双频圆极化卫星定位系统天线设计  

Design of dual-band circular-polarization antenna for global satellite position system

作　　者：王晓辉[1] 郑宏兴[1] 

机构地区：[1]天津职业技术师范大学天线与微波技术研究所,天津300222

出　　处：《天津职业技术师范大学学报》2013年第2期5-8,共4页Journal of Tianjin University of Technology and Education

基　　金：天津市应用基础及前沿技术研究计划(12JCYBJC10500);天津职业技术师范大学科研发展基金项目(KJYB11-1)

摘　　要：为了适应全球卫星定位系统的需要,采用多层重叠的贴片结构,设计了一种双频圆极化天线。其中上层贴片为圆形,下层为矩形,利用开槽技术分别在1.618 GHz和2.49 GHz频段处实现了圆极化,并且通过在下层贴片的四条边上分别开设矩形槽达到了缩小天线尺寸的目的。同时采用单点同轴馈电,实现了良好的阻抗匹配性能。In order to meet the needs of the global satellite positioning system, a dual-band circular polarization microstrip antenna is designed by using the double-layered patch structure, in which the top layer is a circle patch and the bottom layer is a rectangular patch. By using slotting technique, circular polarization characteristic of the antenna is realized in 1.618 GHz and 2.49 GHz bands. At the same time, because thin rectangular slots are etched on the four sides of the rectangular patch, the size of the antenna is reduced. By using simple point coaxial feeding, impedance matching is achieved.

关 键 词：贴片天线 双频 圆极化 开槽 

分 类 号：TN828.5[电子电信—信息与通信工程]