用耦合波法对横向磁化的H面移相器的数值分析

本文从Maxwell方程出发,应用耦合波理论推导出一般情况的耦合方程组,对横向磁化的H面移相器的传播特性进行了严格的理论分折和数值计算,得到一系列数据,并绘制了“差相移-频率”的特性曲线,从而总结出这种移相器的相移与铁氧体的位置、大小,介电常数及张量导磁率参数的关系,这些曲线和理论给这类移相器的研究设计提供了依据。本文在理论分析的基础上进行了实验测试,结果表明,应用耦合波理论分析计算这类相移器要比用微扰法分析计算的更接近于实际结果。

NUMERICAL ANALYSIS ON THE H-PLANE TRANSVERSE MAGNETIZED FERRITE PHASE SHIFTER

The paper deals with the propagation characteristics of the H-plane transverse magnetized ferrite phase shifter. The coupled wave theory on waveguides is applied to calculating the amplitudes of all coupled waves. After numerical calculation a series of data of differential phase shift is obtained and the curves of the phase shift as a function of frequency are drawn. The relations between the phase shift and the ferrite parameters such as size, dielectric constant and permeability tensor are also obtained. Experiments show that the results calculated by the coupled wave theory are more close to measured results than those obtained by means of the perturbation method.