摘要
在简要概述圆极化微带天线工作原理的基础上,重点介绍了目前国内外较为先进的圆极化微带天线实现宽带的多种方法,包括微带贴片天线、缝隙天线,以及采用PBG结构的圆极化天线。这些方法分别采用单点馈电,多点馈电或多元组合实现圆极化,均有效拓展了圆极化天线的阻抗匹配带宽和圆极化轴比带宽。参考一些实例验证了这些方法的可行性,然后展望了其可能的发展趋势。
The paper first gives a simple explanation of the principle of circularly polarized microstrip antenna. Then it mainly introduces some advanced methods at home and abroad about wideband of circular polarization microstrip antennas, which including patch antenna,slot antenna and PBG contracture. In the methods,single feed, more feed and several patches consisting circular polarization are used to feed the antenna and improve the impendent or AR bands. Through experiments it confirms the validity of these methods. Finally several trends of circularly polarized microstrip antenna are discussed.
出处
《现代电子技术》
2007年第23期82-84,共3页
Modern Electronics Technique
关键词
微带天线
圆极化
缝隙天线
单点馈电
microstrip antenna
circular polarization
slot antenna
single feed