微带天线
贴片天线
偏移量(计算机科学)
微带线
物理
定向天线
极化(电化学)
圆极化
光学
可重构天线
缝隙天线
电子工程
拓扑(电路)
计算机科学
天线(收音机)
电气工程
工程类
天线效率
电信
化学
物理化学
程序设计语言
作者
Yikai Chen,Chao‐Fu Wang
标识
DOI:10.1109/lawp.2012.2231046
摘要
Characteristic mode (CM) analysis is carried out to understand the underlying physics of two popular circularly polarized (CP) microstrip patch antennas, namely U-slot and E-shaped CP patch antennas, for achieving better performance. Modifications of these two CP antennas with optimal feed position and compact patch size are explicitly obtained through examining the CMs, modal significance, and characteristic angle. Compared to conventional designs, the two modified designs have better axial ratio (AR) and cross-polarization performance without introducing any additional design cost or complexity. It is also interesting to find that: 1) offset probe feed in CP U-slot patch antennas will provide excellent AR performance; 2) cutting off the redundant section from CP E-shaped patch antenna will yield low cross polarization and more compact configuration.
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