1、東南大學(xué)碩士學(xué)位論文Y942895新型自適應(yīng)前饋線性功率放大器研究生：郭冰指導(dǎo)教師：朱曉維教授專業(yè)：電磁場(chǎng)與微波技術(shù)東南大學(xué)毫米波國(guó)家重點(diǎn)實(shí)驗(yàn)室中國(guó)南京二零零四年三月AbaractNovelAdaptiveFeedforwardLinearizationTechniqueforPowerAmplifierMSCandidate：GUOBingAdvisor：ProfZHUXiaoweiAbstractWiththerapiddevelo

2、pmentofwirelessconmlunication，therearemoreandrnorcusel‘SandtheresourceofffequencybecomesmoreandlnorcscarcerToholdmorechannels1n1imitedspectrumitisnecessarytousenewcommunicationsystemsuchasWCDMAcdma2000andTDSCDMAallofwhic

3、hhavehighspectralefficiencyandhighchiprateAllofthese3Gcommunicationsystemshaveahighercriterionforthelinearityofthe盯poweramplifierAnovelselfadaptivefeedforward1inearizationtechnologybasedonDSPispresentedwhichisusedforWCDM

4、Aand21GHzcdma20001xbasestationFirstlybothadvantagesanddisadvantagesofexistinglinearizationmethodswereinvestigatedespeciallythefeedforwardlinearizationmethodsDualpilotmethodwasusedtocontr01themainloopofthisnewfeedforwards

5、ystemAseparateDSPboardwasdesignedandimplementedtoreceivethedetecteddatafrommainpoweramplitierandtoprocesstheoptimizationalgorithmandthengiveouttherightreal—timecontrollingvoltageAlgorithmsimulationbasedonMatlabandsystems

6、imulationbasedonADSwerebothimplementedwhichguaranteedthefeasibilityofalltheschemeTheTIC5000seriesDSPandMaximA／DandD／AconverterswereusedtomakesurethehighprecisionandhighspeedInexperimentaltesttwotonesignalandmulti—carrjer

7、signalwerebothusedasinputtotestthefecdforwardlinearizedpoweramplitierTheIMD3whenusingtwo—toneinputandtheACPRwhenusingmulticarrierinputwerebothgreatlyimprovedA11theresultsshowthatthisselfadaptivefeedforward1inearizedpower