摘要
本文以严格的Fourier变换理论为基础,推导了双正弦周期介质中TE波在正向传播时的基本方程。利用无穷矩阵法把基本方程化为齐次的线性系统,求解了上述条件下的双正弦周期介质特征值问题,导出了特征值(传播常数)和相应特征向量(场矢量)的有关数学公式。在此基础上进行了大量的数值计算,得到了双正弦周期介质中TE波的传播特性和一些不同于单正弦介质的结果。作为上述理论结果的一种应用,本文介绍了双正弦周期介质全填充的矩形波导滤波器,其双阻带频率特性与上述理论分析是符合的。
Based on the theory of F9urier Transform, the fundamental equation have been set in this paper, which governs the propagation characteristics of TE mode in the double sinusoidally perioδic medium. The mathematical formulas for computing the eigenvalues and the corresponding eigenvectors are also derived. As a result of a large amount of numerical culculation, a series of curves which represent the dispersion characteristics are available. About some physical effects are different fom the reqular ones occurring in smple sinusidally periodic media. A new kind of the filter of rectangular waveguide filling with double sinusoidally periodic dielectric s analyzed.
出处
《微波学报》
CSCD
北大核心
1989年第4期42-47,共6页
Journal of Microwaves
关键词
周期介质
波导
DTE波
毫米波
Double sinusoidally periodic dielectric. Periodic structure, Dispersion Characteristics, Space harmonic Stopband region
