ETSI TS 103 569 V1.1.1 (2020-11)

ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Study into extending the upper limit of the range of radiated emissions requirements up to 40 GHz

DTS/ERM-EMC-366

General Information

• Status: Not Published
• Technical Committee: ERM WGEMC - ERM Electromagnetic Compatibility
• Current Stage: 12 - Completion
• Due Date: 04-Nov-2020
• Completion Date: 17-Nov-2020

Standards Content (Sample)

ETSI TS 103 569 V1.1.1 (2020-11)






TECHNICAL SPECIFICATION
ElectroMagnetic Compatibility (EMC)
standard for radio equipment and services;
Study into extending the upper limit of the range of
radiated emissions requirements up to 40 GHz

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2 ETSI TS 103 569 V1.1.1 (2020-11)



Reference
DTS/ERM-EMC-366
Keywords
EMC, emission
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3 ETSI TS 103 569 V1.1.1 (2020-11)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 6
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 7
3.3 Abbreviations . 8
4 Rationale . 9
4.1 Background . 9
4.2 Risk scenarios for high frequency EMI . 9
5 Radiated emission limits . 10
5.1 Overview of existing limits . 10
5.2 Radiated emission requirements from 6 GHz to 40 GHz . 11
5.3 Frequency range of radiated measurements . 12
6 Test facilities . 13
6.1 Test site validation. 13
6.2 Ambient signal environment . 13
6.3 Test Equipment . 13
6.3.1 Measurement Receiver . 13
6.3.2 Measurement Antenna . 14
7 Test method . 14
7.1 Overview . 14
7.2 Arrangement, Configuration, Mode of Operation of the EUT . 15
7.3 Measurement distance using a FSOATS . 15
7.4 Measurement Process . 15
7.4.1 Frequency ranges . 15
7.4.2 Test methods . 15
7.4.2.1 Introduction . 15
7.4.2.2 Continuous Method, using a FSOATS . 15
7.4.2.3 Stepped Method, using a FSOATS . 16
7.4.3 Measurement process using a FSOAT S . 16
7.4.3.1 Introduction . 16
7.4.3.2 Prescan Process . 16
7.4.3.3 Formal Process . 16
7.5 Other details using a FSOATS . 17
8 Uncertainty Analysis . 17
Annex A (informative): Technical information of receiving antennas from 1 GHz to 40 GHz . 20
Annex B (informative): Limits of radiated emission above 6 GHz in other standards . 21
Annex C (informative): Supporting information . 22
C.1 Far field conditions . 22
C.2 Azimuth angle scan and movement of turntable . 22
C.3 Vertical scan step . 23
History . 26
ETSI

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4 ETSI TS 103 569 V1.1.1 (2020-11)
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 Technical Specification (TS) has been produced by ETSI Technical Committee Electromagnetic compatibility and
Radio spectrum Matters (ERM).
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.
Introduction
The present document defines requirements for radiated emissions from 6 GHz to 40 GHz. It includes limits and test
methodologies.
With the need for faster digital communications, at higher bandwidths, means that today's internet technologies have to
use Gbps (Gigabyte per second) signals in TNE (including MME, ICT and IMT equipment) to satisfy the growing
®
demand. In addition to traditional wired communication, wireless devices (radio base stations, Wi-Fi systems, NR)
also operate at, and use these higher frequencies. Hence there is need to protect the spectrum to allow efficient
communication. Consequently, the risk of wireless systems being disturbed electromagnetically by unintentional digital
noise has increased significantly over the last few years in the frequency band above 6 GHz.
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5 ETSI TS 103 569 V1.1.1 (2020-11)
1 Scope
The aim of the present document is to control unintentional radiated emissions generated by digital devices to protect
radio services operating at frequencies up to 40 GHz.
The upper frequency limit of 6 GHz for unintentional radiated electric field emissions within current ETSI EMC
standards is insufficient to protect these higher frequencies. Therefore, there is a need to develop requirements to
control higher frequency digital noise to improve EMC. Within the present document, the upper limit of the frequency
range is extended to 40 GHz and includes the following main elements:
• radiated electric field emission limits for unintentional signals;
• test site specifications;
• measurement methods;
• uncertainty analysis.
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] EN 55032 (2015 + Amendment 1:2020): "Electromagnetic compatibility of multimedia equipment
- Emission Requirements" (produced by CENELEC).
NOTE: When referencing to EN 55032, Table clause x.y, wx denotes the table and y denotes the referenced
clause by row within the table. For example table clause 2.3 is Table 2, clause (row) 3.
[2] CISPR 16-1-4 (2019): "Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites
for radiated disturbance measurements".
[3] CISPR 16-2-3 (2016 + Amendment 1:2019): "Specification for radio disturbance and immunity
measuring apparatus and methods - Part 2-3: Methods of measurement of disturbances and
immunity - Radiated disturbance measurements".
[4] ANSI C63.2 (2016): "American National Standard For Specifications of Electromagnetic
Interference and Field Strength Measuring Instrumentation in the Frequency Range 9 kHz to
40 GHz".
[5] CFR Title 47 Part 15 (2020): "Radio Frequency devices".
[6] EN 61000-4-22 (2010): "Electromagnetic compatibility (EMC) - Part 4-22: Testing and
measurement techniques - Radiated emissions and immunity measurements in fully anechoic
rooms (FARs)" (produced by CENELEC).
[7] CISPR 16-1-1 (2019): "Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus".
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6 ETSI TS 103 569 V1.1.1 (2020-11)
[8] ANSI C63.4 (2014 + Amendment 1:2017): "American National Standard For Methods of
Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment
in the Range of 9 kHz to 40 GHz".
[9] CISPR 16-1-6 (2014 + Amendment 1:2017): "Specification for radio disturbance and immunity
measuring apparatus and methods - Part 1-6: Radio disturbance and immunity measuring
apparatus - EMC antenna calibration".
[10] ETSI EN 300 386 (V2.1.1) (07-2016): "Telecommunication network equipment; ElectroMagnetic
Compatibility (EMC) requirements; Harmonised Standard covering the essential requirements of
the Directive 2014/30/EU".
[11] CISPR 16-1-5 (2016): "Specification for radio disturbance and immunity measuring apparatus and
methods -Part 1-5: Radio disturbance and immunity measuring apparatus - Antenna calibration
sites and reference test sites for 5 MHz to 18 GHz".
[12] CISPR 32 (2015 + Amendment 1:2019): "Electromagnetic compatibility of multimedia equipment
- Emission requirements".
[13] ISO/IEC 17025 (2017): "General requirements for the competence of testing and calibration
laboratories".
[14] IEC 61000-4-21 (2011): "Electromagnetic compatibility (EMC) - Part 4-21: Testing and
measurement techniques - Reverberation chamber test methods".
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] CISPR 11 (2015 + Amendment 1:2016 + Amendment 2:2019): "Industrial, scientific and medical
equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement".
[i.2] EN 55011 (2016 + Amendment A1:2017): "Industrial, scientific and medical equipment - Radio-
frequency disturbance characteristics - Limits and methods of measurement" (produced by
CENELEC).
[i.3] Recommendation ITU-T K.136 (2018): "Electromagnetic compatibility requirements for radio
telecommunication equipment".
[i.4] Recommendation ITU-T K.137 (2018): "Electromagnetic compatibility requirements and
measurement methods for wireline telecommunication network equipment".
[i.5] ICES 003 (2016 + Updated:2019): "Information Technology Equipment (Including Digital
Apparatus) - Limits and Methods of Measurement".
[i.6] CISPR 16-4-2 (2011 + Amendment 1:2014 + Amendment 2:2018): "Specification for radio
disturbance and immunity measuring apparatus and methods - Part 4-2: Uncertainties, statistics
and limit modelling - Measurement instrumentation uncertainty".
[i.7] ETSI TR 102 273-1-1 (V1.2.1) (12-2001): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Improvement on Radiated Methods of Measurement (using test site) and
evaluation of the corresponding measurement uncertainties Part 1: Uncertainties in the
measurement of mobile radio equipment characteristics; Sub-part 1: Introduction".
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[i.8] ETSI TR 102 273-1-2 (V1.2.1) (12-2001): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Improvement on Radiated Methods of Measurement (using test site) and
evaluation of the corresponding measurement uncertainties; Part 1: Uncertainties in the
measurement of mobile radio equipment characteristics; Sub-part 2: Examples and annexes".
[i.9] GB 4824 (2019): "Industrial, scientific and medical equipment - Radio frequency disturbance
characteristics - Limits and methods of measurement".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
enclosure port: physical boundary of the EUT through which electromagnetic fields may radiate
Equipment Under Test (EUT): equipment being evaluated for compliance with the present document
formal measurement: measurement used to determine compliance
NOTE: This is often the final measurement performed. It may be carried out following a pre-scan measurement.
It is the measurement recorded in the test report.
Full Anechoic Room (FAR): enclosure that has six internal surfaces which are lined with radio-frequency-energy
absorbing material (i.e. RF absorber) that attenuates electromagnetic energy in the frequency range of interest
highest internal frequency f : highest fundamental frequency generated or used within the EUT or highest frequency
x
at which it operates
NOTE: This includes frequencies which are solely used within an integrated circuit.
Hmax: maximum antenna height scanned during measurements within a FSOATS, for example 4 m
H : minimum antenna height scanned during measurements within a FSOATS
min
NOTE: Hmin is normally at 1 m.
measurement distance (d ): distance within a FSOATS is the shortest horizontal distance between an imaginary
2
circular periphery just encompassing the EUT arrangement and the calibration point of the antenna
mode of operation: set of operational states of all functions of an EUT during a test or measurement
port: physical interface through which electromagnetic energy enters or leaves the EUT
reference distance (d ): distance within a FSOATS, at which a limit is specified
1
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f the highest fundamental frequency generated or used within the EUT or highest frequency at
x
which it operates
λ the free space wavelength at the measurement frequency
θ polar angle of the antenna main beamwidth at 3 dB
3dB
NOTE: See Figure C.3.
ϕ azimuthal angle of the antenna main beamwidth at 3 dB
3dB
NOTE: See Figure C.2.
D the largest dimension of the antenna aperture
a
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w maximum horizontal dimension of the 3 dB beamwidth of the receiving on the surface plane of the
h
turntable
NOTE: See Figure C.2.
ϕ the arc angle of maximum horizontal dimension, w , on the surface plane of the turntable
h h
NOTE: See Figure C.2.
Δ maximum vertical and horizontal dimension that covers the EUT within the 3 dB beamwidth of
the receiving antenna
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
10GE 10 Gigabit Ethernet
ADAS Advanced Driver Assistance Systems
AF Antenna Factor
AI Artificial Intelligence
ANSI American National Standardization Institute
AP Access Point
AV Average
CENELEC European Committee for Electrotechnical Standardization
CFR Code of Federal Regulations
CISPR Comité International Spécial des Perturbations Radioélectriques (International Special Committee
on Radio Interference)
C-V2X Cellular Vehicle to Everything
EM Electromagnetic
EMC ElectroMagnetic Compatibility
EMI ElectroMagnetic Interference
EN European Norm
EUT Equipment Under Test
FAR Full Anechoic Room
FSOATS Free Space Open Area Test Site
G.Fast Type of Digital Subscriber Line
GPS Global Positioning System
GRP Ground Reference Plane
ICES Interference-Causing Equipment Standard
ICT Information and Communication Technology
IF Intermediate Frequency
IMT International Mobile Technology
LTE Long Term Evolution
MME Multi Media Equipment
NR New Radio
OLT Optical Line Terminal
PK Peak
RBW Resolution Bandwidth
RF Radio Frequency
RVC Reverberation Chamber
TDB To Be Defined
TNE Telecommunications Network Equipment
UE User Equipment
VSWR Voltage Standing Wave Ratio
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4 Rationale
4.1 Background
With the need for faster digital communications, and higher bandwidths, today's internet technologies have to use
Gigabit per second (Gbps) signals within TNE to satisfy the growing demand. The implications for equipment to enable
these faster digital communications include:
• High speed clocks and data on internal PCBs, processors and ASICs.
• Extensive use of high speed optical modules, placed at the periphery of the equipment, which may have
emissions at key frequencies (for example 10 GHz and 26 GHz).
• Extremely high capacity backplanes to support the numerous required interfaces, cards and the high volume of
traffic.
• Unintentional emissions at frequencies above 6 GHz.
Meanwhile, from the perspective of wireless communications, the radio technology has been developing rapidly with
AI services based on 4G LTE and 5G NR, with use cases such as the smart home, smart city and autonomous driving.
These radio services are rapidly expanding and using the higher frequency spectrum above 6 GHz.
Hence the impact of the unintentional emissions may reduce the effectiveness of the radio services.
4.2 Risk scenarios for high frequency EMI
Three typical scenarios are outlined:
• Radiation disturbance from telecommunication centres (supporting cloud web services) to radio base
station(s), Figure 1.
• Radiation disturbance from data access equipment in city streets to vehicles, UE, and radio base stations,
Figure 2.
• Radiation disturbance between electronics in the home environment, Figure 3.

Figure 1: Disturbance from telecommunication to base station system
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10 ETSI TS 103 569 V1.1.1 (2020-11)

Figure 2: Disturbance to vehicles and base stations
due to outside access equipment on the street

Figure 3: Disturbance to wireless systems in the home
5 Radiated emission limits
5.1 Overview of existing limits
CISPR, the international committee responsible for the establishing limits and methods to protect radio services, is at
the very early stages of developing radiated electric field emission limits above 6 GHz, so the current proposal uses a
combination of the requirements within the following standards to establish an interim solution:
• CFR Title 47 Part 15 [5]
• ANSI C63.2 [4]
• ANSI C63.4 [8]
• EN 55032 [1]
• ETSI EN 300 386 [10]
• CISPR 16 series [2], [3], [7], [9], [11], and [i.6]
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According to the clause §15.109 (a) of CFR Title 47 Part 15 [5] the radiated emission limits, up to 40 GHz, for the
class A and class B equipment are summarized in Table 1. Class B limits are for the protection of radio services in
residential environments and class A limits are for the protection of radio services other than residential environments.
Table 1: Requirements for radiated electric field emission, in the range 6 GHz to 40 GHz
Frequency range Test site Test distance Detector/ Class A Limit Class B Limit
(GHz) (m) RBW dB (μV/m) dB (μV/m)
FSOATS Average/
6 to 40 3 60 54
FAR 1 MHz
FSOATS Peak/
6 to 40 3 80 74
FAR 1 MHz
NOTE: The limits at exactly 6 GHz in EN 55032 [1] are identical.

Within Table 1, the class A limits are only relaxed by 6 dB compared to class B limits.
In the frequency range from 30 MHz to 1 GHz there is a 10 dB difference between class A limits and class B limits. As
the frequency increases this differential needs to increase based upon the following:
• As the frequency increases the losses due to free space increase.
• As the frequency increases the losses due to structures, walls increase.
The impact of these elements will also mean that mitigation techniques become more effective, for example moving the
offending device away from the radio receiver or the use of a barrier between the offending device and the radio
receiver.
Hence the 10 dB differential between the class A and class B limits should be used at these higher frequencies. Some
parties suggest that the 10 dB differential should be even larger. However, further analysis is required from both
practice and theoretical perspectives to support such an increase.
EN 55032 [1] is identical to CISPR 32 [12] hence if a regulatory body or manufacturer wanted to use CISPR 32 [12] as
the reference instead of EN 55032 [1] then the requirements within this publication would be equivalent.
5.2 Radiated emission requirements from 6 GHz to 40 GHz
The EUT classification (Class A or Class B) defined in EN 55032 [1] shall apply.
Radiated emission requirements defined in Table 2 shall be satisfied across the frequency range from 6 GHz up to the
highest frequency derived from Table 3.
Measurements shall be performed using both peak and average detectors unless the limit defined for use with the
average detector has been satisfied using a peak detector, in this case, no average measurement is required but the EUT
is deemed to satisfy both limits.
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12 ETSI TS 103 569 V1.1.1 (2020-11)
Table 2: Electric field radiated emission requirements, in the frequency range 6 GHz to 40 GHz
Table Frequency Test Test distance (m) Detector/ Class A Limit Class B Limit
clause range (GHz) site RBW dB (μV/m) dB (μV/m)
FSOATS Average/
2.1 6 to 40 3 64 54
FAR 1 MHz
FSOATS Peak/
2.2 6 to 40 3 84 74
FAR 1 MHz
Average/
2.3 6 to 18 RVC n/a 70 60
1 MHz
Peak/
2.4 6 to 18 RVC n/a 90 80
1 MHz
Apply Option 1 or Option 2.

Option 1: apply Table clause 2.1 and 2.2 across the frequency range from 6 GHz to the highest
frequency of measurement derived from Table 3.

Option 2: apply Table clause 2.3 and 2.4 across the frequency range from 6 GHz to the highest
frequency of measurement derived from Table 3 up to 18 GHz, whichever is the lower. Where the derived
highest frequency is greater than 18 G
...