load_pull_xpara

1LoadPullwithX-ParametersLoadPullwithX-ParametersANewParadigmforModelingandDesignGarySimpson,CTOMauryMicrowaveMarch2009Foramoredetailedversionofthispresentation,goto•Overview–MotivationandSolution–ANewParadigmforModelingandDesign•OverviewofX-Parameters•TraditionalLargeSignalModelvsX-ParameterModel•SystemSetupandOperation•Results•QuickDemo•Summary3LoadPullwithX-ParametersMotivation•PADesignisBecomingMoreComplex–Multi-Stage,Doherty,etc–MorethanJustMatchingOneDevice•LargeSignalModelsareNeeded–Accurate–FastTurn-Around4LoadPullwithX-ParametersPriorArtSeparateDisciplines•LoadPull–DetermineMatchforaSingleDevice–VerifyLargeSignalModels•X-Parametersat50Ohms–Goodtosimulatesystemwith50Ohmblocks–ButPowerDevicesarefarfrom50Ohms–MeasurementwasnotEasy5LoadPullwithX-ParametersSolution:LoadPullwithX-ParametersInstantLargeSignalModel6LoadPullwithX-ParametersInstantLarge-SignalModel•MauryLoadPull•AgilentNVNA•SWinPNA-X•RunSweepPlan•SaveX-ParamFile•SimulateinADS7LoadPullwithX-ParametersInstantLargeSignalModelvsrcVs_lowvloadVs_highWJ_FP2189_PHDWJ_FP2189_PHD_1fundamental_1=_freq1DC_BlockDC_Block2DC_FeedDC_Feed1P_1TonePORT1Freq=RFfreqP=dbmtow(Pavs)Z=Z_sNum=1I_ProbeIsrcV_DCSRC1Vdc=8VI_ProbeIs_lowI_ProbeIloadS1P_EqnS1S[1,1]=LoadTunerZ[1]=Z0DC_BlockDC_Block1DC_FeedDC_Feed2V_DCSRC2Vdc=-1VI_ProbeIs_highX-ParameterComponentIndustryBreakthrough8LoadPullwithX-ParametersLoadPullwithLSNATimeDomain9LoadPullwithX-ParametersNVNA•“NonlinearVectorNetworkAnalyzer”•SupersetofLSNA•3-StepCalibration–VectorCal–SimilartostandardVNACal–PowerCal–Useapowermeter–PhaseCal–UseacombgeneratorasaHarmonicPhaseReference•MeasuresTime-DomainandX-Parameters–X-ParametersareUniquetoAgilentNVNA10LoadPullwithX-Parameterslinear:S-paramsX-paramsaretonon-lineardeviceslikeS-paramstolineardevices.InOutnon-linear:X-paramsInOutXInInOutOutXSInInInGroup/PresentationTitleAgilentRestrictedX-ParameterOverviewInS11LoadPullwithX-ParametersS-ParametersVNAmeasuresamplitudesandphasesofLinearsignals.Group/PresentationTitleAgilentRestricted12LoadPullwithX-ParametersX-ParametersNVNAmeasuresamplitudesandphasesofharmonicdistortionsignals.Phasesofdistortionscanbemeasured.Group/PresentationTitleAgilentRestricted13LoadPullwithX-ParametersX-ParameterSummary•Non-LinearGeneralizationofS-Parameters–S-Parametersarespecialcasewheredistortion=0•FrequencyGridIncludes:–AllHarmonics–AllIntermods–Baseband•ParametersatEachFreq•ParametersBetweenEachFreqCombination•DatacoversoneLargeSignalOperatingPoint14LoadPullwithX-ParametersTraditionalLarge-SignalModel•UseSmallSignalandDCmeasurements–FitModelParameterstoData–Time-Consuming–AccuracyLimitedinSomeRegionsofOperation–TechnologyDependent–ModelisExtrapolatedtoLargeSignal•LoadPullisAccuracyReference–LoadPullisMeasuredatActualLargeSignal15LoadPullwithX-ParametersX-ParameterLargeSignalModel•BasedonLargeSignalMeasurementsofX-ParameterData•IncludesallParasiticsuptoReferencePlane•TechnologyIndependent•HidesDesignDetailsofDevice•LoadDependentDataforPADesign16LoadPullwithX-ParametersX-ParameterLargeSignalModelOverEntireSmithChart•InthePast,theX-Parametermodelwasonlyusedatornear50Ohms•New:Load-DependentX-Parameters–Co-DevelopedbyMauryandAgilent•NewParadigmforModelingandDesign17LoadPullwithX-ParametersX-ParameterLargeSignalModelOverEntireSmithChart•CreateInstantlyfromLoadPullData•VeryAccurate–BasedonLargeSignalLoadPullMeasurement•RegionofValidity–SweepPlanRangeSelectedbyUser–SweepGamma,Power,Bias,Freq,Etc.•SimulateComplexPACircuits18LoadPullwithX-ParametersWhatisLoadPull?Measurementvs.ImpedanceTUNERTUNERΓsourceΓLoadStimulusandMeasurementDUT19LoadPullwithX-ParametersLoadPull+X-ParameterSetupPNA-XNVNA+MaurySoftwareMauryTunerMauryTunerDUTBiasSystemExclusivetoMauryAndAgilent20LoadPullwithX-ParametersLoadPulltoCircuitSimulationSequence1.CalibrateSystem,includingTuners2.CalibrateNVNAatDUTPlane3.ConnecttheDUTandMeasureSweepPlan•SweepGamma,Power,Bias,Freq,Etc.4.DragandDropX-ParamFileintoADS5.SimulateCircuit21LoadPullwithX-ParametersSystemOperation-Measurement•NVNAcontrolledbyMauryATSsoftware.•X-Paramsoptioninparameterselectiondialog•FullyautomatedmeasurementDecember11,2008Page21NVNA+LoadPullInstantLargeSignalModel22LoadPullwithX-ParametersSystemOperation-Measurement•SweepPlan•Upto7Variables•FullyAutomatedMeasurement•MeasureoverFullRangeofDeviceOperation23LoadPullwithX-ParametersSystemOperation-SimulationCopyfileintoADSprojectX-ParameterDesignKitdoestherest!December11,2008Page23NVNA+LoadPullInstantLargeSignalModel24LoadPullwithX-ParametersInstantLargeSignalModelvsrcVs_lowvloadVs_highWJ_FP2189_PHDWJ_FP2189_PHD_1fundamental_1=_freq1DC_BlockDC_Block2DC_FeedDC_Feed1P_1TonePORT1Freq=RFfreqP=dbmtow(Pavs)Z=Z_sNum=1I_ProbeIsrcV_DCSRC1Vdc=8VI_ProbeIs_lowI_ProbeIloadS1P_EqnS1S[1,1]=LoadTunerZ[1]=Z0DC_BlockDC_Block1DC_FeedDC_Feed2V_DCSRC2Vdc=-1VI_ProbeIs_highX-ParameterComponentIndustryBreakthrough25LoadPullwithX-ParametersResults–PackagedFETExtremelyAccurateAgreementPoutPAEBlue–Simulated,Red-Measured26LoadPullwithX-ParametersRes