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电子科学与技术外文翻译班级：学号：姓名：指导教师：时间：编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第PAGE36页共NUMPAGES36页第PAGE\*MERGEFORMAT36页共NUMPAGES\*MERGEFORMAT36页Designofintegrated1.6GHz,2WtunedRFpoweramplifierAbstract：ThispaperdescribesthedesignofanintegratedtunedpoweramplifierspecifiedtooperateatInmarsatsatelliteuplinkfrequenciesfrom1626.5to1660.5MHz.ThebasictopologyoftheamplifierliesontheparalleltunedinverseclassEamplifierthatismodifiedbyplacingtheDC-blockingcapacitorintoanewpositionandbyadjustingthesizeofthecapacitortoimprovestabilitybelowthedesiredband.Further,thenewpositioningreduceslossesbetweendrainandload.Thehighcurrentsflowinginthecircuitmadeitnecessarytousewideinductorwidthandhigh-Qfingercapacitorsintheon-chipresonator.TheamplifierwasimplementedasaGalliumArsenide(GaAs)integratedcircuit(IC)thatdelivered2Wofoutputpowerwhilethedrainefficiencywasca.56%.Measurementsincludedsourceandloadpullstofurtherimprovetheperformanceoftheamplifierandtoinvestigatethestabilityatsmallinputdrivelevels.Keywords:InverseclassE•Poweramplifier.Self-oscillation•Biasnetwork1IntroductionTheusabilityoftraditionallinearamplifiersintoday’shighpowercommunicationssystemsislimitedduetotheirlowefficiency.ThisfacthasdriventheinterestofresearchtowardsmoreefficientamplifierssuchasclassE[1–3]andinverseclassE[4].Also,thedemandofhigheroutputpowermeanshigherpeakcurrentsandvoltagesinthedrainorcollectorcircuits.Thiscreateshighrequirementsforbothmaximumbreakdownvaluesofthetransistorandtothepassivecircuitryofthemonolithicmicrowaveintegratedcircuit(MMIC).TheeffectoflimitedconductivityandlimitedcapabilitytocopewithheatcanbeminimizedthroughcarefuldesignofMMIC.Further,emergingtransistortechnologiesseemtowithstandlargercurrentdensitiesandpeakvoltages[5],andtherefore,thechoiceoftechnologyisincreasinglyimportantwhendesigninghighpowerdevices.Theaimofthispaperistoshowexperiencesrelatedtothedesignofswitchinghighpowerradiofrequency(RF)amplifiers(PA)withintegratedoutputpulseshaping.Inthesecondchaptertheintrodu
