用保角变换结合矩量法计算均匀波导的最低截止频率

A MoM calculation of the lowest cutoff frequencies of uniform waveguides by conformal mapping

建立了一种计算波导内TE和TM波最低截止频率的新方法,该方法使用保角变换将波导截面变换为圆形区域,再使用矩量法数值计算波导中正规波形TE和TM最低截止频率,可方便地找到满足边界条件的全域基函数.

A new approach to the computation of the lowest cutoff frequencies of TE and TM models in uniform waveguides is presented, which uses the method of moment（MoM） combined with a conformal mapping. A conformal mapping is applied to transform the waveguides section onto the circle, and the lowest cutoff frequencies is calculated by the MoM. Comparisons with numerical results found in the literature validate the presented method.