Ku波段双频正交极化微带阵列天线

Ku波段双频正交极化微带阵列天线

内容简介：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。

Abstract：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.

作者：李文晶, 梁仙灵, 金荣洪, 耿军平, 叶声,

关键词：宽带, 双频, 正交极化, 微带阵列天线,