General coupling matrix synthesis methods for Chebyshev filtering.doc

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General coupling matrix synthesis methods for Chebyshev filtering.doc

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General coupling matrix synthesis methods for Chebyshev filtering 导读：就爱阅读网友为您分享以下“General coupling matrix synthesis methods for Chebyshev filtering”的资讯，希望对您有所帮助，感谢您对92的支持! GeneralCouplingMatrixSynthesisMethods forChebyshevFilteringFunctions RichardJ.Cameron,SeniorMember,IEEE Abstract—Methodsarepresentedforthegenerationofthetransferpolynomials,andthenthedirectsynthesisofthecor-respondingcanonicalnetworkcouplingmatricesforChebyshev(i.e.,prescribed-equiripple)?lteringfunctionsofthemostgeneralkind.Asimplerecursiontechniqueisdescribedforthegenerationofthepolynomialsforeven-orodd-degreeChebyshev?lter-ingfunctionswithsymmetricallyorasymmetricallyprescribedtransmissionzerosand/orgroupdelayequalizationzeropairs.Themethodforthesynthesisofthecouplingmatrixforthecor-respondingsingle-ordouble-terminatednetworkisthengiven.Finally,anoveldirecttechnique,notinvolvingoptimization,forrecon?guringthematrixintoapracticalformsuitableforreal-izationwithmicrowaveresonatortechnologyisintroduced.Theseuniversalmethodswillbeusefulforthedesignofef?cienthigh-performancemicrowave?ltersinawidevarietyoftechnologiesforapplicationinspaceandterrestrialcommunicationsystems.IndexTerms—Chebyshevcharacteristics,circuitsynthesismethods,couplingmatrix,microwave?lters. I.INTRODUCTION M ICROWAVE?ltersincorporatingtheChebyshevclassof?lteringfunctionhave,formanyyears,foundfrequentapplicationwithinmicrowavespaceandterrestrialcommunicationsystems.Thegenericfeaturesofequiripple-amplitudein-bandcharacteristics,togetherwiththesharpcutoffsattheedgeofthepassbandandhighselectivity,giveanacceptablecompromisebetweenlowestsignaldegradati