标签: dual-band

GSMDual-BandPAMICRAVEJOUOWREVIEWEDTECHNICALFEATUREITORIALBORADALRNEDAHIGHEFFICIENCY,LOWCOSTSILICONBIPOLARGSMDUAL-BANDPAMODULEAsthewirelesscommunicationbusinesscontinuestoexpand,thereisgreatdemandforreducingthecostofallpartsofthesystems,andtousesemiconductormanufacturingprocessesandcomponenttechniquesthatcanhandleveryhighvolumeproductionduringtheshortproductcyclesofmanyofthenewdevices.Foralongtime,thetransceiverblocksinmobilephoneshavebeendesignedpreferablyinbipolarsilicontechnology(RFIC),orBiCMOSifmorecomplexity(integrationlevel)isneeded.However,fortheoutputpoweramplifier(PA),III-Vbasedsemiconductordevicesarestilldominating,eitherasdiscretedevices,moderatelyintegrat……