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.
出处
《现代电子技术》
2010年第1期100-102,共3页
Modern Electronics Technique
关键词
微带天线
圆极化
宽带
缝隙
层叠结构
microstrip antenna
circularly polarized
broadband
slot
stacked structure
