ............................................................................................................................................ 25

5.3.2.2.2 Receiver unwanted Signal Selectivity ............................................................................................. 26

5.3.2.3 Receiver Compression Level ................................................................................................................ 26

5.3.2.3.1 General ............................................................................................................................................ 26

5.3.2.3.2 Receiver Compression Level ........................................................................................................... 26

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 27

Annex B (normative): Calculation of the -40 dB Bandwidth ........................................................... 28

Annex C (normative): Operating frequency and transmitter power measurement setup ............ 30

Annex D (normative): Spurious and OoB emission measurement setup ........................................ 31

Annex E (normative): Receiver selectivity and compression level measurement setup ................ 32

Annex F (informative): Maximum Measurement Uncertainty .......................................................... 33

Annex G (informative): WR284/WG10 waveguide characteristics .................................................... 34

Annex H (informative): Checklist ......................................................................................................... 36

History .............................................................................................................................................................. 38

ETSI
---------------------- Page: 6 ----------------------
SIST EN 303 347-1 V2.1.1:2021
5 ETSI EN 303 347-1 V2.1.1 (2021-06)
Intellectual Property Rights
Essential patents

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Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,

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Foreword

This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM).

The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive and associated

EFTA regulations.

The present document is part 1 of a multi-part deliverable covering meteorological radar systems for different frequency

bands, as identified below:

Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz

(S band)";

Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";

Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz (X band)".

ETSI
---------------------- Page: 7 ----------------------
SIST EN 303 347-1 V2.1.1:2021
6 ETSI EN 303 347-1 V2.1.1 (2021-06)
National transposition dates
Date of adoption of this EN: 31 May 2021
Date of latest announcement of this EN (doa): 31 August 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2022
Date of withdrawal of any conflicting National Standard (dow): 28 February 2023
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 8 ----------------------
SIST EN 303 347-1 V2.1.1:2021
7 ETSI EN 303 347-1 V2.1.1 (2021-06)
1 Scope

The present document specifies technical characteristics and methods of measurements for S band meteorological radar

systems intended for the surveillance and classification of hydrometeors with the following characteristics:

• Operating in the following frequency range:
- 2 700 MHz to 2 900 MHz.

• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.

• The maximum output power (PEP) does not exceed 1 MW (i.e. 90 dBm).

• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.

• The antenna rotates and can be changed in elevation.

• The used waveguide is WR284/WG10 waveguide according to IEC 60153-2 [i.2] with a minimum length

between the output of the transmitter and the input of the antenna of 2 886 mm (20 times the wavelength of the

waveguide cut-off frequency).
• The antenna feed is waveguide based and the antenna is passive.

• The orientation of the transmitted field from the antenna can be vertical or horizontal polarized or it can be

both simultaneously.
• At the transceiver output an RF circulator is used.

NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.

NOTE 2: According to provision 5.423 of the ITU Radio Regulations [i.7], ground-based radars used for

meteorological purposes in the band 2 700 MHz to 2 900 MHz are authorized to operate on a basis of

equality with stations of the aeronautical radio navigation service.

NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in

Recommendation ITU-R M.1849-1 [i.3].

NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
ETSI
---------------------- Page: 9 ----------------------
SIST EN 303 347-1 V2.1.1:2021
8 ETSI EN 303 347-1 V2.1.1 (2021-06)

[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted

emissions of radar systems".
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based

meteorological radars".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.

[i.6] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the

production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive

2014/53/EU".
[i.7] ITU Radio Regulations (2020).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].

assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

assigned frequency band: frequency band within which the emission of a station is authorized

NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency

tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum

Doppler shift that may occur in relation to any point of the Earth's surface.
ETSI
---------------------- Page: 10 ----------------------
SIST EN 303 347-1 V2.1.1:2021
9 ETSI EN 303 347-1 V2.1.1 (2021-06)
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

characteristic frequency: frequency which can be easily identified and measured in a given emission

NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.

NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes

NOTE: The declared band for a given region or country is always contained within the allocated band.

frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an

emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency

NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

idle/standby state: state where the transmitter is available for operation, but is not in the active state

necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of

information at the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from the ITU Radio Regulations [i.7].

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which

results from the modulation process, but excluding spur
...

ETSI EN 303 347-1 V2.1.1 (2021-06)
HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 1: Meteorological Radar Sensor operating
in the frequency band 2 700 MHz to 2 900 MHz (S band)
---------------------- Page: 1 ----------------------
2 ETSI EN 303 347-1 V2.1.1 (2021-06)
Reference
DEN/ERM-TGAERO-42-1
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Notice of disclaimer & limitation of liability

The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of

experience to understand and interpret its content in accordance with generally accepted engineering or

other professional standard and applicable regulations.

No recommendation as to products and services or vendors is made or should be implied.

In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not

limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property

rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages

for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use

of or inability to use the software.
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and

microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2021.
All rights reserved.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI EN 303 347-1 V2.1.1 (2021-06)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols ............................................................................................................................................................ 10

3.3 Abbreviations ................................................................................................................................................... 10

4 Technical requirements specifications ................................................................................................... 11

4.1 Environmental profile ....................................................................................................................................... 11

4.2 Conformance requirements .............................................................................................................................. 11

4.2.1 Transmitter requirements ............................................................................................................................ 11

4.2.1.1 Frequency Tolerance ............................................................................................................................. 11

4.2.1.1.1 Definition......................................................................................................................................... 11

4.2.1.1.2 Limits .............................................................................................................................................. 11

4.2.1.1.3 Conformance ................................................................................................................................... 11

4.2.1.2 Transmitter output power ...................................................................................................................... 11

4.2.1.2.1 Definition......................................................................................................................................... 11

4.2.1.2.2 Limits .............................................................................................................................................. 12

4.2.1.2.3 Conformance ................................................................................................................................... 12

4.2.1.3 Measured B Bandwidth ..................................................................................................................... 12

-40

4.2.1.3.1 Definition......................................................................................................................................... 12

4.2.1.3.2 Limits .............................................................................................................................................. 12

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Out-of-Band emissions .......................................................................................................................... 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 14

4.2.1.5 Spurious emissions ................................................................................................................................ 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 15

4.2.1.5.3 Conformance ................................................................................................................................... 15

4.2.1.6 Stand-by Mode emissions ..................................................................................................................... 16

4.2.1.6.1 Definition......................................................................................................................................... 16

4.2.1.6.2 Limits .............................................................................................................................................. 16

4.2.1.6.3 Conformance ................................................................................................................................... 16

4.2.2 Receiver Requirements ............................................................................................................................... 16

4.2.2.1 Noise Figure .......................................................................................................................................... 16

4.2.2.1.1 Definition......................................................................................................................................... 16

4.2.2.1.2 Limits .............................................................................................................................................. 16

4.2.2.1.3 Conformance ................................................................................................................................... 16

4.2.2.2 Receiver Selectivity .............................................................................................................................. 16

4.2.2.2.1 Definition......................................................................................................................................... 16

4.2.2.2.2 Limits .............................................................................................................................................. 16

4.2.2.2.3 Conformance ................................................................................................................................... 18

4.2.2.3 Receiver Compression Level ................................................................................................................ 18

4.2.2.3.1 Definition......................................................................................................................................... 18

4.2.2.3.2 Limit ................................................................................................................................................ 19

4.2.2.3.3 Conformance ................................................................................................................................... 19

5 Testing for compliance with technical requirements .............................................................................. 19

5.1 General requirements ....................................................................................................................................... 19

ETSI
---------------------- Page: 3 ----------------------
4 ETSI EN 303 347-1 V2.1.1 (2021-06)

5.2 Environmental conditions for testing ............................................................................................................... 20

5.2.1 Test Conditions ........................................................................................................................................... 20

5.2.2 Normal temperature and humidity .............................................................................................................. 20

5.2.3 Normal test power supply ........................................................................................................................... 20

5.3 Radio test suites ................................................................................................................................................ 20

5.3.1 Transmitter test specification ...................................................................................................................... 20

5.3.1.1 Frequency Tolerance ............................................................................................................................. 20

5.3.1.2 Transmitter Power ................................................................................................................................. 21

5.3.1.3 Measured B Bandwidth ..................................................................................................................... 21

-40

5.3.1.4 Out-of-Band emissions .......................................................................................................................... 21

5.3.1.5 Spurious emissions ................................................................................................................................ 23

5.3.1.6 Stand-by Mode Emissions ..................................................................................................................... 24

5.3.2 Receiver Test specification ......................................................................................................................... 25

5.3.2.1 Noise Figure .......................................................................................................................................... 25

5.3.2.2 Receiver Selectivity .............................................................................................................................. 25

5.3.2.2.1 General ............................................................................................................................................ 25

5.3.2.2.2 Receiver unwanted Signal Selectivity ............................................................................................. 26

5.3.2.3 Receiver Compression Level ................................................................................................................ 26

5.3.2.3.1 General ............................................................................................................................................ 26

5.3.2.3.2 Receiver Compression Level ........................................................................................................... 26

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 27

Annex B (normative): Calculation of the -40 dB Bandwidth ........................................................... 28

Annex C (normative): Operating frequency and transmitter power measurement setup ............ 30

Annex D (normative): Spurious and OoB emission measurement setup ........................................ 31

Annex E (normative): Receiver selectivity and compression level measurement setup ................ 32

Annex F (informative): Maximum Measurement Uncertainty .......................................................... 33

Annex G (informative): WR284/WG10 waveguide characteristics .................................................... 34

Annex H (informative): Checklist ......................................................................................................... 36

History .............................................................................................................................................................. 38

ETSI
---------------------- Page: 4 ----------------------
5 ETSI EN 303 347-1 V2.1.1 (2021-06)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations

pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be

found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to

ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the

ETSI Web server (https://ipr.etsi.org/).

Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,

including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not

referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,

essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP

Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the

oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.

Foreword

This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM).

The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive and associated

EFTA regulations.

The present document is part 1 of a multi-part deliverable covering meteorological radar systems for different frequency

bands, as identified below:

Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz

(S band)";

Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";

Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz (X band)".

ETSI
---------------------- Page: 5 ----------------------
6 ETSI EN 303 347-1 V2.1.1 (2021-06)
National transposition dates
Date of adoption of this EN: 31 May 2021
Date of latest announcement of this EN (doa): 31 August 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2022
Date of withdrawal of any conflicting National Standard (dow): 28 February 2023
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 6 ----------------------
7 ETSI EN 303 347-1 V2.1.1 (2021-06)
1 Scope

The present document specifies technical characteristics and methods of measurements for S band meteorological radar

systems intended for the surveillance and classification of hydrometeors with the following characteristics:

• Operating in the following frequency range:
- 2 700 MHz to 2 900 MHz.

• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.

• The maximum output power (PEP) does not exceed 1 MW (i.e. 90 dBm).

• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.

• The antenna rotates and can be changed in elevation.

• The used waveguide is WR284/WG10 waveguide according to IEC 60153-2 [i.2] with a minimum length

between the output of the transmitter and the input of the antenna of 2 886 mm (20 times the wavelength of the

waveguide cut-off frequency).
• The antenna feed is waveguide based and the antenna is passive.

• The orientation of the transmitted field from the antenna can be vertical or horizontal polarized or it can be

both simultaneously.
• At the transceiver output an RF circulator is used.

NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.

NOTE 2: According to provision 5.423 of the ITU Radio Regulations [i.7], ground-based radars used for

meteorological purposes in the band 2 700 MHz to 2 900 MHz are authorized to operate on a basis of

equality with stations of the aeronautical radio navigation service.

NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in

Recommendation ITU-R M.1849-1 [i.3].

NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
ETSI
---------------------- Page: 7 ----------------------
8 ETSI EN 303 347-1 V2.1.1 (2021-06)

[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted

emissions of radar systems".
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based

meteorological radars".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.

[i.6] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the

production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive

2014/53/EU".
[i.7] ITU Radio Regulations (2020).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].

assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

assigned frequency band: frequency band within which the emission of a station is authorized

NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency

tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum

Doppler shift that may occur in relation to any point of the Earth's surface.
ETSI
---------------------- Page: 8 ----------------------
9 ETSI EN 303 347-1 V2.1.1 (2021-06)
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

characteristic frequency: frequency which can be easily identified and measured in a given emission

NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.

NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes

NOTE: The declared band for a given region or country is always contained within the allocated band.

frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an

emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency

NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

idle/standby state: state where the transmitter is available for operation, but is not in the active state

necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of

information at the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from the ITU Radio Regulations [i.7].

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which

results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a

transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating

conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)

pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage) in seconds

receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted

interfering signal outside the B bandwidth
-40
ETSI
---------------------- Page: 9 ----------------------
10 ETSI EN 303 347-1 V2.1.1 (2021-06)

reference frequency: frequency having a fixed and specified position with respect to the assigned frequency

NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value

and sign th
...

Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)
HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 1: Meteorological Radar Sensor operating
in the frequency band 2 700 MHz to 2 900 MHz (S band)
---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)
Reference
DEN/ERM-TGAERO-42-1
Keywords
harmonised standard, radar, radio
ETSI
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© ETSI 2021.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols ............................................................................................................................................................ 10

3.3 Abbreviations ................................................................................................................................................... 10

4 Technical requirements specifications ................................................................................................... 11

4.1 Environmental profile ....................................................................................................................................... 11

4.2 Conformance requirements .............................................................................................................................. 11

4.2.1 Transmitter requirements ............................................................................................................................ 11

4.2.1.1 Frequency Tolerance ............................................................................................................................. 11

4.2.1.1.1 Definition......................................................................................................................................... 11

4.2.1.1.2 Limits .............................................................................................................................................. 11

4.2.1.1.3 Conformance ................................................................................................................................... 11

4.2.1.2 Transmitter output power ...................................................................................................................... 11

4.2.1.2.1 Definition......................................................................................................................................... 11

4.2.1.2.2 Limits .............................................................................................................................................. 12

4.2.1.2.3 Conformance ................................................................................................................................... 12

4.2.1.3 Measured B Bandwidth ..................................................................................................................... 12

-40

4.2.1.3.1 Definition......................................................................................................................................... 12

4.2.1.3.2 Limits .............................................................................................................................................. 12

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Out-of-Band emissions .......................................................................................................................... 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 14

4.2.1.5 Spurious emissions ................................................................................................................................ 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 15

4.2.1.5.3 Conformance ................................................................................................................................... 15

4.2.1.6 Stand-by Mode emissions ..................................................................................................................... 16

4.2.1.6.1 Definition......................................................................................................................................... 16

4.2.1.6.2 Limits .............................................................................................................................................. 16

4.2.1.6.3 Conformance ................................................................................................................................... 16

4.2.2 Receiver Requirements ............................................................................................................................... 16

4.2.2.1 Noise Figure .......................................................................................................................................... 16

4.2.2.1.1 Definition......................................................................................................................................... 16

4.2.2.1.2 Limits .............................................................................................................................................. 16

4.2.2.1.3 Conformance ................................................................................................................................... 16

4.2.2.2 Receiver Selectivity .............................................................................................................................. 16

4.2.2.2.1 Definition......................................................................................................................................... 16

4.2.2.2.2 Limits .............................................................................................................................................. 16

4.2.2.2.3 Conformance ................................................................................................................................... 18

4.2.2.3 Receiver Compression Level ................................................................................................................ 18

4.2.2.3.1 Definition......................................................................................................................................... 18

4.2.2.3.2 Limit ................................................................................................................................................ 19

4.2.2.3.3 Conformance ................................................................................................................................... 19

5 Testing for compliance with technical requirements .............................................................................. 19

5.1 General requirements ....................................................................................................................................... 19

ETSI
---------------------- Page: 3 ----------------------
4 Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)

5.2 Environmental conditions for testing ............................................................................................................... 20

5.2.1 Test Conditions ........................................................................................................................................... 20

5.2.2 Normal temperature and humidity .............................................................................................................. 20

5.2.3 Normal test power supply ........................................................................................................................... 20

5.3 Radio test suites ................................................................................................................................................ 20

5.3.1 Transmitter test specification ...................................................................................................................... 20

5.3.1.1 Frequency Tolerance ............................................................................................................................. 20

5.3.1.2 Transmitter Power ................................................................................................................................. 21

5.3.1.3 Measured B Bandwidth ..................................................................................................................... 21

-40

5.3.1.4 Out-of-Band emissions .......................................................................................................................... 21

5.3.1.5 Spurious emissions ................................................................................................................................ 23

5.3.1.6 Stand-by Mode Emissions ..................................................................................................................... 24

5.3.2 Receiver Test specification ......................................................................................................................... 25

5.3.2.1 Noise Figure .......................................................................................................................................... 25

5.3.2.2 Receiver Selectivity .............................................................................................................................. 26

5.3.2.2.1 General ............................................................................................................................................ 26

5.3.2.2.2 Receiver unwanted Signal Selectivity ............................................................................................. 26

5.3.2.3 Receiver Compression Level ................................................................................................................ 27

5.3.2.3.1 General ............................................................................................................................................ 27

5.3.2.3.2 Receiver Compression Level ........................................................................................................... 27

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 28

Annex B (normative): Calculation of the -40 dB Bandwidth ........................................................... 29

Annex C (normative): Operating frequency and transmitter power measurement setup ............ 31

Annex D (normative): Spurious and OoB emission measurement setup ........................................ 32

Annex E (normative): Receiver selectivity and compression level measurement setup ................ 33

Annex F (informative): Maximum Measurement Uncertainty .......................................................... 34

Annex G (informative): WR284/WG10 waveguide characteristics .................................................... 35

Annex H (informative): Checklist ......................................................................................................... 37

History .............................................................................................................................................................. 39

ETSI
---------------------- Page: 4 ----------------------
5 Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This final draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee

Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the

ETSI standards EN Approval Procedure.

The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive and associated

EFTA regulations.

The present document is part 1 of a multi-part deliverable covering meteorological radar systems for different frequency

bands, as identified below:

Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz

(S band)";

Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";

Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz (X band)".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI
---------------------- Page: 5 ----------------------
6 Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 6 ----------------------
7 Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)
1 Scope

The present document specifies technical characteristics and methods of measurements for S band meteorological radar

systems intended for the surveillance and classification of hydrometeors with the following characteristics:

• Operating in the following frequency range:
- 2 700 MHz to 2 900 MHz.

• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.

• The maximum output power (PEP) does not exceed 1 MW (i.e. 90 dBm).

• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.

• The antenna rotates and can be changed in elevation.

• The used waveguide is WR284/WG10 waveguide according to IEC 60153-2 [i.2] with a minimum length

between the output of the transmitter and the input of the antenna of 2 886 mm (20 times the wavelength of the

waveguide cut-off frequency).
• The antenna feed is waveguide based and the antenna is passive.

• The orientation of the transmitted field from the antenna can be vertical or horizontal polarized or it can be

both simultaneously.
• At the transceiver output an RF circulator is used.

NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.

NOTE 2: According to provision 5.423 of the ITU Radio Regulations [i.7], ground-based radars used for

meteorological purposes in the band 2 700 MHz to 2 900 MHz are authorized to operate on a basis of

equality with stations of the aeronautical radio navigation service.

NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in

Recommendation ITU-R M.1849-1 [i.3].

NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
ETSI
---------------------- Page: 7 ----------------------
8 Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)

[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted

emissions of radar systems".
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based

meteorological radars".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.

[i.6] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the

production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive

2014/53/EU".
[i.7] ITU Radio Regulations (2020).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].

assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

assigned frequency band: frequency band within which the emission of a station is authorized

NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency

tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum

Doppler shift that may occur in relation to any point of the Earth's surface.
ETSI
---------------------- Page: 8 ----------------------
9 Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

characteristic frequency: frequency which can be easily identified and measured in a given emission

NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.

NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes

NOTE: The declared band for a given region or country is always contained within the allocated band.

frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an

emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency

NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

idle/standby state: state where the transmitter is available for operation, but is not in the active state

necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of

information at the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from the ITU Radio Regulations [i.7].

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which

results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a

transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating

conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)

pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage) in seconds

receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted

interfering signal outside the B bandwidth
-40
ETSI
---------------------- Page: 9 ----------------------
10 Final draft ETSI EN 303 347-1 V1.1.5 (2021-03)

reference frequency: frequency having a fixed and specified position with respect to the assigned frequency

NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value

and sign that the displacement of the characteristic frequency has with respect to the centre of the

frequency band occupied by the emission.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

spurious emission: emission on a frequency or frequencies which are outside the necessary bandwidth and the level of

which may be reduced without affecting the corresponding transmission of information

NOTE 1: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and

frequency conversion products, but exclude out-of-band emissions.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

system coupler: directional waveguide coupler with forward and reverse port or only a forward port

NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not

directly located behind the antenna. Usually it is located very close b
...

Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)
HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 1: Meteorological Radar Sensor operating
in the frequency band 2 700 MHz to 2 900 MHz (S band)
---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)
Reference
DEN/ERM-TGAERO-42-1
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying

and microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols ............................................................................................................................................................ 10

3.3 Abbreviations ................................................................................................................................................... 10

4 Technical requirements specifications ................................................................................................... 11

4.1 Environmental profile ....................................................................................................................................... 11

4.2 Conformance requirements .............................................................................................................................. 11

4.2.1 Transmitter requirements ............................................................................................................................ 11

4.2.1.1 Frequency Tolerance ............................................................................................................................. 11

4.2.1.1.1 Definition......................................................................................................................................... 11

4.2.1.1.2 Limits .............................................................................................................................................. 11

4.2.1.1.3 Conformance ................................................................................................................................... 11

4.2.1.2 Transmitter output power ...................................................................................................................... 11

4.2.1.2.1 Definition......................................................................................................................................... 11

4.2.1.2.2 Limits .............................................................................................................................................. 11

4.2.1.2.3 Conformance ................................................................................................................................... 12

4.2.1.3 Measured B Bandwidth ..................................................................................................................... 12

-40

4.2.1.3.1 Definition......................................................................................................................................... 12

4.2.1.3.2 Limits .............................................................................................................................................. 12

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Out-of-Band emissions .......................................................................................................................... 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 14

4.2.1.5 Spurious emissions ................................................................................................................................ 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 15

4.2.1.5.3 Conformance ................................................................................................................................... 15

4.2.1.6 Stand-by Mode emissions ..................................................................................................................... 16

4.2.1.6.1 Definition......................................................................................................................................... 16

4.2.1.6.2 Limits .............................................................................................................................................. 16

4.2.1.6.3 Conformance ................................................................................................................................... 16

4.2.2 Receiver Requirements ............................................................................................................................... 16

4.2.2.1 Noise Figure .......................................................................................................................................... 16

4.2.2.1.1 Definition......................................................................................................................................... 16

4.2.2.1.2 Limits .............................................................................................................................................. 16

4.2.2.1.3 Conformance ................................................................................................................................... 16

4.2.2.2 Receiver Selectivity .............................................................................................................................. 16

4.2.2.2.1 Definition......................................................................................................................................... 16

4.2.2.2.2 Limits .............................................................................................................................................. 16

4.2.2.2.3 Conformance ................................................................................................................................... 18

4.2.2.3 Receiver Compression Level ................................................................................................................ 18

4.2.2.3.1 Definition......................................................................................................................................... 18

4.2.2.3.2 Limit ................................................................................................................................................ 19

4.2.2.3.3 Conformance ................................................................................................................................... 19

5 Testing for compliance with technical requirements .............................................................................. 19

5.1 General requirements ....................................................................................................................................... 19

ETSI
---------------------- Page: 3 ----------------------
4 Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)

5.2 Environmental conditions for testing ............................................................................................................... 20

5.2.1 Test Conditions ........................................................................................................................................... 20

5.2.2 Normal temperature and humidity .............................................................................................................. 20

5.2.3 Normal test power supply ........................................................................................................................... 20

5.3 Radio test suites ................................................................................................................................................ 20

5.3.1 Transmitter test specification ...................................................................................................................... 20

5.3.1.1 Frequency Tolerance ............................................................................................................................. 20

5.3.1.2 Transmitter Power ................................................................................................................................. 21

5.3.1.3 Measured B Bandwidth ..................................................................................................................... 21

-40

5.3.1.4 Out-of-Band emissions .......................................................................................................................... 21

5.3.1.5 Spurious emissions ................................................................................................................................ 23

5.3.1.6 Stand-by Mode Emissions ..................................................................................................................... 24

5.3.2 Receiver Test specification ......................................................................................................................... 25

5.3.2.1 Noise Figure .......................................................................................................................................... 25

5.3.2.2 Receiver Selectivity .............................................................................................................................. 26

5.3.2.2.1 General ............................................................................................................................................ 26

5.3.2.2.2 Receiver unwanted Signal Selectivity ............................................................................................. 26

5.3.2.3 Receiver Compression Level ................................................................................................................ 27

5.3.2.3.1 General ............................................................................................................................................ 27

5.3.2.3.2 Receiver Compression Level ........................................................................................................... 27

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 28

Annex B (normative): Calculation of the -40 dB Bandwidth ........................................................... 29

Annex C (normative): Operating frequency and transmitter power measurement setup ............ 31

Annex D (normative): Spurious and OoB emission measurement setup ........................................ 32

Annex E (normative): Receiver selectivity and compression level measurement setup ................ 33

Annex F (informative): Maximum Measurement Uncertainty .......................................................... 34

Annex G (informative): WR284/WG10 waveguide characteristics .................................................... 35

Annex H (informative): Checklist ......................................................................................................... 37

History .............................................................................................................................................................. 39

ETSI
---------------------- Page: 4 ----------------------
5 Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This final draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee

Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the

ETSI standards EN Approval Procedure.

The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated

EFTA regulations.

The present document is part 1 of a multi-part deliverable covering meteorological radar systems for different frequency

bands, as identified below:

Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz

(S band)";

Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";

Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz (X band)".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI
---------------------- Page: 5 ----------------------
6 Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 6 ----------------------
7 Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)
1 Scope

The present document specifies technical characteristics and methods of measurements for S band meteorological radar

systems intended for the surveillance and classification of hydrometeors with the following characteristics:

• Operating in the following frequency range:
- 2 700 MHz to 2 900 MHz.

• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.

• The maximum output power (PEP) does not exceed 1 MW (i.e. 90 dBm).

• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.

• The antenna rotates and can be changed in elevation.

• The used waveguide is WR284/WG10 waveguide according to IEC 60153-2 [i.2] with a minimum length

between the output of the transmitter and the input of the antenna of 2 886 mm (20 times the wavelength of the

waveguide cut-off frequency).
• The antenna feed is waveguide based and the antenna is passive.

• The orientation of the transmitted field from the antenna can be vertical or horizontal polarized or it can be

both simultaneously.
• At the transceiver output an RF circulator is used.

NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.

NOTE 2: According to provision 5.423 of the ITU Radio Regulations [i.7], ground-based radars used for

meteorological purposes in the band 2 700 MHz to 2 900 MHz are authorized to operate on a basis of

equality with stations of the aeronautical radio navigation service.

NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in

Recommendation ITU-R M.1849-1 [i.3].

NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
ETSI
---------------------- Page: 7 ----------------------
8 Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)

[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted

emissions of radar systems".
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based

meteorological radars".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.

[i.6] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the

production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive

2014/53/EU".
[i.7] ITU Radio Regulations (2020).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].

assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

assigned frequency band: frequency band within which the emission of a station is authorized

NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency

tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum

Doppler shift that may occur in relation to any point of the Earth's surface.
ETSI
---------------------- Page: 8 ----------------------
9 Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

characteristic frequency: frequency which can be easily identified and measured in a given emission

NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.

NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes

NOTE: The declared band for a given region or country is always contained within the allocated band.

frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an

emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency

NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

idle/standby state: state where the transmitter is available for operation, but is not in the active state

necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of

information at the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from the ITU Radio Regulations [i.7].

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which

results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a

transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating

conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)

pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage) in seconds

receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted

interfering signal outside the B bandwidth
-40
ETSI
---------------------- Page: 9 ----------------------
10 Final draft ETSI EN 303 347-1 V1.1.4 (2020-12)

reference frequency: frequency having a fixed and specified position with respect to the assigned frequency

NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value

and sign that the displacement of the characteristic frequency has with respect to the centre of the

frequency band occupied by the emission.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

spurious emission: emission on a frequency or frequencies which are outside the necessary bandwidth and the level of

which may be reduced without affecting the corresponding transmission of information

NOTE 1: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and

frequency conversion products, but exclude out-of-band emissions.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

system coupler: directional waveguide coupler with forward and reverse port or only a forward port

NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not

directly located behind the antenna. Usually it is located very close
...

Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 1: Meteorological Radar Sensor operating
in the frequency band 2 700 MHz to 2 900 MHz (S band)
---------------------- Page: 1 ----------------------
2 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
Reference
DEN/ERM-TGAERO-42-1
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

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Copyright Notification

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and microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols ............................................................................................................................................................ 10

3.3 Abbreviations ................................................................................................................................................... 10

4 Technical requirements specifications ................................................................................................... 11

4.1 Environmental profile ....................................................................................................................................... 11

4.2 Conformance requirements .............................................................................................................................. 11

4.2.1 Transmitter requirements ............................................................................................................................ 11

4.2.1.1 Frequency Tolerance ............................................................................................................................. 11

4.2.1.1.1 Definition......................................................................................................................................... 11

4.2.1.1.2 Limits .............................................................................................................................................. 11

4.2.1.1.3 Conformance ................................................................................................................................... 11

4.2.1.2 Transmitter output power ...................................................................................................................... 11

4.2.1.2.1 Definition......................................................................................................................................... 11

4.2.1.2.2 Limits .............................................................................................................................................. 11

4.2.1.2.3 Conformance ................................................................................................................................... 11

4.2.1.3 Measured B Bandwidth ..................................................................................................................... 12

-40

4.2.1.3.1 Definition......................................................................................................................................... 12

4.2.1.3.2 Limits .............................................................................................................................................. 12

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Out-of-Band emissions .......................................................................................................................... 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 14

4.2.1.5 Spurious emissions ................................................................................................................................ 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 15

4.2.1.5.3 Conformance ................................................................................................................................... 15

4.2.1.6 Stand-by Mode emissions ..................................................................................................................... 16

4.2.1.6.1 Definition......................................................................................................................................... 16

4.2.1.6.2 Limits .............................................................................................................................................. 16

4.2.1.6.3 Conformance ................................................................................................................................... 16

4.2.2 Receiver Requirements ............................................................................................................................... 16

4.2.2.1 Noise Figure .......................................................................................................................................... 16

4.2.2.1.1 Definition......................................................................................................................................... 16

4.2.2.1.2 Limits .............................................................................................................................................. 16

4.2.2.1.3 Conformance ................................................................................................................................... 16

4.2.2.2 Receiver Selectivity .............................................................................................................................. 16

4.2.2.2.1 Definition......................................................................................................................................... 16

4.2.2.2.2 Limits .............................................................................................................................................. 16

4.2.2.2.3 Conformance ................................................................................................................................... 18

4.2.2.3 Receiver Compression Level ................................................................................................................ 18

4.2.2.3.1 Definition......................................................................................................................................... 18

4.2.2.3.2 Limit ................................................................................................................................................ 19

4.2.2.3.3 Conformance ................................................................................................................................... 19

5 Testing for compliance with technical requirements .............................................................................. 19

5.1 General requirements ....................................................................................................................................... 19

ETSI
---------------------- Page: 3 ----------------------
4 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)

5.2 Environmental conditions for testing ............................................................................................................... 20

5.2.1 Test Conditions ........................................................................................................................................... 20

5.2.2 Normal temperature and humidity .............................................................................................................. 20

5.2.3 Normal test power supply ........................................................................................................................... 20

5.3 Interpretation of the measurements results ....................................................................................................... 20

5.4 Radio test suites ................................................................................................................................................ 20

5.4.1 Transmitter test specification ...................................................................................................................... 20

5.4.1.1 Frequency Tolerance ............................................................................................................................. 20

5.4.1.2 Transmitter Power ................................................................................................................................. 21

5.4.1.3 Measured B Bandwidth ..................................................................................................................... 21

-40

5.4.1.4 Out-of-Band emissions .......................................................................................................................... 22

5.4.1.5 Spurious emissions ................................................................................................................................ 23

5.4.1.6 Stand-by Mode Emissions ..................................................................................................................... 24

5.4.2 Receiver Test specification ......................................................................................................................... 25

5.4.2.1 Noise Figure .......................................................................................................................................... 25

5.4.2.2 Receiver Selectivity .............................................................................................................................. 25

5.4.2.2.1 General ............................................................................................................................................ 25

5.4.2.2.2 Receiver unwanted Signal Selectivity ............................................................................................. 26

5.4.2.3 Receiver Compression .......................................................................................................................... 26

5.4.2.3.1 General ............................................................................................................................................ 26

5.4.2.3.2 Receiver Compression Level ........................................................................................................... 26

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 27

Annex B (normative): Calculation of the -40 dB Bandwidth ........................................................... 28

Annex C (normative): Operating frequency and transmitter power measurement setup ............ 30

Annex D (normative): Spurious and OoB emission measurement setup ........................................ 31

Annex E (normative): Receiver selectivity and compression level measurement setup ................ 32

Annex F (informative): Maximum Measurement Uncertainty .......................................................... 33

Annex G (informative): WR284/WG10 waveguide characteristics .................................................... 34

Annex H (informative): Checklist ......................................................................................................... 36

History .............................................................................................................................................................. 38

ETSI
---------------------- Page: 4 ----------------------
5 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote

phase of the ETSI standards EN Approval Procedure.

The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated

EFTA regulations.

The present document is part 1 of a multi-part deliverable covering meteorological radar systems for different frequency

bands, as identified below:

Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz

(S band)";

Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";

Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz (X band)".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI
---------------------- Page: 5 ----------------------
6 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 6 ----------------------
7 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
1 Scope

The present document specifies technical characteristics and methods of measurements for S-band meteorological radar

systems intended for the surveillance and classification of hydrometeors with the following characteristics:

• Operating in the following frequency range:
- 2 700 MHz to 2 900 MHz.

• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.

• The maximum output power (PEP) does not exceed 1 MW (i.e. 90 dBm).

• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.

• The antenna rotates and can be changed in elevation.
• The used waveguide is WR284/WG10 waveguide according to IEC 60153-2 [i.2].
• The antenna feed is waveguide based and the antenna is passive.

• The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be

both simultaneously.
• At the transceiver output an RF circulator is used.

NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.

NOTE 2: According to provision 5.423 of the ITU Radio Regulations [i.7], ground-based radars used for

meteorological purposes in the band 2 700 MHz to 2 900 MHz are authorized to operate on a basis of

equality with stations of the aeronautical radio navigation service.

NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in

Recommendation ITU-R M.1849-1 [i.3].

NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".

[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted

emissions of radar systems".
ETSI
---------------------- Page: 7 ----------------------
8 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based

meteorological radars".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.

[i.6] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the

production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive

2014/53/EU".
[i.7] ITU Radio Regulations (2016).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].

assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

assigned frequency band: frequency band within which the emission of a station is authorized

NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency

tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum

Doppler shift that may occur in relation to any point of the Earth's surface.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
ETSI
---------------------- Page: 8 ----------------------
9 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)

characteristic frequency: frequency which can be easily identified and measured in a given emission

NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.

NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes

NOTE: The declared band for a given region or country is always contained within the allocated band.

frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an

emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency

NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

idle/standby state: state where the transmitter is available for operation, but is not in the active state

necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of

information at the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from the ITU Radio Regulations [i.7].

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which

results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a

transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating

conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)

pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage) in seconds

receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted

interfering signal outside the B bandwidth
-40

reference frequency: frequency having a fixed and specified position with respect to the assigned frequency

NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value

and sign that the displacement of the characteristic frequency has with respect to the centre of the

frequency band occupied by the emission.
ETSI
---------------------- Page: 9 ----------------------
10 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

spurious emission: emission on a frequency or frequencies which are outside the necessary bandwidth and the level of

which may be reduced without affecting the corresponding transmission of information

NOTE 1: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and

frequency conversion products, but exclude out-of-band emissions.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

system coupler: directional waveguide coupler with forward and reverse port or only a forward port

NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not

directly located behind the antenna. Usually it is located very close behind the circulator.

3.2 Symbols
For the purpos
...

Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 1: S band Meteorological Radar Sensor operating
in the frequency band 2 700 MHz to 2 900 MHz
---------------------- Page: 1 ----------------------
2 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
Reference
DEN/ERM-TGAERO-42-1
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
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Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying

and microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2019.
All rights reserved.
TM TM TM

DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

TM TM

3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 8

2.1 Normative references ......................................................................................................................................... 8

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 9

3.1 Terms .................................................................................................................................................................. 9

3.2 Symbols ............................................................................................................................................................ 10

3.3 Abbreviations ................................................................................................................................................... 11

4 Technical requirements specifications ................................................................................................... 11

4.1 Environmental profile ....................................................................................................................................... 11

4.2 Conformance requirements .............................................................................................................................. 11

4.2.1 Transmitter requirements ............................................................................................................................ 11

4.2.1.1 Frequency Tolerance ............................................................................................................................. 11

4.2.1.1.1 Definition......................................................................................................................................... 11

4.2.1.1.2 Limits .............................................................................................................................................. 11

4.2.1.1.3 Conformance ................................................................................................................................... 11

4.2.1.2 Transmitter output power ...................................................................................................................... 12

4.2.1.2.1 Definition......................................................................................................................................... 12

4.2.1.2.2 Limits .............................................................................................................................................. 12

4.2.1.2.3 Conformance ................................................................................................................................... 12

4.2.1.3 Measured B Bandwidth ..................................................................................................................... 12

-40

4.2.1.3.1 Definition......................................................................................................................................... 12

4.2.1.3.2 Limits .............................................................................................................................................. 12

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Out-of-Band emissions .......................................................................................................................... 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 14

4.2.1.5 Spurious emissions ................................................................................................................................ 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 15

4.2.1.5.3 Conformance ................................................................................................................................... 15

4.2.1.6 Stand-by Mode Emissions ..................................................................................................................... 16

4.2.1.6.1 Definition......................................................................................................................................... 16

4.2.1.6.2 Limits .............................................................................................................................................. 16

4.2.1.6.3 Conformance ................................................................................................................................... 16

4.2.2 Receiver Requirements ............................................................................................................................... 16

4.2.2.1 Noise Figure .......................................................................................................................................... 16

4.2.2.1.1 Definition......................................................................................................................................... 16

4.2.2.1.2 Limit ................................................................................................................................................ 16

4.2.2.1.3 Conformance ................................................................................................................................... 16

4.2.2.2 Receiver selectivity ............................................................................................................................... 16

4.2.2.2.1 Definition......................................................................................................................................... 16

4.2.2.2.2 Limit ................................................................................................................................................ 16

4.2.2.2.3 Conformance ................................................................................................................................... 18

4.2.2.3 Receiver Compression Level ................................................................................................................ 18

4.2.2.3.1 Definition......................................................................................................................................... 18

4.2.2.3.2 Limit ................................................................................................................................................ 19

4.2.2.3.3 Conformance ................................................................................................................................... 19

5 Testing for compliance with technical requirements .............................................................................. 19

5.1 General requirements ....................................................................................................................................... 19

ETSI
---------------------- Page: 3 ----------------------
4 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)

5.2 Environmental conditions for testing ............................................................................................................... 20

5.2.1 Test Conditions ........................................................................................................................................... 20

5.2.2 Normal temperature and humidity .............................................................................................................. 20

5.2.3 Normal test power supply ........................................................................................................................... 20

5.3 Interpretation of the measurements results ....................................................................................................... 20

5.4 Radio test suites ................................................................................................................................................ 20

5.4.1 Transmitter test specification ...................................................................................................................... 20

5.4.1.1 Frequency Tolerance ............................................................................................................................. 20

5.4.1.2 Transmitter Power ................................................................................................................................. 21

5.4.1.3 Measured B Bandwidth ..................................................................................................................... 21

-40

5.4.1.4 Out-of-Band emissions .......................................................................................................................... 22

5.4.1.5 Spurious emissions ................................................................................................................................ 23

5.4.1.6 Stand-by Mode Emissions ..................................................................................................................... 24

5.4.2 Receiver Test specification ......................................................................................................................... 25

5.4.2.1 Noise Figure .......................................................................................................................................... 25

5.4.2.2 Receiver Selectivity .............................................................................................................................. 25

5.4.2.2.1 General ............................................................................................................................................ 25

5.4.2.2.2 Receiver OoB selectivity ................................................................................................................. 25

5.4.2.3 Receiver Compression .......................................................................................................................... 27

5.4.2.3.1 General ............................................................................................................................................ 27

5.4.2.3.2 Receiver Compression Level ........................................................................................................... 27

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 28

Annex B (normative): Calculation of the -40 dB Bandwidth ........................................................... 29

Annex C (normative): Operating frequency, transmitter power and OoB measurement

setup ................................................................................................................ 31

Annex D (normative): Spurious emission measurement setup ........................................................ 32

Annex E (normative): Receiver selectivity measurement setup ....................................................... 33

Annex F (informative): Maximum Measurement Uncertainty .......................................................... 34

History .............................................................................................................................................................. 35

ETSI
---------------------- Page: 4 ----------------------
5 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote

phase of the ETSI standards EN Approval Procedure.

The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated

EFTA regulations.

The present document is part 1 of a multi-part deliverable covering meteorological radar systems for different frequency

bands, as identified below:

Part 1: "S band Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz";

Part 2: "C band Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz";

Part 3: "X band Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI
---------------------- Page: 5 ----------------------
6 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 6 ----------------------
7 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
1 Scope

The present document specifies technical characteristics and methods of measurements for S-band meteorological radar

systems intended for the surveillance and classification of hydrometeors with the following characteristics:

• Operating in the following frequency range:
- 2 700 MHz to 2 900 MHz.

• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.

• The maximum output power (PEP) does not exceed 1 MW (i.e. 90 dBm).

• The transceiver antenna connection and its feeding RF line are using a hollow metallic rectangular or elliptic

waveguide.
• The antenna is rotating and can be changed in elevation.
• The antenna feed is waveguide based and the antenna is passive.

• The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be

both simultaneously.
• At the transceiver output a RF circulator is used.

NOTE 1: Since transceiver and antenna are based on hollow metallic rectangular waveguide the frequency range

for measurements that needs to be addressed covers 2 077 MHz to 14 500 MHz. The lower limit of this

frequency range is obtained as the cut-off frequency of the generally used WR284/WG10 waveguide

according to IEC 60153-2 [i.2]. The upper limit corresponds to the upper limit stated in

ERC/Recommendation 74-01, Table 1 [1]. The highest operating frequency of 2 900 MHz has been used

to calculate the upper limit.

NOTE 2: Since at the transceiver output a RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.

NOTE 3: Meteorological radar systems covered by the present document are expected to use the band 2 700 MHz

to 2 900 MHz. According to provision 5.423 of the ITU Radio Regulations [4], ground-based radars used

for meteorological purposes in the band 2 700 MHz to 2 900 MHz are authorized to operate on a basis of

equality with stations of the aeronautical radio navigation service.

NOTE 4: Further technical and operational characteristics of meteorological radar systems can be found in

Recommendation ITU-R M.1849-1 [i.3].

NOTE 5: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in Annex A.
ETSI
---------------------- Page: 7 ----------------------
8 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
2 References
2.1 Normative references

References are specific, identified by date of publication and/or edition number or version number. Only the cited

version applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ERC/Recommendation 74-01 (2011): "Unwanted emissions in the spurious domain".

[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".

[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted

emissions of radar systems".
[4] ITU Radio Regulations (2016).
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] IEC 60153-2 (Edition 2.0, 1974): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based

meteorological radars".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.
ETSI
---------------------- Page: 8 ----------------------
9 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. A generic frequency allocation table is also available in the ITU Radio Regulations [4].

assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [4].

assigned frequency band: frequency band within which the emission of a station is authorized

NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency

tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum

Doppler shift that may occur in relation to any point of the Earth's surface.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].

characteristic frequency: frequency which can be easily identified and measured in a given emission

NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.

NOTE 2: This definition is taken from the ITU Radio Regulations [4].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes

NOTE: The declared band for a given region or country is always contained within the allocated band.

frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an

emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency

NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].

idle/standby state: state where the transmitter is available for traffic but is not in the active state

necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of

information at the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from the ITU Radio Regulations [4].

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

ETSI
---------------------- Page: 9 ----------------------
10 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)

out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which

results from the modulation process, but excluding spurious
NOTE: This definition is taken from the ITU Radio Regulations [4].

peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a

transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating

conditions
NOTE: This definition is taken from the ITU Radio Regulations [4].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)

pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage) in seconds

receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted

interfering signal which is usually in the adjacent band

reference frequency: frequency having a fixed and specified position with respect to the assigned frequency

NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value

and sign that the displacement of the characteristic frequency has with respect to the centre of the

frequency band occupied by the emission.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].

spurious emission: emission on a frequency or frequencies which are outside the necessary bandwidth and the level of

which may be reduced without affecting the corresponding transmission of information

NOTE 1: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and

frequency conversion products, but exclude out-of-band emissions.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].

system coupler: high power directional waveguide coupler with forward and reverse port or only a forward port

NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not

directly located behind the antenn
...

SLOVENSKI STANDARD
oSIST prEN 303 347-1 V1.1.0:2019
01-junij-2019

0HWHRURORãNLUDGDUML+DUPRQL]LUDQLVWDQGDUG]DGRVWRSGRUDGLMVNHJDVSHNWUD

GHO0HWHRURORãNLUDGDUVNLVHQ]RU6SDVXNLGHOXMHYIUHNYHQþQHPSDVXRG
0+]GR0+]

Meteorological Radars - Harmonised Standard for access to radio spectrum - Part 1: S

band Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900

MHz
Ta slovenski standard je istoveten z: ETSI EN 303 347-1 V1.1.0 (2019-04)
ICS:
07.060 Geologija. Meteorologija. Geology. Meteorology.
Hidrologija Hydrology
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
oSIST prEN 303 347-1 V1.1.0:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
---------------------- Page: 2 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 1: S band Meteorological Radar Sensor operating
in the frequency band 2 700 MHz to 2 900 MHz
---------------------- Page: 3 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
2 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
Reference
DEN/ERM-TGAERO-42-1
Keywords
harmonised standard, radar, radio
ETSI
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ETSI
---------------------- Page: 4 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
3 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 8

2.1 Normative references ......................................................................................................................................... 8

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 9

3.1 Terms .................................................................................................................................................................. 9

3.2 Symbols ............................................................................................................................................................ 10

3.3 Abbreviations ................................................................................................................................................... 11

4 Technical requirements specifications ................................................................................................... 11

4.1 Environmental profile ....................................................................................................................................... 11

4.2 Conformance requirements .............................................................................................................................. 11

4.2.1 Transmitter requirements ............................................................................................................................ 11

4.2.1.1 Frequency Tolerance ............................................................................................................................. 11

4.2.1.1.1 Definition......................................................................................................................................... 11

4.2.1.1.2 Limits .............................................................................................................................................. 11

4.2.1.1.3 Conformance ................................................................................................................................... 11

4.2.1.2 Transmitter output power ...................................................................................................................... 12

4.2.1.2.1 Definition......................................................................................................................................... 12

4.2.1.2.2 Limits .............................................................................................................................................. 12

4.2.1.2.3 Conformance ................................................................................................................................... 12

4.2.1.3 Measured B Bandwidth ..................................................................................................................... 12

-40

4.2.1.3.1 Definition......................................................................................................................................... 12

4.2.1.3.2 Limits .............................................................................................................................................. 12

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Out-of-Band emissions .......................................................................................................................... 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 14

4.2.1.5 Spurious emissions ................................................................................................................................ 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 15

4.2.1.5.3 Conformance ................................................................................................................................... 15

4.2.1.6 Stand-by Mode Emissions ..................................................................................................................... 16

4.2.1.6.1 Definition......................................................................................................................................... 16

4.2.1.6.2 Limits .............................................................................................................................................. 16

4.2.1.6.3 Conformance ................................................................................................................................... 16

4.2.2 Receiver Requirements ............................................................................................................................... 16

4.2.2.1 Noise Figure .......................................................................................................................................... 16

4.2.2.1.1 Definition......................................................................................................................................... 16

4.2.2.1.2 Limit ................................................................................................................................................ 16

4.2.2.1.3 Conformance ................................................................................................................................... 16

4.2.2.2 Receiver selectivity ............................................................................................................................... 16

4.2.2.2.1 Definition......................................................................................................................................... 16

4.2.2.2.2 Limit ................................................................................................................................................ 16

4.2.2.2.3 Conformance ................................................................................................................................... 18

4.2.2.3 Receiver Compression Level ................................................................................................................ 18

4.2.2.3.1 Definition......................................................................................................................................... 18

4.2.2.3.2 Limit ................................................................................................................................................ 19

4.2.2.3.3 Conformance ................................................................................................................................... 19

5 Testing for compliance with technical requirements .............................................................................. 19

5.1 General requirements ....................................................................................................................................... 19

ETSI
---------------------- Page: 5 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
4 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)

5.2 Environmental conditions for testing ............................................................................................................... 20

5.2.1 Test Conditions ........................................................................................................................................... 20

5.2.2 Normal temperature and humidity .............................................................................................................. 20

5.2.3 Normal test power supply ........................................................................................................................... 20

5.3 Interpretation of the measurements results ....................................................................................................... 20

5.4 Radio test suites ................................................................................................................................................ 20

5.4.1 Transmitter test specification ...................................................................................................................... 20

5.4.1.1 Frequency Tolerance ............................................................................................................................. 20

5.4.1.2 Transmitter Power ................................................................................................................................. 21

5.4.1.3 Measured B Bandwidth ..................................................................................................................... 21

-40

5.4.1.4 Out-of-Band emissions .......................................................................................................................... 22

5.4.1.5 Spurious emissions ................................................................................................................................ 23

5.4.1.6 Stand-by Mode Emissions ..................................................................................................................... 24

5.4.2 Receiver Test specification ......................................................................................................................... 25

5.4.2.1 Noise Figure .......................................................................................................................................... 25

5.4.2.2 Receiver Selectivity .............................................................................................................................. 25

5.4.2.2.1 General ............................................................................................................................................ 25

5.4.2.2.2 Receiver OoB selectivity ................................................................................................................. 25

5.4.2.3 Receiver Compression .......................................................................................................................... 27

5.4.2.3.1 General ............................................................................................................................................ 27

5.4.2.3.2 Receiver Compression Level ........................................................................................................... 27

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 28

Annex B (normative): Calculation of the -40 dB Bandwidth ........................................................... 29

Annex C (normative): Operating frequency, transmitter power and OoB measurement

setup ................................................................................................................ 31

Annex D (normative): Spurious emission measurement setup ........................................................ 32

Annex E (normative): Receiver selectivity measurement setup ....................................................... 33

Annex F (informative): Maximum Measurement Uncertainty .......................................................... 34

History .............................................................................................................................................................. 35

ETSI
---------------------- Page: 6 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
5 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote

phase of the ETSI standards EN Approval Procedure.

The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated

EFTA regulations.

The present document is part 1 of a multi-part deliverable covering meteorological radar systems for different frequency

bands, as identified below:

Part 1: "S band Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz";

Part 2: "C band Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz";

Part 3: "X band Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI
---------------------- Page: 7 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
6 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 8 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
7 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
1 Scope

The present document specifies technical characteristics and methods of measurements for S-band meteorological radar

systems intended for the surveillance and classification of hydrometeors with the following characteristics:

• Operating in the following frequency range:
- 2 700 MHz to 2 900 MHz.

• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.

• The maximum output power (PEP) does not exceed 1 MW (i.e. 90 dBm).

• The transceiver antenna connection and its feeding RF line are using a hollow metallic rectangular or elliptic

waveguide.
• The antenna is rotating and can be changed in elevation.
• The antenna feed is waveguide based and the antenna is passive.

• The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be

both simultaneously.
• At the transceiver output a RF circulator is used.

NOTE 1: Since transceiver and antenna are based on hollow metallic rectangular waveguide the frequency range

for measurements that needs to be addressed covers 2 077 MHz to 14 500 MHz. The lower limit of this

frequency range is obtained as the cut-off frequency of the generally used WR284/WG10 waveguide

according to IEC 60153-2 [i.2]. The upper limit corresponds to the upper limit stated in

ERC/Recommendation 74-01, Table 1 [1]. The highest operating frequency of 2 900 MHz has been used

to calculate the upper limit.

NOTE 2: Since at the transceiver output a RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.

NOTE 3: Meteorological radar systems covered by the present document are expected to use the band 2 700 MHz

to 2 900 MHz. According to provision 5.423 of the ITU Radio Regulations [4], ground-based radars used

for meteorological purposes in the band 2 700 MHz to 2 900 MHz are authorized to operate on a basis of

equality with stations of the aeronautical radio navigation service.

NOTE 4: Further technical and operational characteristics of meteorological radar systems can be found in

Recommendation ITU-R M.1849-1 [i.3].

NOTE 5: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in Annex A.
ETSI
---------------------- Page: 9 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
8 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
2 References
2.1 Normative references

References are specific, identified by date of publication and/or edition number or version number. Only the cited

version applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ERC/Recommendation 74-01 (2011): "Unwanted emissions in the spurious domain".

[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".

[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted

emissions of radar systems".
[4] ITU Radio Regulations (2016).
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] IEC 60153-2 (Edition 2.0, 1974): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based

meteorological radars".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.
ETSI
---------------------- Page: 10 ----------------------
oSIST prEN 303 347-1 V1.1.0:2019
9 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. A generic frequency allocation table is also available in the ITU Radio Regulations [4].

assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [4].

assigned frequency band: frequency band within which the emission of a station is authorized

NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency

tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum

Doppler shift that may occur in relation to any point of the Earth's surface.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].

characteristic frequency: frequency which can be easily identified and measured in a given emission

NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.

NOTE 2: This definition is taken from the ITU Radio Regulations [4].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes

NOTE: The declared band for a given region or country is always contained within the allocated band.

frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an

emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency

NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].

idle/standby state: state where the transmitter is available for traffic but is not in the active state

necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of

information at the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from the ITU Radio Regulations [4].

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

ETSI
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oSIST prEN 303 347-1 V1.1.0:2019
10 Draft ETSI EN 303 347-1 V1.1.0 (2019-04)

out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which

results from the modulation process, but excluding spurious
NOTE: This definition is taken from the ITU Radio Regulations [4].

peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a

transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating

conditions
NOTE: This definition is taken from the ITU Radio Regulations [4].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)

pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage
...

SLOVENSKI STANDARD
oSIST prEN 303 347-1 V1.1.3:2020
01-julij-2020

Meteorološki radarji - Harmonizirani standard za dostop do radijskega spektra - 1.

del: Meteorološki radarski senzor, ki deluje v frekvenčnem pasu od 2700 MHz do
2900 MHz (pas S)

Meteorological Radars - Harmonised Standard for access to radio spectrum - Part 1:

Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz

(S band)
Ta slovenski standard je istoveten z: ETSI EN 303 347-1 V1.1.3 (2020-06)
ICS:
07.060 Geologija. Meteorologija. Geology. Meteorology.
Hidrologija Hydrology
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
oSIST prEN 303 347-1 V1.1.3:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 303 347-1 V1.1.3:2020
---------------------- Page: 2 ----------------------
oSIST prEN 303 347-1 V1.1.3:2020
Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 1: Meteorological Radar Sensor operating
in the frequency band 2 700 MHz to 2 900 MHz (S band)
---------------------- Page: 3 ----------------------
oSIST prEN 303 347-1 V1.1.3:2020
2 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
Reference
DEN/ERM-TGAERO-42-1
Keywords
harmonised standard, radar, radio
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ETSI
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oSIST prEN 303 347-1 V1.1.3:2020
3 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols ............................................................................................................................................................ 10

3.3 Abbreviations ................................................................................................................................................... 10

4 Technical requirements specifications ................................................................................................... 11

4.1 Environmental profile ....................................................................................................................................... 11

4.2 Conformance requirements .............................................................................................................................. 11

4.2.1 Transmitter requirements ............................................................................................................................ 11

4.2.1.1 Frequency Tolerance ............................................................................................................................. 11

4.2.1.1.1 Definition......................................................................................................................................... 11

4.2.1.1.2 Limits .............................................................................................................................................. 11

4.2.1.1.3 Conformance ................................................................................................................................... 11

4.2.1.2 Transmitter output power ...................................................................................................................... 11

4.2.1.2.1 Definition......................................................................................................................................... 11

4.2.1.2.2 Limits .............................................................................................................................................. 11

4.2.1.2.3 Conformance ................................................................................................................................... 11

4.2.1.3 Measured B Bandwidth ..................................................................................................................... 12

-40

4.2.1.3.1 Definition......................................................................................................................................... 12

4.2.1.3.2 Limits .............................................................................................................................................. 12

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Out-of-Band emissions .......................................................................................................................... 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 14

4.2.1.5 Spurious emissions ................................................................................................................................ 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 15

4.2.1.5.3 Conformance ................................................................................................................................... 15

4.2.1.6 Stand-by Mode emissions ..................................................................................................................... 16

4.2.1.6.1 Definition......................................................................................................................................... 16

4.2.1.6.2 Limits .............................................................................................................................................. 16

4.2.1.6.3 Conformance ................................................................................................................................... 16

4.2.2 Receiver Requirements ............................................................................................................................... 16

4.2.2.1 Noise Figure .......................................................................................................................................... 16

4.2.2.1.1 Definition......................................................................................................................................... 16

4.2.2.1.2 Limits .............................................................................................................................................. 16

4.2.2.1.3 Conformance ................................................................................................................................... 16

4.2.2.2 Receiver Selectivity .............................................................................................................................. 16

4.2.2.2.1 Definition......................................................................................................................................... 16

4.2.2.2.2 Limits .............................................................................................................................................. 16

4.2.2.2.3 Conformance ................................................................................................................................... 18

4.2.2.3 Receiver Compression Level ................................................................................................................ 18

4.2.2.3.1 Definition......................................................................................................................................... 18

4.2.2.3.2 Limit ................................................................................................................................................ 19

4.2.2.3.3 Conformance ................................................................................................................................... 19

5 Testing for compliance with technical requirements .............................................................................. 19

5.1 General requirements ....................................................................................................................................... 19

ETSI
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oSIST prEN 303 347-1 V1.1.3:2020
4 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)

5.2 Environmental conditions for testing ............................................................................................................... 20

5.2.1 Test Conditions ........................................................................................................................................... 20

5.2.2 Normal temperature and humidity .............................................................................................................. 20

5.2.3 Normal test power supply ........................................................................................................................... 20

5.3 Interpretation of the measurements results ....................................................................................................... 20

5.4 Radio test suites ................................................................................................................................................ 20

5.4.1 Transmitter test specification ...................................................................................................................... 20

5.4.1.1 Frequency Tolerance ............................................................................................................................. 20

5.4.1.2 Transmitter Power ................................................................................................................................. 21

5.4.1.3 Measured B Bandwidth ..................................................................................................................... 21

-40

5.4.1.4 Out-of-Band emissions .......................................................................................................................... 22

5.4.1.5 Spurious emissions ................................................................................................................................ 23

5.4.1.6 Stand-by Mode Emissions ..................................................................................................................... 24

5.4.2 Receiver Test specification ......................................................................................................................... 25

5.4.2.1 Noise Figure .......................................................................................................................................... 25

5.4.2.2 Receiver Selectivity .............................................................................................................................. 25

5.4.2.2.1 General ............................................................................................................................................ 25

5.4.2.2.2 Receiver unwanted Signal Selectivity ............................................................................................. 26

5.4.2.3 Receiver Compression .......................................................................................................................... 26

5.4.2.3.1 General ............................................................................................................................................ 26

5.4.2.3.2 Receiver Compression Level ........................................................................................................... 26

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 27

Annex B (normative): Calculation of the -40 dB Bandwidth ........................................................... 28

Annex C (normative): Operating frequency and transmitter power measurement setup ............ 30

Annex D (normative): Spurious and OoB emission measurement setup ........................................ 31

Annex E (normative): Receiver selectivity and compression level measurement setup ................ 32

Annex F (informative): Maximum Measurement Uncertainty .......................................................... 33

Annex G (informative): WR284/WG10 waveguide characteristics .................................................... 34

Annex H (informative): Checklist ......................................................................................................... 36

History .............................................................................................................................................................. 38

ETSI
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oSIST prEN 303 347-1 V1.1.3:2020
5 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote

phase of the ETSI standards EN Approval Procedure.

The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated

EFTA regulations.

The present document is part 1 of a multi-part deliverable covering meteorological radar systems for different frequency

bands, as identified below:

Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz

(S band)";

Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";

Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz (X band)".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI
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oSIST prEN 303 347-1 V1.1.3:2020
6 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 8 ----------------------
oSIST prEN 303 347-1 V1.1.3:2020
7 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
1 Scope

The present document specifies technical characteristics and methods of measurements for S-band meteorological radar

systems intended for the surveillance and classification of hydrometeors with the following characteristics:

• Operating in the following frequency range:
- 2 700 MHz to 2 900 MHz.

• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.

• The maximum output power (PEP) does not exceed 1 MW (i.e. 90 dBm).

• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.

• The antenna rotates and can be changed in elevation.
• The used waveguide is WR284/WG10 waveguide according to IEC 60153-2 [i.2].
• The antenna feed is waveguide based and the antenna is passive.

• The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be

both simultaneously.
• At the transceiver output an RF circulator is used.

NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.

NOTE 2: According to provision 5.423 of the ITU Radio Regulations [i.7], ground-based radars used for

meteorological purposes in the band 2 700 MHz to 2 900 MHz are authorized to operate on a basis of

equality with stations of the aeronautical radio navigation service.

NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in

Recommendation ITU-R M.1849-1 [i.3].

NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".

[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted

emissions of radar systems".
ETSI
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oSIST prEN 303 347-1 V1.1.3:2020
8 Draft ETSI EN 303 347-1 V1.1.3 (2020-06)
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based

meteorological radars".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.

[i.6] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the

production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive

2014/53/EU".
[i.7] ITU Radio Regulations (2016).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].

assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

assigned frequency band: frequency band within which the emission of a station is authorized

NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency

tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum

Doppler shift that may occur in relation to any point of the Earth's surface.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
ETSI
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oSIST prEN 303 347-1 V1.1.3:2020
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characteristic frequency: frequency which can be easily identified and measured in a given emission

NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.

NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes

NOTE: The declared band for a given region or country is always contained within the allocated band.

frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an

emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency

NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

idle/standby state: state where the transmitter is available for operation, but is not in the active state

necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of

information at the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from the ITU Radio Regulations [i.7].

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which

results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a

transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating

conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)

pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage) in seconds

receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted

interfering signal outside the B bandwidth
-40
reference frequency: frequency having a fi
...

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