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AmplifierDesignGuideDecember2003iiNoticeTheinformationcontainedinthisdocumentissubjecttochangewithoutnotice.AgilentTechnologiesmakesnowarrantyofanykindwithregardtothismaterial,including,butnotlimitedto,theimpliedwarrantiesofmerchantabilityandfitnessforaparticularpurpose.AgilentTechnologiesshallnotbeliableforerrorscontainedhereinorforincidentalorconsequentialdamagesinconnectionwiththefurnishing,performance,oruseofthismaterial.WarrantyAcopyofthespecificwarrantytermsthatapplytothissoftwareproductisavailableuponrequestfromyourAgilentTechnologiesrepresentative.RestrictedRightsLegendUse,duplicationordisclosurebytheU.S.Governmentissubjecttorestrictionsassetforthinsubparagraph(c)(1)(ii)oftheRightsinTechnicalDataandComputerSoftwareclauseatDFARS252.227-7013forDoDagencies,andsubparagraphs(c)(1)and(c)(2)oftheCommercialComputerSoftwareRestrictedRightsclauseatFAR52.227-19forotheragencies.AgilentTechnologies395PageMillRoadPaloAlto,CA94304U.S.A.Copyright©1998-2003,AgilentTechnologies.AllRightsReserved.AcknowledgmentsMentorGraphicsisatrademarkofMentorGraphicsCorporationintheU.S.andothercountries.Microsoft®,Windows®,MSWindows®,WindowsNT®,andMS-DOS®areU.S.registeredtrademarksofMicrosoftCorporation.Pentium®isaU.S.registeredtrademarkofIntelCorporation.PostScript®andAcrobat®aretrademarksofAdobeSystemsIncorporated.UNIX®isaregisteredtrademarkoftheOpenGroup.iiiContents1AmplifierQuickStartGuideUsingDesignGuides.................................................................................................1-1AccessingtheDocumentation............................................................................1-3BasicProcedures.....................................................................................................1-3SelectingtheAppropriateSimulationType...............................................................1-8DCandBiasPointSimulations...........................................................................1-8S-ParameterSimulations....................................................................................1-9NonlinearSimulations.........................................................................................1-9Tools.........................................................................................................................1-162IntroductionListofAvailableDataDisplays..................................................................................2-2ReferencesforPowerAmplifierExamples...............................................................2-93DCandBiasPointSimulationsDCandBiasPointSimulationsBJTI-VCurves,ClassAPower,Eff.,Load,Gmvs.Bias3-2DCandBiasPointSimulationsBJTOutputPower,Distortionvs.LoadR............3-4DCandBiasPointSimulationsBJTFmaxvs.Bias...............................................3-5DCandBiasPointSimulationsBJTFtvs.Bias.....................................................3-6DCandBiasPointSimulationsBJTNoiseFig.,S-Params,Gain,Stability,andCirclesvs.Bias........................................................................................................................3-7DCandBiasPointSimulationsBJTStabilityvs.Bias...........................................3-10DCandBiasPointSimulationsFETI-VCurves,ClassAPower,Eff.,Load,Gmvs.Bias3-11DCandBiasPointSimulationsFETOutputPower,Distortionvs.LoadR............3-13DCandBiasPointSimulationsFETFmaxvs.Bias..............................................3-14DCandBiasPointSimulationsFETFtvs.Bias....................................................3-15DCandBiasPointSimulationsFETNoiseFig.,S-Params,Gain,Stability,andCirclesvs.Bias........................................................................................................................3-16DCandBiasPointSimulationsFETStabilityvs.Bias...........................................3-194S-ParameterSimulationsS-ParameterSimulationsS-Params.,NoiseFig.,Gain,Stability,Circles,andGroupDelay4-2S-ParameterSimulationsFeedbackNetworkOptimizationtoAttainStability.......4-5S-ParameterSimulationsS-Params,Gain,NF,Stability,GroupDelayvs.SweptParameters.............................................................................................................4-6S-ParameterSimulationsS-Params.,Stability,andGroupDelayvs.FrequencyandInputPower.....................................................................................................................4-9iv51-ToneNonlinearSimulations1-ToneNonlinearSimulationsSpectrum,Gain,HarmonicDistortion....................5-21-ToneNonlinearSimulationsSpectrum,Gain,HarmonicDistortion(w/PAE)......5-31-ToneNonlinearSimulationsSpectrum,Gain,HarmonicDistortionvs.Power...5-51-ToneNonlinearSimulationsSpectrum,Gain,HarmonicDistortionvs.Power(w/PAE)5-71-ToneNonlinearSimulationsSpectrum,Gain,HarmonicDistortionvs.Frequency5-91-ToneNonlinearSimulationsSpectrum,Gain,HarmonicDistortionvs.Frequency(w/PAE)..................................................................................................................5-101-ToneNonlinearSimulationsSpe