圆极化移相器相移特性研究

Reseach on Phase Shift Characteristics of Circular Polarization Phase Shifter

根据铁氧体耦合波理论推导出圆极化移相器对任意极化电磁波的传输矩阵 ,在此基础上研究了椭圆极化波、线极化波、圆极化波在移相器内的传输特性。数值仿真表明用基于线极化分量的差相移检测方法测量非标准圆极化波的测量结果不仅与激励状态有关 ,还与选定的线极化方向有关。利用本文的结果可以对圆极化移相器测试系统进行误差分析 ,对于提高测量精度有一定指导意义。

In this paper, the transfer matrix of circular polarization phase shifter is derived through coupled wave theory, transfer characteristics of elliptically polarized wave, circularly polarized wave, linear polarized wave are considered. Numerical simulation shows that the results based on measure of linear polarization component is affected by the exciting status as well as the selected polarization direction. The results of this paper may be used in error analysis to measure system, and useful to improve measure accuracy.