用区域分裂法求解波导不连续性问题  

ANALYSIS OF WAVEGUIDE DISCONTINUITY BY THE DOMAIN DECOMPOSITION METHOD

作　　者：汪杰[1] 尹雷[1] 洪伟[1] 

机构地区：[1]东南大学毫米波国家重点实验室,江苏南京210096

出　　处：《红外与毫米波学报》2002年第2期157-160,共4页Journal of Infrared and Millimeter Waves

基　　金：国家杰出青年基金 (批准号 6962 5 10 2 )资助项目~~

摘　　要：基于区域分裂法 (DDM )结合频域有限差分 (FDFD)和波导模式展开求解矩形波导不连续性问题 .在矩形波导的规则部分用解析的方法把电磁场用波导模式展开 ,不规则部分用FDFD方法建立关于各离散点电磁场值的方程 ,各个相邻的子区域间用Depres传输条件连接 ,通过迭代得到整个区域的解 .计算了几个波导不连续性问题的散射参数 ,结果和其它方法结果吻合较好 ,证明了该算法的正确性 .The Domain Decomposition Method (DDM) in conjunction with FDFD and Modes Expansion was used to analyze the discontinuity of the rectangular recangular waveguide. In the regular part of the rectangular waveguide, the electromagnetic field was analytically developed by the waveguide modes and in the irregular part the equations of the discrete points were built by FDFD method. The Depres transmission condition was used to connect the adjacent subdomains and the whole domain's solution was achieved by the iterative procedure. Several examples of waveguide discontinuity were calculated. The agreement between the results and that from other methods verifies its accuracy.

关 键 词：区域分裂法 波导不连续性 频域有限差分 模式展开 矩形波导 散射参数 

分 类 号：TN814[电子电信—信息与通信工程]