标签: 管匹

功放管匹配FreescaleSemiconductorApplicationNoteNOTE:Thetheoryinthisapplicationnoteisstillapplicable,butsomeoftheproductsreferencedmaybediscontinued.AN721Rev.1,10/2005ImpedanceMatchingNetworksAppliedtoRFPowerTransistorsBy:B.Becciolini1.INTRODUCTIONSomegraphicandnumericalmethodsofimpedancematchingwillbereviewedhere.Theexamplesgivenwillrefertohighfrequencypoweramplifiers.Althoughmatchingnetworksnormallytaketheformoffiltersandthereforearealsousefultoprovidefrequencydiscrimination,thisaspectwillonlybeconsideredasacorollaryofthematchingcircuit.Matchingisnecessaryforthebestpossibleenergytransferfromstagetostage.InRF-powertransistorstheinputimpedanceisoflowvalue,decreasingasthepowerincr……

使用ADS进行LDMOS功放管匹配仿真方法MOTOROLAFreescaleSemiconductor,Inc.SEMICONDUCTORENGINEERINGBULLETINOrderthisdocumentbyEB212/DEB212UsingDataSheetImpedancesforRFLDMOSDevicesPreparedby:DarinWagnerMotorolaSemiconductorProductsSectorINTRODUCTIONThisdocumentexplainstheformatusedbyMotorolaforpresentingLDMOSimpedanceinformationforbothsingle-endedandpush-pulldevicesonRFPowerdatasheets.Thepurposeofthisdocumentistoclarifytheuseofthisinformationintheinitialdesignofinputandoutputmatchingnetworksforthesedevices.Multiplemethodsareavailableforimpedanceextraction.Thescopeofthisdocumentdoesnotcoverdetailedextractionmethods;however,apossibleextractionmethodisexplainedhere.Whichevermethodisused,themainconcerntobeFrees……