A Novel Miniaturized Four-Section SIR Filter

《A Novel Miniaturized Four-Section SIR Filter》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、ANovelMiniaturizedFour-SectionSIRFilterYuLiuˈTaoYang,ZiqiangYangShaDa,LinlingGongMicrowaveCenter,SichuanHaiteHigh-techCo.,Ltd.UniversityofElectronicScienceandTechnologyofChendudu,ChinaChina,Chengdu,610054,P.R.ChinaE-mail:dashamail@tom.comE-mail:huanyu_sky@uestc.edu.cnAbstract—Anovelminia

2、turizedfour-sectionsteppedpointexhibitsashorttermination.Foranalyzingimpedanceresonators(SIR)filterispresented.Thesizeofuniversally,thefour-section/4SIRcanbemodeledastheminiaturizationSIRband-passfilter(BPF)reducestowhichisshowninFig.2.TheZn(n=1,2,3,4)andthen75%ofthesizeofconventionalh

3、airpinSIRBPFby(n=1,2,3,4)arethecharacteristicimpedancesandutilizingspaceeffectivelyandusingmulti-sectionelectricallengthsrespectivelyofeachsteptransmissionimpedancetechnology.Thesimulationshowsnovelfilterline.AndtheZin(n=1,2,3,4)istheequivalentinputcanachievenearperformancescomparedwithi

4、mpedanceofeachstep.conventionalhairpinSIRfilterbutwithsmallersize.Obviously,becauseofmoretransmissionline(3Keywords-miniaturization;band-passfilter;steppedimp-and4)added,thetotalelectriclength(t=1+2+3+4)edanceresonator;four-sectionislargerthantheoriginalelectriclength(o=1+2)ofc

5、onventionaltwo-sectionSIRwithsame1and2.I.INTRODUCTIONThereby,thecorrespondingresonancefrequencyoftislowerthanthefrequencyofo.Inthisletter,themoreInmodernwirelessandradiocommunicationsystem,added3and4isdesignedintheinnerspaceoftheminiaturizationofband-passfilter(BPF)alwaysisconventi

6、onaltwo-sectionhairpinSIRskillfully.theresearchhotspot.ComparedtouniformimpedanceTherefore,withthesameshapesize,theresonanceresonator(UIR)BPF,theSIRBPFgetmoreandmorefrequencyofnewfour-sectionhairpinSIRislower.attentionbecauseofexcellentperformancesuchascompactsize,andadjustableparasitica

7、lpass-bandetc.Recently,somefiltersbasedonnewconfigurationsofsteppedimpedanceresonators(SIR)havebeenreported[1-8].Asonetypeofthemulti-sectionSIR,tri-sectionSIRisproposed[1-3].Itwasusedforcross-coupledBPF[1],andfoldedfilter[2]etc.Comparedwithtwo-sectionSIR,thetri-sectionSIR