宽带双极化偶极子天线设计  

Desigh of Dual-Polarized Dipole Antenna with Broadband

作　　者：李昕 张艳军[1] Li Xin;Zhang Yanjun(No.39 Research Institute of CETC,Xi'an 710065,China)

机构地区：[1]中国电子科技集团公司第39研究所,西安710065

出　　处：《测控与通信》2022年第2期13-16,共4页

摘　　要：本文设计了1种适用于L、S频段的宽带双极化印刷偶极子天线。该天线结构简单,易于装配,采用印刷于介质基板上的交叉偶极子实现双极化辐射。每个印刷偶极子天线由2个多边形环构成,通过在交叉偶极子内部及四周加载寄生枝节使得天线的阻抗带宽得到改善。在天线下方加载金属反射板使其获得定向辐射特性。仿真结果显示该天线在1.47~2.52GHz频带内反射系数小于-20dB,端口隔离度大于28dB。整个频带内天线的增益高于7.6dBi,且天线具有良好的定向辐射性能。A type of wideband dual-polarized printed antenna used for the S-band and L-band is presented.The antenna with simple structure is easy to assemble.The antenna uses cross dipole antennas printed on dielectric substrates to actualize dual polarization.Each dipole antenna consists of two polygon rings,and the stubs are loaded on the dipole which improves the impedance bandwidth of the antenna.Meanwhile,the metal reflector is loaded under the antenna to obtain the directional radiation characteristics.The simulation result shows that the antenna achieves an operation bandwidth of 1.47-2.52 GHz(|S11|<-20dB),and the port isolations are better than 28 dB.The antenna gains are higher than 7.6 dBi in the whole frequency band,and good directional radiation characteristics are also obtained.

关 键 词：宽带 双极化 偶极子 

分 类 号：TN8[电子电信—信息与通信工程]