ETSI TR 103 896 V1.1.1 (2023-07)

Satellite Earth Stations and Systems (SES); Considerations on off-axis EIRP density mask applicability for Ka band GSO ESOMPs in relation to potential revision to ETSI EN 303 978 (V2.1.2)

DTR/SES-00463

General Information

• Status: Not Published
• Technical Committee: SES HARM - SES WG on R&TTE dir. 99/5/EC and and RED dir. 2014/53/EU
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Due Date: 27-Jul-2023
• Completion Date: 28-Jul-2023

Standards Content (Sample)

TECHNICAL REPORT
Satellite Earth Stations and Systems (SES);
Considerations on off-axis EIRP density mask applicability for
Ka band GSO ESOMPs in relation to potential revision
to ETSI EN 303 978 (V2.1.2)
2 ETSI TR 103 896 V1.1.1 (2023-07)
Reference
DTR/SES-00463
Keywords
radio parameters, satellite
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ETSI
3 ETSI TR 103 896 V1.1.1 (2023-07)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
Executive summary . 4
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols, and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 7
3.3 Abbreviations . 7
4 Applicability of off-axis EIRP density within the band in ETSI EN 303 978 . 8
4.0 General . 8
4.1 Rationale for revision of off-axis EIRP density applicability . 10
4.2 Total Gain Definition . 10
5 Total Off-Axis Gain Case Studies . 11
6 Conclusion . 16
Annex A: Bibliography . 17
Annex B: Change History . 18
History . 19

ETSI
4 ETSI TR 103 896 V1.1.1 (2023-07)
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Foreword
This Technical Report (TR) has been produced by ETSI Technical Committee Satellite Earth Stations and Systems
(SES).
Modal verbs terminology
In the present document "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.
Executive summary
The off-axis EIRP density mask included in clause 4.2.3 of ETSI EN 303 978 [i.4], which refers to COPOL and
crosspol components (and the consequential test clause 6.4 of ETSI EN 303 978 [i.4]) has not been reconsidered since
its creation in 2013. It now appears that consideration of total transmitted off axis EIRP density rather than its polarized
components would bring ETSI EN 303 978 [i.4] more in line with the masks used in ITU-R Resolution 156 [i.6] on
Earth Stations In Motion (ESIM) and Recommendation ITU-R S.524-9 [i.1]. These masks are used globally, including
in Europe for inter-satellite coordination and for the protection of the GSO arc.
ETSI
5 ETSI TR 103 896 V1.1.1 (2023-07)
Introduction
It is proposed to revise the off axis EIRP density mask which has been inserted in ETSI EN 303 978 [i.4] in 2013 and in
the subsequent versions up to V2.1.2. The present document is intended to show that considering the total transmitted
off axis EIRP rather than its polarized components is consistent with other International masks and equally suitable for
the protection of satellites on the GSO arc.
ETSI EN 303 978 [i.4] was published ten years ago in 2013. Experience acquired since then on ESOMPs has shown
that protection of the GSO arc from their off-axis transmissions using a mask for the total transmitted off axis EIRP
density is more consistent with current practices than use of the present masks which consider the polarized components
of the off-axis transmission.
ETSI
6 ETSI TR 103 896 V1.1.1 (2023-07)
1 Scope
The present document aims at studying the implications of reviewing the applicability of the mask for off-axis EIRP
density in ETSI EN 303 978 (V2.1.2) [i.9].
2 References
2.1 Normative references
Normative references are not applicable in the present document.
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] Recommendation ITU-R S.524 (May 2000): "Maximum permissible levels of off-axis e.i.r.p.
density from earth stations in geostationary-satellite orbit networks operating in the fixed-satellite
service transmitting in the 6 GHz, 13 GHz, 14 GHz and 30 GHz frequency bands".
[i.2] ETSI EN 301 459 (October 2000): "Satellite Earth Stations and Systems (SES); Harmonized EN
for Satellite Interactive Terminals (SIT) and Satellite User Terminals (SUT) transmitting towards
satellites in geostationary orbit in the 29,5 to 30,0 GHz frequency bands covering essential
requirements under article 3.2 of the R&TTE Directive".
[i.3] Recommendation ITU-R S.1594 (September 2022): "Maximum emission levels and associated
requirements of high density fixed-satellite service earth stations transmitting towards
geostationary fixed-satellite service space stations in the 30 GHz range".
[i.4] ETSI EN 303 978 (V1.1.2) (2013): "Satellite Earth Stations and Systems (SES); Harmonised
Standard for Earth Stations on Mobile Platforms (ESOMP) transmitting towards satellites in
geostationary orbit, operating in the 27,5 GHz to 30,0 GHz frequency bands covering the essential
requirements of article 3.2 of the Directive 2014/53/EU".
[i.5] Report ITU-R S.2357 (2015-06): "Technical and operational guidelines for earth stations on
mobile platforms communicating with geostationary space stations in the fixed-satellite service in
the frequency bands 19.7 20.2 GHz and 29.5-30.0 GHz".
[i.6] ITU-R Final Acts (WRC-15) (2015) Resolution 156: "Use of the frequency bands 19.7-20.2 GHz
and 29.5-30.0 GHz by earth stations in motion communicating with geostationary space stations in
the fixed-satellite service".
[i.7] FCC 47 CFR 25.138 (2014): "Licensing requirements for GSO FSS Earth Stations in the
18.3-18.8 GHz (space-to-Earth), 19.7-20.2 GHz (space-to-Earth), 28.35-28.6 GHz
(Earth-to-space), and 29.25-30.0 GHz (Earth-to-space) bands".
[i.8] ITU-R Final Acts (WRC-19) Resolution 169: "Use of the frequency bands 17.7-19.7 GHz and
27.5-29.5 GHz by earth stations in motion communicating with geostationary space stations in the
fixed-satellite service".
ETSI
7 ETSI TR 103 896 V1.1.1 (2023-07)
[i.9] ETSI EN 303 978 (V2.1.2) (2016): "Satellite Earth Stations and Systems (SES); Harmonised
Standard for Earth Stations on Mobile Platforms (ESOMP) transmitting towards satellites in
geostationary orbit, operating in the 27,5 GHz to 30,0 GHz frequency bands covering the essential
requirements of article 3.2 of the Directive 2014/53/EU".
3 Definition of terms, symbols, and abbreviations
3.1 Terms
Void.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
� �
� �,� radiation intensity of an antenna defined as the power per unit solid angle (distance independent)
���
NOTE: The subscript denotes the polarization basis (TOT = total polarization, L = left handed circular, etc.).
��,�� spherical coordinate system
� power accepted by the antenna
���
� free space impedance; namely 377 ohms for standard atmosphere
�
� radiated electric far field
�
NOTE: The subscript denotes the polarization basis (TOT = total polarization, L = left handed circular, θ is the
spherical theta-aligned polarization, x is the x-aligned or horizontal linear polarization, etc.).
� gain of the antenna
���
NOTE: The subscript denotes the polarization basis.
� radial distance away from an antenna
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AZ Azimuth
COPOL CO-POLarization gain pattern
CP Circular Polarization
EIRP Effective Isotropically Radiated Power
EIRP-SD
...