卫星导航接收机天线的简单化设计  

Simple Design for Antenna of Satellite Navigation Receiver

作　　者：张英锋[1] 吕善伟[1] 

机构地区：[1]北京航空航天大学,北京100083

出　　处：《微波学报》2009年第1期35-38,共4页Journal of Microwaves

基　　金：国家"863"计划(2006AA12A110)

摘　　要：用模式展开理论分析了卫星导航接收机常用的天线——矩形切角圆极化贴片天线的场结构、圆极化轴比和切角尺寸的关系,导出了该类型天线的内场分布、远场辐射方向图表达式,计算了圆极化轴比受切角尺寸的影响程度,并给出了归一化切角尺寸和圆极化轴比的关系曲线。L波段天线实例表明,理论计算结果和基于有限元法的HFSS软件仿真结果一致性较好,本文分析结果可用于导航接收机天线设计,简化设计过程。The mode expanding approach is used to analyze the inner field distribution, the relation between circular polarization axial ratio and perturbation segments of the square mierostrip antenna. The formulas for the inner field distribution, the radiation patterns of the antenna are presented. The effect on the circular polarization axial ratio by perturbation segments is studied and the relation curves between normalized sizes cut and circular polarization axial ratio are presented. The theoretical results of a practical antenna in the L-band agree well with those calculated by the HFSS software based on the finite element method. The method presented is simple and effective for the designing of the antennas.

关 键 词：矩形贴片天线 圆极化 腔模理论 

分 类 号：TN822[电子电信—信息与通信工程]