基于AD9858的快速調(diào)諧頻綜的研制.pdf

1、西華大學(xué)碩士學(xué)位論文基于AD9858的快速調(diào)諧頻綜的研制姓名：胡賢斌申請學(xué)位級別：碩士專業(yè)：電力電子與電力傳動(dòng)指導(dǎo)教師：靳斌20070331PowerelectronicandpowerdriveGraduate：xianbinhu，Advisor：JinBinDirectDigitalFrequencySynthesis(DDS)，asanewkindoffrequencysynthesismethod，isarevolutionof

2、frequencysynthesistechnologyWiththedevelopmentofdigitalintegratedcircuitsandmicroelectronictechniques，DDSexhibitsitssuperioritiesdaybydayIthasbeenmorerecognizedasthebestmethodtogeneratesinewave，LFMandothercomplexsignals，

3、andhasbeenusedwidelyinradarsvstemModemradarnotonlygainstheinformationofpositionandspeedoftheobjectsbutalsoanalysesanddistinguishestheobjects，whichrequiresthesignalwithawidebandemittedbyradartogainthehighresolutionofdista

4、nceandothercharacteristicsofobjectsSoithasbecomeanimportantrequirementmdesigningaradarsignalgeneratorthatgeneratingradarsignalwithwidebandevenultrawidebandAD9858isanextraordinarypowerfulDDSchip，whichnotonlyhasalltheadvan

5、tagesofgeneralDDS，alsohasbroadbandandlow。spurbringingmoreconveniencesintheprocessingofthedesignThisdesignismostlyutilizingitsadvantagesanddecreasingitsdemeritsinfluenceThefirstchapterintroducesthedevelopmentoffrequencysy

6、nthesistechn0109yandDDS(DirectDigitalSynthesizer)technologyTheprinciple、configurationandthespurdistributionofDDSareintroducedinthesecondchapterThethirdchapterintroducestheprincipleofPLLTheforthchaptermostlyintroducesthec

7、hips—AD9858andC8051F020inthefifthchapter，itdemonstratesthedesignofthewholesystem，includingbandwidthandspurThesixthchapterintroducethehardwareandsoftwareproblemswhichmetinthedebugaJldtestatthesametime，theauthoralsoputsfor