多通带复合左右手传输线的设计与仿真

6201012JournalofCAEITVo.l5No.6Dec.2010:20100309:20100607:973(2007CB310607)张雅男1,2,邓玲玲3(1.南京邮电大学通信与信息工程学院,南京210003;2.南京信息工程大学数理学院,南京210044;3.南京邮电大学光电工程学院,南京210003):提出一种具有两组复合左右手通带的平面传输线结构与传统左手微带线相比,本结构利用连有金属折线的矩形贴片和接地板上T形DGS(defectedgroundstructures)结构形成一组新的左手通带和右手通带为了使左右手通带间禁带闭合,用梯形贴片及接地板上交趾DGS结构代替上述结构,最终实现具有两个零级谐振频率点的平面传输线结构的仿真结果与利用等效电路和BlochFloquet原理得到的理论结果及测量结构都符合较好这种新颖的具有多通带的复合左右手传输线可应用于多通带微波器件设计:多通带;复合左右手传输线;零级谐振频率点:TN713.5:A:16735692(2010)0665605DesignandSimulationoftheCompositeRight/LeftHandedTransmissionLinewithMultibandZHANGYanan1,2,DENGLingling31.CollegeofCommunicationsandInformationEngineering,NanjingUniversityofPostsandTelecommunications,Nanjing210003,China;2.CollegeofmathematicsandPhysics,NanjingUniversityofInformationScienceandTechnology,Nanjing210044,China;3.CollegeofOptoelectronicsEngineering,NanjingUniversityofPostsandTelecommunications,Nanjing210003,China)Abstract:Aplanetransmissionlinestructurewithtwopairsofcompositeright/lefthanded(CRLH)passbandsisinvestigated.Comparedwiththeconventionallefthandedtransmissionline,weusetherectangularpatcheswithmetalmeanderlinesandtheTshapeddefectedgroundstructures(TDGS)tomodeltheothertworesonatorswhichrealizethesecondleftandrighthandedbands.Inordertomakethebandgapbetweentherightandthelefthandedpassbandscloseup,weusetrapezoidpatchesanddefectedgroundstructures(DGS)withinterdigitalgapinsteadofpreviousstructuretomodelthetransmissionlinewithtwozeroorderresonantfrequencies.ThesimulationresultsareinagreementwiththemeasurementsandthetheoreticalresultsderivedbyusingtheequivalentcircuitandBlochFloquettheory.ThenovelCRLHTLswithmultibandwouldbeapplicableinthedesignsofmicrowavedevices.Keywords:multiband;compositeright/lefthandedtransmissionline(CRLHTL);zeroorderresonantfrequency01960Veselago(LHM,lefthandedmetamaterial)[1],20106:657,,,[2](backwardwave)Pendry1998~1999(Wires),[3],Pendry(SRR,splitringresonator)[4]Smith2000SmithSRRs,,[5],,,2002,C.Caloz(TL,transmissionline),[6],2007,GeorgeV,[7],GeorgeV[8],C.Caloz,,,(Zeroorderresonantfrequency),,,,,,1,,,,,,,,(CRLHTL,compositeright/lefthandedtransmissionline),12C.Caloz2002CRLHTL[6],CL,,LL,CRLR2CRLHTL2.1GeorgeV2007,3,CRLH31,LC,LC,LCZhc=jLp+1/jCi;LCYhb=jCD+1/jLDLCZvc=jLs+1/jCs;LCYvb=jCp+1/jLbLC0,0,LC,LC0,,LC,,00,Zh=Zhc+1/YhbLC,h1h2,Zh=658201060Yv=Yvb+1/ZvcLC,,v1v2,Yv=0LC,,,,3,3,245,TDGS(DefectedGroundStructure)[10]3CiLpCpLbTDGSLDCDLsCs=2.65RO4003,1mm:g=2.1mm,m=h=5.5mm,w=0.3mm,f=2.75mm,d=0.4mm,b=4mm,c=11mm,a=0.2mm,k=4.4mm,n=1mm0.25mmTDGS0.2mm0.3mml7.2mm,[11]CiLb,Lp=3.4nH,Cp=0.81pF,LD=1.6nH,CD=1.0pF,Lb=2.3nH,Ci=0.47pF,Cs=0.61pF,Ls=2.2nH2.2BlochFloquet,(1),,(2)N,d,6=1dcos-11+ZhYv2(1)=-!unwrapped(S21,N)Nd(2)6,1.65GHz~2.5GHz5.05GHz~5.7GHz,,2.85GHz~3.45GHz6.4GHz~10.05GHz,,,,37,,4,20106:6597LCDGS,LCLC,3CRLHTL3.1,CRLHTL,,,,DGSDGS[12]LC,,,,,89(4),CiLpLsCsDGSLDCD,LbCpLC2.65,1mmRO4003d=1mm,k=5mm,m=1.95mm,f=1.6mm,g=0.2mm,n=2.75mm,p=0.29mm,a=4.125mm,b=4mm,r=0.2mm0.12mme7.2mm,:Lp=1.8nH,Cp=0.85pF,LD=1.1nH,CD=0.1pF,Lb=2.0nH,Ci=0.78pF,Cs=0.61pF,Ls=2.2nH3.2(2),101010(1)(1),=0,Zh=Zhc+1/Yhb=0Yv=Yvb+1/Zvc=0,f1=2.64GHzf2=6.37GHz(10)ff1,,,(10)ff1,,,66020106f1=0,(zeroorderresonantfrequency),f2,(10),:1.35GHz~3.45GHz;:4.75GHz~10GHz10,,11,11,,,,,,,4,,,LC,TDSGLC,,,,,,TDGSDGS,,,,,,:[1]VESELAGOVG.TheElectrodynamicsofSubstanceswithSimultaneouslyNegativeValuesofand∀[J].SovPhysUsp10,1968,10(4):509514.[2]RAMOS,WHINNERYJR,VANDUZERT.FieldsandWavesinCommunicationElectronics[M].2nded.NewYork:JohnWiley&Sons,Inc,1984.[3]PENDRY,HOLDENAJ,STEWARTWJ,eta.lExtremelyLowFrequencyPlasmonsinMetallicMesostructure[J].PhysRevLett,1996,76(25):47734776.[4]PENDRYJB,HOLDENAJ,ROBBINSDJ,eta.lMagnetismfromConductorsandEnhancedNonlinearPhenomena[J].IEEETransactionsonMicrowaveTheoryandTechniques,1999,47(11):20752084.[5]SHELBYRA,SMITHDR,SCHULTZS.ExperimentalVerificationofaNegativeIndexofRefraction[J].Science,2001,292(5514):7799.[6]CALOZC,OKABEH,IWAIT,eta.lTransmissionLineApproachofLeftHanded(LH)Materials[J].AntennasandPropagation,IEEETransactions,2004,52(5):11591166.[7]ELEFTHERIADESGV.AGeneralizedNegativeRefractiveIndexTransmissionLine(NRITL)MetamaterialforDualBandandQuadBandApplications[J].IEEEMicrowaveandWirelessComponentsLetters,2007,17(6):415471.[8]STUDNIBERGM,EKEFTHERIADESGV.PhysicalImplementationofaGeneralizedNRITLMediumforQuadBandApplications[C]//Proceedingofthe37EuropeanMicrowaveConference,Munich,Germany,2007:408411.张雅男(1977-),男,辽宁丹东人,南京邮电大学电磁场与微波技术方向博士研究生南京信息工程大学数理学院讲师,研究方向为左手微带线,左手小型天线等;Emai:[e-mail]邓玲玲(1976-),女,江苏无锡人,南京邮电大学光电工程学院讲师,材料学院博士研究生,研究方向为左手材料,薄膜器件等