横电磁波传输室的三维FDTD法分析

Three Dimensional FDTD Analysis of TEM Transmission Cells

本文运用时域有限差分（FDTD）法模拟电磁波在TEMcell（横电磁波传输室）中的传输，并对之进行了三维分析，给出了TEMcell中TEM模场的横截面分布及纵向分布；计算了TEM模与高阶模的谐振频率；分析了TEMcell的上限可用频率。此结果对横电波传输室的设计和使用具有重要意义。

Transverse electromagnetic (TEM) transmission cells are modeled and analyzed in three dimensions by using the FDTD method. The transverse electric field distribution and longitudinal variation of the electric field are given. The high order mode resonant frequencies have been calculated and the upper bound of the applicable frequencies to a TEM cell has been analyzed.