Fixed Radio Systems; Point-to-Multipoint Antennas; Antennas for point-to-multipoint fixed radio systems in the 3 GHz to 11 GHz band

The present document specifies the essential electrical requirements for linear polarization, fixed beam antennas to be utilized with new Point-to-Multipoint (P-MP) systems, including central station and terminal station applications, operating in frequency bands from 3 GHz to 11 GHz. These systems use various multiple access schemes. Electronically steerable antennas and circularly polarized antennas are not considered in the present document. Only in exceptional circumstances, and after a consultation period with operators and manufacturers, the Regulatory Authority may impose the use of tighter requirements than the minimum values given in the present document, in order to maximize the use of scarce spectrum resources. For some high gain, point-to-multipoint requirements, antennas may be used having performance as per the appropriate point-to-point antenna standard. For these antennas, minimum requirements are given in EN 300 833 [8].

Fiksni radijski sistemi – Antene tipa točka-več točk – Antene za fiksne radijske sisteme tipa točka-več točk v območju od 3 GHz do 11 GHz

General Information

Status
Published
Publication Date
28-Feb-2006
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Mar-2006
Due Date
01-Mar-2006
Completion Date
01-Mar-2006

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SLOVENSKI STANDARD
SIST EN 302 085 V1.2.3:2006
01-marec-2006
)LNVQLUDGLMVNLVLVWHPL±$QWHQHWLSDWRþNDYHþWRþN±$QWHQH]DILNVQHUDGLMVNH
VLVWHPHWLSDWRþNDYHþWRþNYREPRþMXRG*+]GR*+]

Fixed Radio Systems; Point-to-Multipoint Antennas; Antennas for point-to-multipoint fixed

radio systems in the 3 GHz to 11 GHz band
Ta slovenski standard je istoveten z: EN 302 085 Version 1.2.3
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
33.120.40 Antene Aerials
SIST EN 302 085 V1.2.3:2006 en

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

---------------------- Page: 1 ----------------------
SIST EN 302 085 V1.2.3:2006
---------------------- Page: 2 ----------------------
SIST EN 302 085 V1.2.3:2006
ETSI EN 302 085 V1.2.3 (2005-09)
European Standard (Telecommunications series)
Fixed Radio Systems;
Point-to-Multipoint Antennas;
Antennas for point-to-multipoint fixed radio systems
in the 3 GHz to 11 GHz band
---------------------- Page: 3 ----------------------
SIST EN 302 085 V1.2.3:2006
2 ETSI EN 302 085 V1.2.3 (2005-09)
Reference
REN/TM-04168
Keywords
DRRS, radio, antenna, multipoint, CDMA, FDMA,
RLL, TDMA, transmission
ETSI
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Copyright Notification
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The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2005.
All rights reserved.
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ETSI
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SIST EN 302 085 V1.2.3:2006
3 ETSI EN 302 085 V1.2.3 (2005-09)
Contents

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

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

Introduction ........................................................................................................................................................5

1 Scope........................................................................................................................................................6

2 References................................................................................................................................................6

3 Definitions, symbols and abbreviations ...................................................................................................7

3.1 Definitions..........................................................................................................................................................7

3.2 Symbols..............................................................................................................................................................8

3.3 Abbreviations.....................................................................................................................................................8

4 Frequency bands.......................................................................................................................................8

5 Types and classification of antennas........................................................................................................9

5.1 Antenna types.....................................................................................................................................................9

5.2 Antenna classifications.......................................................................................................................................9

5.2.1 CS classes.....................................................................................................................................................9

5.2.2 TS classes...................................................................................................................................................10

6 Electrical characteristics.........................................................................................................................10

6.1 Terminal Station (TS) antennas........................................................................................................................10

6.1.1 TS Radiation Pattern Envelope (RPE)........................................................................................................10

6.1.1.1 Range 1 (3,0 GHz to 5,9 GHz)..............................................................................................................11

6.1.1.2 Range 2 (5,9 GHz to 8,5 GHz)..............................................................................................................13

6.1.1.3 Range 3 (8,5 GHz to 11,0 GHz)............................................................................................................14

6.1.2 TS minimum boresight gain .......................................................................................................................15

6.2 Central Station (CS) sectored single beam antennas ........................................................................................15

6.2.1 CS azimuth Radiation Pattern Envelope (RPE), sectored...........................................................................15

6.2.1.1 Class CS 1 .............................................................................................................................................16

6.2.1.2 Class CS 2 .............................................................................................................................................16

6.2.1.3 Class CS 3 .............................................................................................................................................17

6.2.2 Minimum boresight gain, sectored .............................................................................................................17

6.3 Central Station (CS) sectored multi-beam antennas.........................................................................................18

6.3.1 CS azimuth Radiation Pattern Envelope (RPE), sectored...........................................................................18

6.3.1.1 Range 1 (3 GHz to 5,9 GHz).................................................................................................................18

6.3.1.2 Class CSMB 1.......................................................................................................................................18

6.3.1.3 Class CSMB 2.......................................................................................................................................19

6.3.2 Minimum boresight gain, multi-beam ........................................................................................................20

6.4 Central Station (CS) omni-directional antennas ...............................................................................................21

6.5 Central Station (CS) omni and sectored elevation RPEs..................................................................................21

6.5.1 Symmetric elevation RPEs .........................................................................................................................21

6.5.2 Asymmetric elevation patterns ...................................................................................................................22

6.6 Polarization, Terminal (TS) and Central (CS) Stations ....................................................................................23

6.7 Radomes...........................................................................................................................................................23

7 Conformance tests..................................................................................................................................23

Annex A (informative): Antenna characteristics.................................................................................24

A.1 Mechanical characteristics.....................................................................................................................24

A.1.1 Environmental characteristics..........................................................................................................................24

A.1.2 Antenna stability..............................................................................................................................................24

A.2 Antenna input connectors.......................................................................................................................24

A.3 VSWR at the input port(s)......................................................................................................................25

A.4 Inter-port isoIation..................................................................................................................................25

ETSI
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SIST EN 302 085 V1.2.3:2006
4 ETSI EN 302 085 V1.2.3 (2005-09)

A.5 Antenna labelling...................................................................................................................................25

A.6 Passive intermodulation performance ....................................................................................................25

Annex B (informative): Bibliography...................................................................................................26

History ..............................................................................................................................................................27

ETSI
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SIST EN 302 085 V1.2.3:2006
5 ETSI EN 302 085 V1.2.3 (2005-09)
Intellectual Property Rights

IPRs essential or potentially essential to the present document 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 (http://webapp.etsi.org/IPR/home.asp).

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.
Foreword

This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Transmission

and Multiplexing (TM).

The purpose of the present document is to define the antenna performance standards necessary to ensure optimum

frequency co-ordination between the systems and/or different services by the Regulatory Authorities in the 3 GHz to

11 GHz band. These nominal frequency limits have been chosen to reflect the WRC 2000 Final Acts [6] and the

frequency plans as given in CEPT Recommendation T/R 13-02 [1] and ITU-R Recommendation F.748 [5].

Point-to-multipoint antennas, whether integrated within station equipment or not, may need to meet environmental,

mechanical and electrical characteristics not covered by the present document, in order that the systems will operate as

intended. Additional parameters and characteristics may be subject to agreement between the equipment purchaser and

the supplier; these are considered and guidance is provided in annex A.
National transposition dates
Date of latest announcement of this EN (doa): 31 December 2005
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2006
Date of withdrawal of any conflicting National Standard (dow): 30 June 2006
Introduction

The purpose of the present document is to define the requirements for antennas used in conjunction with

Point-to-MultiPoint (P-MP) systems necessary to facilitate frequency co-ordination between services in the frequency

bands 3 GHz to 11 GHz.
ETSI
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SIST EN 302 085 V1.2.3:2006
6 ETSI EN 302 085 V1.2.3 (2005-09)
1 Scope

The present document specifies the essential electrical requirements for linear polarization, fixed beam antennas to be

utilized with new Point-to-Multipoint (P-MP) systems, including central station and terminal station applications,

operating in frequency bands from 3 GHz to 11 GHz. These systems use various multiple access schemes.

Electronically steerable antennas and circularly polarized antennas are not considered in the present document.

Only in exceptional circumstances, and after a consultation period with operators and manufacturers, the Regulatory

Authority may impose the use of tighter requirements than the minimum values given in the present document, in order

to maximize the use of scarce spectrum resources.

For some high gain, point-to-multipoint requirements, antennas may be used having performance as per the appropriate

point-to-point antenna standard. For these antennas, minimum requirements are given in EN 300 833 [8].

2 References

The following documents contain provisions which, through reference in this text, constitute provisions of the present

document.

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

non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.

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

http://docbox.etsi.org/Reference.

[1] CEPT Recommendation T/R 13-02: "Preferred channel arrangements for fixed services in the

range 22.0 - 29.5 GHz".

[2] CEPT/ERC/REC 12-05: "Harmonised radio frequency channel arrangements for digital terrestrial

fixed systems operating in the band 10.0 - 10.68 GHz".

[3] CEPT/ERC/REC 14-03: "Harmonised radio frequency channel arrangements for low and medium

capacity systems in the band 3400 MHz to 3600 MHz".

[4] ITU-R Recommendation F.747: "Radio-frequency channel arrangements for fixed wireless

systems operating in the 10 GHz band".

[5] ITU-R Recommendation F.748: "Radio-frequency arrangements for systems of the fixed service

operating in the 25, 26 and 28 GHz bands".
[6] Final Acts - WRC - 2000, Istanbul.

[7] ETSI ETS 300 019-1-4: "Equipment Engineering (EE); Environmental conditions and

environmental tests for telecommunications equipment; Part 1-4: Classification of environmental

conditions; Stationary use at non-weatherprotected locations".

[8] ETSI EN 300 833: "Fixed Radio Systems; Point-to-point antennas; Antennas for point-to-point

fixed radio systems operating in the frequency band 3 GHz to 60 GHz".

[9] ETSI EN 301 126-3-2: "Fixed Radio Systems; Conformance testing; Part 3-2: Point-to-Multipoint

antennas - Definitions, general requirements and test procedures".
[10] IEC 60154-1: "Flanges for waveguides. Part 1: General requirements".

[11] IEC 60154-2: "Flanges for waveguides. Part 2: Relevant specifications for flanges for ordinary

rectangular waveguides".
ETSI
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SIST EN 302 085 V1.2.3:2006
7 ETSI EN 302 085 V1.2.3 (2005-09)

[12] IEC 60169 (part 1 and applicable subparts): "Radio-frequency connectors. Part 1: General

requirements and measuring methods".
3 Definitions, symbols and abbreviations
3.1 Definitions

For the purposes of the present document, the following terms and definitions apply:

antenna: that part of the transmitting or receiving system that is designed to transmit or receive electromagnetic

radiation
boresight: axis of the main beam in a directional antenna

Central Station (CS): base station which communicates each way with many terminal stations and, in many cases,

repeater stations

co-polar pattern: diagram representing the radiation pattern of a test antenna when the reference antenna is similarly

polarized, scaled in dBi or dB relative to the measured antenna gain

cross-polar pattern: diagram representing the radiation pattern of a test antenna when the reference antenna is

orthogonally polarized, scaled in dBi, or dB relative to the measured antenna gain

cross-polar discrimination: difference between the peak of the co-polarized main beam and the maximum

cross-polarized signal over an angle measured within a defined region

fixed beam: radiation pattern in use is fixed relative to a defined mechanical reference plane

gain: ratio of the radiation intensity in a given direction to the radiation intensity that would be obtained if the power

accepted by the antenna was radiated isotropically

Half Power BeamWidth (HPBW): angle, relative to the main beam axis, between the two directions at which the

measured co-polar pattern is 3 dB below the value on the main beam axis

inter-port isolation: ratio in dB of the power level applied to one port of a multi-port antenna to the power level

received in any other port of the same antenna as a function of frequency

isotropic radiator: hypothetical, lossless antenna having equal radiation intensity in all directions

input port(s): flange(s) or connector(s) through which access to the antenna is provided

main beam axis: direction for which the radiation intensity is a maximum
main beam: radiation lobe containing the direction of maximum radiation

mechanical tilt: fixed angular shift in elevation of the antenna main beam axis by a change to the physical mounting

Radiation Pattern Envelope (RPE): envelope within which the radiation pattern shall fit

radiation pattern: diagram relating power flux density at a constant distance from the antenna to the direction relative

to the notional antenna main beam axis. Specifically referenced in EN 302 085 to the zero degree reference direction.

radome: cover, of dielectric material, intended for protecting an antenna from the effects of its physical environment

Repeater Station (RS): radio station providing the connection via the air to both the central station and the terminal

station(s). The remote station may also provide the interfaces to the subscriber equipment, if applicable.

sector angle: declared angle of coverage in azimuth of a sectored antenna, defined as 2α in EN 302 085

Terminal Station (TS): remote (out) station which communicates with a central station

tilt: fixed, angular shift of the antenna main beam axis (boresight) in the elevation plane by either electrical, electronic

or mechanical means
ETSI
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SIST EN 302 085 V1.2.3:2006
8 ETSI EN 302 085 V1.2.3 (2005-09)
zero degree (0°°°°): declared direction as referenced to the antenna
reference direction: mechanical characteristics, used as reference for the RPE

reference beam direction: mechanical characteristics, used as reference for every beam RPE (applicable only to

multi-beam antennae)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
α Alpha (= half the sector angle)
ε reference beam direction
dBi Decibels relative to an isotropic source
0 Nominal centre frequency of declared antenna operating range
GHz GigaHertz
MHz MegaHertz
ROUND ( ) Round up or down to nearest integer
ABS( ) Absolute value of the number
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
CS Central Station
HPBW Half Power BeamWidth
P-MP Point-to-MultiPoint
PIM Passive InterModulation
RPE Radiation Pattern Envelope
RS Repeater Station
TS Terminal Station
VSWR Voltage Standing Wave Ratio
4 Frequency bands

The present document applies to a number of frequency ranges within the 3 GHz to 11 GHz frequency bands considered

within CEPT/ERC and ETSI for allocation to the fixed services. Suitable sub-bands for allocation to point-to-multipoint

use are subject to channel plans described in references CEPT/ERC/REC 12-05 [2], CEPT/ERC/REC 14-03 [3] and

ITU-R Recommendation F.747 [4].

For the purpose of the present document, the overall frequency bands 3 GHz to 11 GHz are divided into three ranges as

follows:
range 1: 3,0 GHz to 5,9 GHz;
range 2: 5,9 GHz to 8,5 GHz;
range 3: 8,5 GHz to 11,0 GHz.
ETSI
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SIST EN 302 085 V1.2.3:2006
9 ETSI EN 302 085 V1.2.3 (2005-09)
5 Types and classification of antennas
5.1 Antenna types

The present document addresses fixed beam antennas used in the Central (CS) and Terminal (TS) stations including

Repeaters (RS).

The antennas are used in a system which can generally be described as in figure 1.

TS
Exchange

CS: Central Station, which is linked to all remote stations (repeater or terminal stations) by microwave

transmission paths.
TS: Terminal Station (outstation with subscriber interfaces).

RS: Repeater Station (radio repeater outstation with or without subscriber interfaces). A RS may serve one or

more TSs.
Figure 1: General point-to-multipoint system architecture
These antennas shall be grouped into the following types:
Central and repeater stations:
• Omni-directional;
• Sectored:
- Single-beam;
- Multi-beam;
• Directional, conforming to the requirements for TS antennas.
Terminal stations: Directional.
Repeater antennas can be of either Central (CS) or Terminal (TS) station types.
5.2 Antenna classifications
5.2.1 CS classes

With respect to the azimuthal Radiation Pattern Envelope (RPE), three classes may be identified in different frequency

sub-ranges for Central Station (CS) sectored antennas (CS1,CS2,CS3) and two classes may be identified for

multi-beam antennas (CSMB1,CSMB2):
• class CS 1;
ETSI
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SIST EN 302 085 V1.2.3:2006
10 ETSI EN 302 085 V1.2.3 (2005-09)
• class CS 2;
• class CS 3;
• class CSMB1;
• class CSMB2.

These classes allow flexibility for a variety of different systems, and may be generally appropriate for low, medium and

higher density deployments respectively.

With respect to the azimuthal RPE for omni-directional CS antennas, no requirement for separate classes has been

identified.
5.2.2 TS classes

With respect to the radiation pattern envelope (RPE), a number of classes have been identified for Terminal Station

(TS) directional antennas:
• class TS 1;
• class TS 2;
• class TS 3;
• etc.

These classes allow flexibility for a variety of different systems and deployment conditions.

6 Electrical characteristics

For the purpose of the present document, an antenna is specific to Type, Class, Range, the frequency band of operation

and the mid-band gain. An antenna which employs a radome shall meet the requirements of the present document with

the radome in place.

A 0° reference direction shall be defined for each antenna. The radiation characteristics in the present document are all

referred to this 0° reference direction.
6.1 Terminal Station (TS) antennas

The RPEs and gain parameters apply for both horizontal and vertical linearly polarized antennas.

6.1.1 TS Radiation Pattern Envelope (RPE)

The co-polar and cross-polar radiation patterns for both azimuth and elevation (see figure 2) shall not exceed the RPEs

defined in the following list:
- range 1 (3,0 GHz to 5,9 GHz):
- class TS 1: table 1;
- class TS 2: table 2;
- class TS 3: table 3;
- class TS 4: table 4;
- class TS 5: table 5.
ETSI
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SIST EN 302 085 V1.2.3:2006
11 ETSI EN 302 085 V1.2.3 (2005-09)
- range 2 (5,9 GHz to 8,5 GHz):
- class TS 1: table 6;
- class TS 2: table 7;
- class TS 3: table 8.
- range 3 (8,5 GHz to 11,0 GHz):
- class TS 1: table 9;
- class TS 2: table 10;
- class TS 3: table 11;
- class TS 4: table 12.

The gain values defined are all relative to maximum, actual gain at the measured frequency.

P0 P1
co-polar x-polar
180
Angle relative to zero degree reference °
Figure 2: Normalized RPE for TS azimuth and elevation
6.1.1.1 Range 1 (3,0 GHz to 5,9 GHz)
Table 1: TS1, Range 1
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 90 0
P2 90 -10
P3 180 -10
Cross-polar Angle (°) Gain (dB)
Q0 0 -15
Q1 180 -15
ETSI
Gain relative to zero degree
reference actual gain (dB)
---------------------- Page: 13 ----------------------
SIST EN 302 085 V1.2.3:2006
12 ETSI EN 302 085 V1.2.3 (2005-09)
Table 2: TS2, Range 1
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 12 0
P2 30 -10
P3 90 -15
P4 150 -20
P5 180 -20
Cross-polar Angle (°) Gain (dB)
Q0 0 -15
Q1 90 -15
Q2 150 -20
Q3 180 -20
Table 3: TS3, Range 1
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 10 0
P2 20 -12
P3 70 -14
P4 150 -29
P5 180 -29
Cross-polar Angle (°) Gain (dB)
Q0 0 -19
Q1 90 -19
Q2 150 -25
Q3 180 -25
Table 4: TS4, Range 1
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 10 0
P2 30 -17
P3 90 -17
P4 150 -30
P5 180 -30
Cross-polar Angle (°) Gain (dB)
Q0 0 -20
Q1 90 -20
Q2 150 -30
Q3 180 -30
Table 5: TS5, Range 1
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 12 0
P2 30 -17
P3 90 -17
P4 150 -30
P5 180 -30
Cross-polar Angle (°) Gain (dB)
Q0 0 -20
Q1 90 -20
Q2 100 -25
Q3 180 -25
ETSI
---------------------- Page: 14 ----------------------
SIST EN 302 085 V1.2.3:2006
13 ETSI EN 302 085 V1.2.3 (2005-09)
6.1.1.2 Range 2 (5,9 GHz to 8,5 GHz)
Table 6: TS1, Range 2
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 9 0
P2 22 -12
P3 90 -17
P4 150 -25
P5 180 -25
Cross-polar Angle (°) Gain (dB)
Q0 0 -17
Q1 90 -17
Q2 150 -25
Q3 180 -25
Table 7: TS2, Range 2
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 8 0
P2 20 -20
P3 90 -22
P4 150 -35
P5 180 -35
Cross-polar Angle (°) Gain (dB)
Q0 0 -25
Q1 90 -25
Q2 150 -35
Q3 180 -35
Table 8: TS3, Range 2
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 9 0
P2 22 -18
P3 90 -21
P4 150 -33
P5 180 -33
Cross-polar Angle (°) Gain (dB)
Q0 0 -25
Q1 90 -25
Q2 100 -30
Q3 180 -30
ETSI
---------------------- Page: 15 ----------------------
SIST EN 302 085 V1.2.3:2006
14 ETSI EN 302 085 V1.2.3 (2005-09)
6.1.1.3 Range 3 (8,5 GHz to 11,0 GHz)
Table 9: TS1, Range 3
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 7 0
P2 15 -13
P3 90 -20
P4 130 -30
P5 180 -30
Cross-polar Angle (°) Gain (dB)
Q0 0 -20
Q1 90 -20
Q2 130 -30
Q3 180 -30
Table 10: TS2, Range 3
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 5 0
P2 15 -20
P3 90 -30
P4 130 -40
P5 180 -40
Cross-polar Angle (°) Gain (dB)
Q0 0 -30
Q1 90 -30
Q2 130 -40
Q3 180 -40
Table 11: TS3, Range 3
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 6 0
P2 15 -13
P3 90 -24
P4 150 -36
P5 180 -36
Cross-polar Angle (°) Gain (dB)
Q0 0 -28
Q1 90 -28
Q2 100 -33
Q3 180 -33
ETSI
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SIST EN 302 085 V1.2.3:2006
15 ETSI EN 302 085 V1.2.3 (2005-09)
Table 12: TS4, Range 3
Co-polar Angle (°) Gain (dB)
P0 0 0
P1 10 0
P2 30 -10
P3 90 -15
P4 150 -20
P5 180 -20
Cross-polar Angle (°) Gain (dB)
Q0 0 -12
Q1 90 -12
Q2 130 -17
Q3 180 -17
6.1.2 TS minimum boresight gain

The TS RPEs specified in tables 1 to 12 inclusive are for maximum allowed co- and cross-polar gains, relative to

boresight actual gain.

The TS antenna shall meet the minimum boresight gain described by the following expression:

- Minimum boresight gain = ROUND (0,85 f + 5) dBi;

where f is the nominal centre frequency in GHz and ROUND ( ) means rounded to the nearest integer value.

Antenna boresight (and associated gain) does not necessarily correspond to the 0° reference direction (and its associated

gain).
6.2 Central Station (CS) sectored single beam antennas
6.2.1 CS azimuth Radiation Pattern Envelope (RPE), sectored

The Central Station azimuth RPEs for sectored (i.e. not for multi-beam and not for omni-directional) antennas are

defined in the following list for sector beamwidths in the range 15° to 180°:
• class CS 1: table 13;
• class CS 2: table 14;
• cl
...

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