摘要
讨论了任意横截面形状波导ＴＥ、ＴＭ模本征值的时域有限差分（ＦＤＴＤ）分析方法．通过对多种横截面形状波导主模和高次模截止频率的计算以及与已有结果的比较。
This paper describes the application of the finite difference time domain (FD TD) method for obtaining the eigenvalues of TE and TM modes in waveguides with arbitrary cross sections,and gives a lot of numerical examples of the cutoff frequencies of the first and higer order modes in various waveguides. The numerical results agree very well with those published in the literature,thus the accuracy and efficiency of the method are justified.
