ITU R S 1555:2002
ITU R S 1555:2002 Aggregate Interference Levels Between Closely Spaced Dual Circularly And Dual Linearly Polarized Geostationary-satellite Networks In The Fixed-satellite Service Operating In The 6/4 Ghz Frequency Bands
Table of Contents
ANNEX1-Interferencebetweencloselyspaceddualcircularlyandduallinearlypolarizedsatellitenetworksoperating...
1Introduction
2Genericvectorequations
2.1Interferencefromcircularlypolarizedintolinearly
polarizedantennasystems
2.2Interferencefromlinearlypolarizedintocircularlypolarized
antennasystems
2.3Interferencefromlinearlypolarizedintolinearlypolarized
antennasystems
3Summaryofdownlinkanduplinkanalysisfordualpolarized
interferingsignalsofequalamplitude
3.1CPsatelliteintoLPearthstation
3.2CPearthstationintoLPsatellite
3.3LPsatelliteintoCPearthstation
3.4LPearthstationintoCPsatellite
3.5LPsatelliteintoLPearthstation
3.6LPearthstationintoLPsatellite
4Discussionoftheresults
4.1InterferencefromaCPsystemintoanLPsystem
4.2InterferencefromanLPsystemintoaCPsystem
5Conclusions
APPENDIX1TOANNEX1-Examplemeasurementdataofthecross-polar
discriminationofearthstationantennasin...
1AntennaNo.1
2AntennaNo.2
ANNEX2-Off-axiscross-polarizationofearthstationantennas
operatinginthe6/4GHzfrequencybands
1Introduction
2Summaryoftheanalysis
2.1Measurementofthephaserelationshipbetweentheco-polarized
andcross-polarizedcomponents
2.2Definitionofanearthstationradiationpatternmodel
2.3Effectofearthstationstruts
2.4Simulationandresults
2.5Offset-fedreflectorantenna
3Conclusions
APPENDIX1TOANNEX2
1Earthstationantennaradiationpatternmodel
1.1Mainreflectorandsub-reflector
1.2Mainreflectorsurfacetoleranceerrors
2Strutscattering
3Discussionofstrutscattering
4Typical6/4GHzfrequencybandexamplesincludingstrutscattering
4.1Worst-casecomparisonbetweenuplinkstrutinterferencefrom
dualLPanddualCPsystem
5Possibilityofmeasuringofthephaserelationshipbetweenthe
co-polarizedandthecross-polarizedcomponents
6Othertypesofearthstationantennas(offset-fedreflectorantennas)
ANNEX3-Interferencebetweencloselyspaceddualpolarizedsatellite
networksoperatinginthe6/4GHzfrequency...
1Scope
2Analysis
3Results
4Conclusion