新型海事卫星天线分析与设计

一种新型海事卫星天线分析与设计

内容简介：针对海上石油钻井平台地理环境对通信天线的特殊要求，提出了一种宽频带圆极化平面天线，该天线适用于新一代Ka频段海事卫星终端。天线采用基于微扰法的矩形贴片作为辐射单元，对微扰槽位置等参数利用矩量法进行了优化，并采用耦合馈电方式来提高天线的圆极化带宽。仿真结果表明，该天线具有良好的阻抗及轴比带宽，分析了天线的辐射特性，并对比了不同的仿真结果。该天线具有结构紧凑，馈电简单、圆极化特性好、易于制作等优点。

Abstract：For at the special geographical position of offshore oil platform , a novel wideband circularly po-larized planar antenna is proposed in this paper,and this antenna could be used in the new-generation Ka-Band maritime satellite terminal device. A novel kind of rectangular patch designed with perturbation method is used as a radiation element, thus to optimize the parameters of location, length and width of the slot with MOM ( Method of Moment) , and then the coupled feeding structure is used to expand AR band-width of the antenna. The simulation result indicates that this antenna has good performance of impedance and AR bandwidth. Radiation characteristics of the antenna are analyzed and simulation data from different simulation tools are compared in this paper. The antenna is characterized by compact structure, good cir-cular polarization performance and easy fabrication.

作者：郭强,

关键词：海事卫星, 圆极化, 轴比带宽,