tag 标签: linearization

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    Afinite-differencemethodforlinearizationinnonlinearestimationalgorithms
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    digitalpredistortionlinearizationmethodsforRFpoweramplifiers(Doctoraldissertation)TKKDissertations136Espoo2008DIGITALPREDISTORTIONLINEARIZATIONMETHODSFORRFPOWERAMPLIFIERSDoctoralDissertationIlariTeikariHelsinkiUniversityofTechnologyFacultyofElectronics,CommunicationsandAutomationDepartmentofMicroandNanosciencesTKKDissertations136Espoo2008DIGITALPREDISTORTIONLINEARIZATIONMETHODSFORRFPOWERAMPLIFIERSDoctoralDissertationIlariTeikariDissertationforthedegreeofDoctorofScienceinTechnologytobepresentedwithduepermissionoftheFacultyofElectronics,CommunicationsandAutomationforpublicexaminationanddebateinAuditoriumS4atHelsinkiUniversityofTechnology(Espoo,Finland)onthe26thofSeptember,2008,at12noon.HelsinkiUniversityofTechnologyFacultyofElectronics,Communication……
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    AlinearizationtechniqueforRFlownoiseamplifierALINEARIZATIONTECHNIQUEFORRFLOWNOISEAMPLIFIERChunyuXin,EdgarSanchez-SinencioTexasA&MUniversityDepartmentofElectricalEngineeringCollegeStation,TX77843ABSTRACTALNAlinearizationtechniquederivedfrommulti-gatedcongurationusingbipolartransistorsinCMOStechnologyisproposed.BipolartransistorisusedtoreplacetheauxiliaryMOStransistortoachievehigheroperationalspeed.Bothsingle-endedanddifferentialapplicationsareinvestigated.Simulationshowsthatthismethodiscompetitivewithalreadyreportedlownoiseampliers.For3GHzoffrequencyoperation,thesingle-endedstructureachieves+15dBmIIP3with8.9mWpowerconsumption,andthedifferentialarchitecturecanachieve+14dBmIIP3with21mWpowerconsumption.1.INTRODUCTIONLinearityisake……
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    AflexiblemethodofLUTindexingindigitalpredistortionlinearizationofRFpoweramplifiersAFLEXIBLEMETHODOFLUTINDEXINGINDIGITALPREDISTORTIONLINEARIZATIONOFRFPOWERAMPLIFIERSJavadYavandHassaniandMahmoudKamareiDepartmentofElectricalandComputerEngineeringUniversityofTehranABSTRACTAnewmethodoflookuptable(LUT)indexingforusingintheRFpoweramplifierlinearizationwithdigitalpredistortionispresented.Inthismethodthedensityoftableentriesinaspecifiedamplituderegion,isproportionaltotheaniplifiernonlinearityinthatregion.Thismethodissimple,flexible,andadaptive.SimulationresultsshowconsiderableimprovementofAdjacentChannelInterference(ACI)comparedtotheconventionalindexingwithamplitudemethod.1.41.21.-Smm0.81.INTRODUCTION0.6LinearizationofNonLinearRFPowerAmplifier(NLPA)is……