用直线法计算TEMcell中高次模截止频率

Computation of Higher-Order Mode Cut-off Frequencies in TEM Cells Using the Method of Lines

提出用直线法计算ＴＥＭｃｅｌｌ中高次模截止频率，求出了多个ＴＥ和ＴＭ模的截止频率值。所得结果与其他方法的结果吻合，表明直线法的精度高、计算量小，是很有效的方法。

In this paper ,the method of lines is presented to calculate the higher-order mode cut-offfrequencies in symmetric TEM cells .Both TE and TM modes are considered .The results obtained by thismethod agree with those of other methods .The comparison shows that method of lines, which has the advantages of very simple numerieal procedure and of higher accuracy,is a very powerful method for ealculating the higher-order mode cut-off frequencies in the TEM cell.