2Vol.5No.2April200720074RadarScienceandTechnology1,1,2,1(1.2.,230031;,230039):對于寬角掃描相控陣天線,天線單元的寬波束特性是保證相控陣天線寬角掃描的前提條件該文介紹了一種在E面和H面都具有寬波束特性的U形貼片相控陣天線單元用腔模理論分析了該天線單元,并用HFSS8.0仿真軟件對該天線單元進行了有效的優(yōu)化對加工的天線單元作了測試,結(jié)果顯示測試值與仿真值吻合較好實測波束寬度在E面和H面都達到110b,驗證了該天線單元的寬波束特性,說明其適用于二維寬角掃描相控陣天線:天線單元;寬波束;相控陣;寬角掃描;U形貼片:TN821+.8:A:1672-2337(2007)02-0157-04AWide-BeamAntennaElementforPhased-ArrayGUOLin1,ZHUXiao-san1,2,ZOUYong-qing1(1.No.38ResearchInstituteofChinaElectronicTechnologyCorporation,Hefei230031,China;2.InstituteofElectronicScienceandTechnology,AnhuiUniversity,Hefei230039,China)Abstract:Forthephasedarrayantennas,wide-beamofantennaelementisthepreconditionforwide-anglescanning.AU-shapepatchelementforphasedarrayantennaswithwide-beambothinE-andH-planesispresentedinthispaper.Theelementisanalyzedbycavitymodeltheory,optimizedbyHFSS8.0simula-tingsoftware,fabricatedandtested.Themeasuredresultsindicatedthattheelementhas110bbeamwidthbothinE-andH-planes,andthemeasuredresultsareagreedwellwithsimulationones.Thisprovesthattheelementcanbeusedforphasedarrayantennas.Keywords:antennaelement;wide-beam;phasedarrayantenna;wide-anglescanning;U-shapepatch,1,,EH[3-4],,,35%(VSWR<1.5),E,H,,110b,,[1],,([5-6]),,[2]2,:2006-04-13;:2006-09-1052158VSWR-1VSWR(1)0QU2(1),,QK120KK3.4K01-1(2)QU0r+Ph120R+tanD0E(1E-1)r-crh,145K2ba,a<0.35K00160Kb1-1K,0.35K<a<2K(3)030abP2r00160Kb1,2K<a00(1)(2)(3)2U:,y=y+b0,UBWa/b,h:tanDEr5E5z=0z=0,h,z15H,H=0,5yy=0y=yU0x5H,H=0,5yy=0xy=y,0<x<x1,U1(4)hy=y+b,E=05Hz0,Ux=0,a/2,5xx=0,H=0y5H(2.2)x=x,y<y<y1,5xx=0,H=0U01y?J=e^zJ,z,z,s,1Us508,20.02K[5]:?0e=g(r)U(z)e^(5)zT,g(r)xy,TU(z)z,:à2g(r)+k2g(r)=0TUd(z)+C2U(z)=0(6)(7)TTkU,CT,:Ck-k2,k>kT201(8)T0C-jk2TAê-k,k<kT52003:,UU5?0e5tAê=EL0(9)à#?0e,,5=-郭琳:一種寬波束相控陣天線單元20072159,?(r)=Uc(z)àf(r)+k2g(r)U(z)e^(10)4zTTTH?(r)=jXEU(z)àg(r)@e^(11)z,T,,AnsoftHFSS8.0,1E](2n+1)P2(y+b-y)Gcos1nkxcosx1n*1Kn=001(y-y),(0[x[x)LL1L2L3L4L50.240.10.140.140.030.050.0150.07s1h11g(x,y)=E](12)Gcosk(x-a/2)*2mx2mWW1W2W3W4W5s2m=00.310.20.0550.030.110.0250.02cos(2m+1)P(y-y),(x[x[a/2)12b0,U34E?(r)=E(x,y)e^=k2g(x,y)e^z(13)5TzzTH?(r)=H(x,y)e^+H(x,y)e^=yTxxyjXEàg(x,y)@e^(14)zUU,UM?=^e@n^(15)(16)szz,n^M?s,(16):Q4PvF?=1?eMs-jkrdv0r,?=-à@F?(17)H?=jà@E?XLU,,U,;,,,Agilent8719ES[7-9],4U,2.15~3.5GHz,,,U,U,,5U,,,,5:2160,1994..[3][4][M].,1991.,,.[M].:,1978.[5]GuoYX,LukKM,andLeeKF.AQuarter-WaveU-ShapedPatchAntennawithTwoUnequalArmsforWidebandandDualFrequencyOperation[J].IEEETransonAP,2002,50(8):1082-1087.[6]TongKF,LukKM,LeeKF,etal.ABroad-BandU-SlotRectangularPatchAntennaonaMicrowaveSubstrate[J].IEEETransonAntennasandPropaga-tion,2000,48(6):954-960.[7]DernerydAG.ATheoreticalInvestigationoftheRec-tangularMicro-StripAntennaElement[J].IEEETransonAntennasandPropagation,1978,26(4):532-535.[8]DearnleyRW,andBarelAlainRF.ABroad-BandTransmissionLineModelforaRectangularMicro-StripAntenna[J].IEEETransonAntennasandPropagation,1989,37(1):6-15.[9]PuesHugoF,VandeCapelleAR.AnImpedance-MatchingTechniqueforIncreasingtheBandwidthofMicrostripAntennas[J].I