X波段宽带圆极化微带天线的设计  

Design of X-Band Broadband Circularly Polarized Microstrip Antenna

作　　者：邵晓亮[1] 邹永庆[2] 

机构地区：[1]安徽大学电子科学与技术学院,安徽合肥230039 [2]华东电子工程研究所,安徽合肥230031

出　　处：《现代电子技术》2010年第1期100-102,共3页Modern Electronics Technique

摘　　要：介绍一种新型宽带圆极化微带天线。该天线采用同轴线单点馈电,通过在圆形贴片上开C型缝的方法,实现了圆极化并展宽了阻抗带宽;采用层叠结构,使上下两层贴片谐振于相近的频率,从而显著提高了天线的轴比带宽和阻抗带宽。仿真结果显示,该新型天线工作于X波段时,3 dB轴比带宽为13.9%,VSWR<2的阻抗带宽达到35.4%。结果证明,在贴片上开C型缝是实现圆极化的有效方法。A novel single- layer single- patch broadband Circularly Polarized（CP） microstrip antenna is introduced. The antenna is fed by a single coaxial probe. It can not only creat circularly polarized but also enhance the standing wave ratio by embedding a C shape slot in the patch. The simulated results show that the 3 dB axial ratio of this patch antenna is up to 13.9 % and the 2 V standing wave ratio bandwidth（VSWR〈2） is up to 35.4%. It is demonstrated through the simulated resuites that circularly polarized can be achieved by embedding a C shape slot in the patch.

关 键 词：微带天线 圆极化 宽带 缝隙 层叠结构 

分 类 号：TN82[电子电信—信息与通信工程]