标签: 051221

051221TUTORIALAGENERALDESIGNPROCEDUREFORBANDPASSFILTERSDERIVEDFROMLOWPASSPROTOTYPEELEMENTS:PARTIBFig.1Circuittopologiesoflowpassprototypefilters.wg0=1.00+e1(s)andpassfiltersserveavarietyoffunctionsincommunication,radarandinstrumentationsubsystems.Oftheavailabletechniquesforthedesignofbandpassfilters,thosetechniquesbaseduponthelowpasselementsofaprototypefilterhaveyieldedsuccessfulresultsinawiderangeofapplications.Thelowpassprototypeelementsarethenormalizedvaluesofthecircuitcomponentsofafilterthathavebeensynthesizedforauniquepassbandresponse,andinsomecases,auniqueout-of-bandresponse.Thelowpassprototypeelementsareavailabletothedesignerinanumberoftabulatedsources1,2,3an……