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EFFICIENCYENHANCEMENTOFBASESTATIONPOWERAMPLIFIERSUSINGDOHERTYTECHNIQUEEFFICIENCYENHANCEMENTOFBASESTATIONPOWERAMPLIFIERSUSINGDOHERTYTECHNIQUEVaniViswanathanThesissubmittedtothefacultyoftheVirginiaPolytechnicInstituteandStateUniversityinpartialfulfillmentoftherequirementsforthedegreeofMasterofScienceInElectricalEngineeringCharlesW.Bostian,ChairSanjayRamanAlexQ.HuangFebruary3,2004Blacksburg,VirginiaKeywords:Dohertypoweramplifier,LDMOS,WCDMA,efficiencyenhancementCopyright2004,VaniViswanathanEFFICIENCYENHANCEMENTOFBASESTATIONPOWERAMPLIFIERSUSINGDOHERTYTECHNIQUEByVaniViswanathanABSTRACTThepoweramplifiersaretypicallythemostpower-consumingblockinwirelesscommunicationsystems.Spectrumisexpensive,andnewertechnologiesdemandtransmissionofmaximumamountofdatawit……