Switch On-Resistance.pdf

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1、AnImprovedAnalysisandDesignMethodologyforRFClass-EPowerAmplifierswithFiniteDC-feedInductanceandSwitchOn-ResistanceAnandaroopChakrabarti,HarishKrishnaswamyDepartmentofElectricalEngineering,ColumbiaUniversity,NewYork,NY-10027LosslessNormalizedWaveformsAbstract—Previousanalyticaleffortstoincorpora

2、tetheimpactDCDIDoffiniteswitchON-resistanceintothedesignprocedureofClass-VDDV)/)/VDD(t(tEpoweramplifiers(PAs)haveimposedoneorbothoftheSISVso-called“Class-Eswitchingconditions”,namelyzerovoltage0π/ω02π/ω00π/ω02π/ω0iLTime(t)Time(t)iLswitching(ZVS)andzeroderivativeofvoltageatswitchingLBPF@ω0LBPF@ω0

3、(ZDVS).TheseareessentialforhighefficiencyoperationonlyinVSVStheabsenceoflosses.Inthiswork,moregeneraldesignequationsVonIXIXhavebeenderivedwithoutimpositionofeitherZVSorZDVS.Si0cos(ω0t+Ø)LoadSi0cos(ω0t+Ø)LoadTheoptimaldesignisfoundtoexhibitneitherZVSnorZDVS,0CoutRRonCoutRLoadLoadtherebyvalidatin

4、gtheanalysis.Forthefirsttime,anattempthasbeenmadetoincorporatetheinputpowerintotheanalysis,whichfacilitatesoptimizationofpower-addedefficiency(PAE).TheresultingdesignsexhibitbetterperformanceintermsofFig.1.Class-EPAwithfiniteDC-feedinductanceandnon-zeroswitchoutputpowerandPAEcomparedtoexistingdes

5、ignapproaches.on-resistanceTheanalyticalresultshavebeenverifiedthroughSpectre-RFsimulationsat5GHzin0.18mand65nmCMOS.Throughthisdesignprocedure,wefurtherdemonstratethatClass-EPAsatimposeoneorbothofthe“Class-Eswitchingconditions”,5GHzbasedonthick-oxidedevicesin0.18mCMOS,despitenamelyZVSandZDVS.

6、Itmustbeemphasizedthatthesetheirlowerspeed,outperformthosebasedon65nmCMOSconditionsareessentialforhigh-efficiencyoperationonlydevicesduetotheirhighervoltage-handlingcapability.whenlossesaresmall.InpresenceofappreciableRon,itmightI.INTRODUCTIONbebeneficialtosustainsomeZVSlossinordertoreduceconduc

7、tionloss.Inthiswork,weanalyzetheClass-EPAinTheClass-EPA[1]hasbeenthesubjectofextensivethepresenceofafiniteDC-feedinductanceandfiniteRonresearchowingtoitspotentialforhigh-efficiencyoperationwithouttheconstraintsofeitherZVSorZDVS.witharelati