一种平面近场测试宽带探头补偿方法.docx

一种平面近场测试宽带探头补偿方法
Title:ACompensationMethodforWidebandProbesinPlanarNear-FieldTesting
Abstract:
Planarnear-fieldtestingisawidelyadoptedtechniqueforcharacterizingtheradiationpropertiesofantennasandtheelectromagneticfielddistributionofdevices.Toaccuratelymeasuretheperformanceofantennas,itiscrucialtocompensatefortheinherentdegradationscausedbythewidebandprobesusedinthetestingsetup.Thispaperproposesacompensationmethodforwidebandprobesinplanarnear-fieldtesting,aimingtoenhancetheaccuracyandreliabilityofthemeasurementresults.
1.Introduction
Thedemandforhigh-performanceantennashasgrownsignificantlyduetothewidespreadutilizationofwirelesscommunicationsystems.Planarnear-fieldtestingtechniqueshaveemergedasareliabletoolforevaluatingantennaperformance.However,thepresenceofwidebandprobesintroducesdistortionsandinaccuraciesinthemeasurements.Toaddressthisissue,thispaperpresentsacompensationmethodthatminimizestheimpactofwidebandprobesonthemeasurementresults.
2.WidebandProbeModeling
Inthissection,thewidebandprobeusedintheplanarnear-fieldtestingsetupischaracterized.Theprobe'selectricalparameters,suchasimpedanceandradiationpattern,aredeterminedusingappropriatemeasurementtechniques.Theseparametersarecrucialfordevelopingthecompensationalgorithm.
3.CompensationAlgorithm
Thecompensationalgorithmdesignedinthismethodaimstoeliminateorminimizethedistortionsintroducedbythewidebandprobes.Thealgorithmtakesintoaccounttheprobe'simpedance,radiationpattern,andotherrelevantparameterstocomputethecompensationsneededforaccuratemeasurements.Theprocessinvolvesmodifyingtheacquirednear-fielddatatocompensatefortheprobe'sinherenteffects.
4.ExperimentalSetup
Toverifytheeffectivenessoftheproposedcompensationmethod,asetofexperimentsareconducted.Theexperimentalsetupincludesthewidebandprobes,theantennaundertest(AUT),andtheplanarnear-fieldscanner.Themeasurementtechniqueusingthecompensatedwidebandprobesiscomparedagainstconventionalmethodswithoutcompensation.
5.ResultsandDiscussion
Theresultsobtainedfromtheexperimentsde