Ku波段双频正交极化微带阵列天线  

Ku-band Dual-frequency Orthogonal-Polarized Microstrip Array Antenna

作　　者：李文晶[1] 梁仙灵[1] 金荣洪[1] 耿军平[1] 叶声[1] 

机构地区：[1]上海交通大学电子工程系,上海200240

出　　处：《中国电子科学研究院学报》2012年第6期607-610,共4页Journal of China Academy of Electronics and Information Technology

基　　金："973"子课题(2009CB320403);国家自然科学基金(61201058);教育部博士点基金(20090073120033);国家科技重大专项(2011ZX03001-007-03);自然科学基金创新群体(60821062);教育部留学回国人员科研启动基金(Z1027124)

摘　　要：设计了一种Ku波段双频正交极化256元微带阵列天线。该阵列天线的正交极化辐射通过共面微带线和背向探针分别进行激励,并结合阵列馈电网络的有效设计实现了宽频带、高隔离和高增益性能。仿真和实测结果表明,该阵列天线的垂直极化端口相对阻抗带宽(S11≤-10 dB)达到21.04%,覆盖频率范围10.7～13.33 GHz;水平极化端口相对阻抗带宽达到27.86%,覆盖频率范围12.4～16.37 GHz;两极化端口隔离度高于40 dB;工作带宽内天线增益达到28～30.1 dBi。A dual-frequency orthogonal-polarized 256-element microstrip array antenna is designed for Ku-band applications.The orthogonal-polarized radiations are realized through the co-planar microstrip line and probe excitations.A reasonable feeding network is designed to achieve the performance of wideband,high isolation and high gain.Simulated and Measured results show that the proposed array antenna obtains the impedance bandwidth（S11≤-10 dB） of 21.04%,covering the frequency range of 10.7～13.33 GHz and 27.86% covering the frequency range of 10.7～13.33 GHz,for the vertical and the horizontal polarization ports,respectively.The isolation between two polarization ports is higher than 40 dB and the gain varies from 28 to 30.1 dBi in the operation band.

关 键 词：宽带 双频 正交极化 微带阵列天线 

分 类 号：TN82[电子电信—信息与通信工程]