摘要
本文我们根据理论分析,优化设计了基于紧耦合效应的用于实现紧耦合偶极子阵列(Tightly Coupled Dipole Array,TCDA)的周期辐射单元,拥有宽角扫描和4.5:1的阻抗带宽特性。此外,我们提出了一个金属巴伦馈电结构对偶极子单元进行馈电。最后对设计的双极化天线单元进行阻抗带宽、宽角扫描特性的分析,仿真结果显示此天线VSWR小于3的情况下带宽为1.3GHz到8.8GHz,E-plane、H-plane扫描角分别达到30°和45°。
In this paper, based on the theoretical analysis, optimal design of the periodic radiating element for the Tightly Coupled Dipole Array(TCDA)based on mutual coupling effect have been given in great detail, which show a large scanning angle and a broad bandwidth over 4.5:1. Besides, we proposed a metal Balun feeding structure to feed the dipole unit cell. A prototype was simulated. Results show that a bandwidth more than 6.77:1, with VSWR<3 from 1.3GHz to 8.8GHz, was achieved. The angle of scanning ranges up to 30°in E-plane while 45°in H-plane.
引文
[1]MUNK B A,Finite Antenna Arrays and FSS[M].New York:Wiley,2003:181-213.
[2]MUNK B A,TAYLOR R,DURHAM T,et al.A low-profile broadband phased array antenna[C]//proc of Antennas and Propagation Society International Symposium.Columbus:IEEE Press,2003,2:448-451.
[3]TZNIDIS I,SERTEL K,VOLAKIS J L.Interwoven spiral array with a 10:1 bandwidth on a ground plane[J].IEEE Antennas and wireless propagation Letters,2011,10:115-118.
[4]TZANIDIS I,SERTEL K,VOLAKIS J L.Characteristic excitation taper for ultra-wideband tightly coupled antenna array[J].IEEE Trans on Antennas and propagation,2012,58(11):1777-1784.
[5]MOULDER W F,SERTEL K,VOLAKIS J L.Superstrate-enhanced ultra-wideband tightly coupled array with resistive FSS[J].IEEE Trans on Antennas and Propagation,2012,60(9):4166-4172.
[6]CHEN Y,YANG S,NIE Z.A novel wideband antenna array with tightly coupled octagonal ring elements[J].Progress In Electromagnetics Research,2012,124:55-70.
[7]J.P.Doane,K.Sertel,and J.L.Volakis,A Wideband,Wide Scanning Tightly Coupled Dipole Array With Integrated Balun(TCDA-IB),IEEE Trans.Antennas&propag,2013.vol.61,no,9,pp.4538-4548,sep.
[8]E.Magill and H.Wheeler,“Wide-angle impedance matching of a planar array antenna by a dielectric sheet,”in Antennas and propagation Society International Symposium,1965.vol.3,pp.164-169,Aug.
[9]M.Jones.J.Rawnick,A newapproach to broadband aray design using tightly coupled elements,in proc.IEEE Military Communications Conf,2007.pp.1-7,Oct.
[10]D.Cavallo,A.Neto,and G.Gerini,Pcb Slot Based Transformers To Avoid Common-Mode Resonances In Connected Arrays of Dipoles,IEEE Trans.Antennas&Propag,2010.vol.58,no.8,pp.2767-2771,Aug.
[11]D.Cavallo,et al.A 3-to-5-GHz Wideband Array of Connected Dipoles With Low Cross Polarization and Wide-Scan Capability,IEEE Trans.Antennas&Propag,2013.vol.61,no.3,pp.1148-1154,Mar.