资源描述：
《高选择性微带带通滤波器》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、1098IEEETRANSACTIONSONMICROWAVETHEORYANDTECHNIQUES,VOL.48,NO.7,JULY2000DesignofHighlySelectiveMicrostripBandpassFilterswithaSinglePairofAttenuationPolesatFiniteFrequenciesJia-ShengHong,Member,IEEE,andMichaelJ.Lancaster,Member,IEEEAbstract—Thispaperpresentsthedesignofacla
2、ssofhighlytailthedesignofhighlyselectivemicrostripbandpassfiltersthatselectivemicrostripbandpassfiltersthatconsistofmicrostripconsistofmicrostripopen-loopresonatorswithacrosscouplingopen-loopresonatorsthatexhibitasinglepairofattenuationthatexhibitasinglepairofattenuation
3、polesatfinitefrequen-polesatfinitefrequencies.Apracticaldesigntechniqueforthiscies.Apracticaldesigntechniqueforthisclassoffilters,whichclassoffiltersisintroduced,includingtablesandformulasforaccurateandfastfiltersynthesis.Twodesignexamplesofaisalsodifferentfromthatreport
4、edin[10],isintroduced,in-six-polefilterwithafractionalbandwidthof7.331%at955MHzcludingtablesandformulasforaccurateandfastfiltersynthesis.andaneight-polefilterwithafractionalbandwidthof10.359%atThedesignapproachenablesonetouseadvancedfull-waveEM985MHzaredescribed.Theoreti
5、calandexperimentalresultsaresimulatorstocompletethefilterdesign,namely,todeterminepresented.Thecompactsizeandtheexcellentperformanceofthisthephysicaldimensionsofthefilter.Twodesignexamplesofclassoffiltershavebeendemonstrated.six-andeight-polefiltersaredemonstratedtogethe
6、rwiththeo-IndexTerms—Microstripfilters,microstripresonators,mi-reticalandexperimentalresults.crowavebandpassfilters.II.FILTERCHARACTERISTICSANDCONFIGURATIONSI.INTRODUCTIONLetusconsideratransferfunctionAPIDdevelopmentofwirelesscommunicationspresentRextraordinarydemandforn
7、arrow-bandRF/microwave(1)bandpassfilterswithhighselectivityandlowinsertionloss.Onefilterwiththeseattractivecharacteristicsisthatofquasi-el-lipticfunctionresponsefilterswithapairofattenuationpolesatwhereisthefrequencyvariablethatisnormalizedtothepass-finitefrequencies[1]–
8、[2].Thecapabilityofplacingattenuationbandcutofffrequencyofalow-passprototypefilter,isaripplepolesnearth
