一种面向无线通信应用的宽频带圆极化天线阵-豆柴文库

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一种面向无线通信应用的宽频带圆极化天线阵
Title:WidebandCircularlyPolarizedAntennaArrayforWirelessCommunicationApplications
Abstract:
Withtheadvancementofwirelesscommunicationtechnologies,thedemandforhigh-performanceantennashasincreasedsignificantly.Widebandcircularlypolarized(CP)antennaarrayshaveemergedasapromisingsolutiontoachievereliableandefficientwirelesscommunicationlinks.ThispaperpresentsacomprehensivestudyonthedesignandperformanceevaluationofawidebandCPantennaarrayforwirelesscommunicationapplications.
Introduction:
TheneedforwidebandCPantennasstemsfromtherequirementforhighdataratesandreliablewirelesscommunicationlinksinvariousapplicationssuchassatellitecommunication,wirelesslocalareanetworks(WLANs),and5Gcommunicationsystems.CPantennasofferseveraladvantages,includingrobustnessagainstpolarizationmismatch,reducedmultipathfading,andtheabilitytomitigateinterferencefromadjacentchannels.
DesignConsiderations:
ThedesignofawidebandCPantennaarrayinvolvesseveralcriticalconsiderations.First,theselectionoftheantennaelementsiscrucial,asitdeterminestheoverallperformanceofthearray.Planarantennas,suchaspatchantennasormicrostripantennas,arewidelyusedduetotheircompactsize,easeofintegration,andgoodradiationcharacteristics.Thenextconsiderationisthefeedingnetwork,whichshouldbedesignedtoensureproperphaseandamplitudecontrolamongtheantennaelements.Varioustechniques,includingcorporatefeeding,Butlermatrix,andhybridfeedingnetworks,canbeemployedforthispurpose.
RadiationCharacteristics:
AcriticalaspectofwidebandCPantennaarraydesignisitsradiationcharacteristics,whichdeterminethecoveragearea,gain,andbeamformingcapabilities.Thearrayshouldexhibithighgain,lowside-lobelevels,andtheabilitytosteerthebeaminmultipledirections.Severalbeamformingtechniques,suchasbeamscanningandadaptivebeamforming,canbeemployedtoachievedesiredradiationpatterns.Additionally,theaxialratio(AR)bandwidth,whichdefinestherangeoffrequenciesoverwhichtheantennamaintainsCPcharacteristics,shouldbemaximized.
PerformanceEvaluation:
Toevaluatetheperfor