时域MEI方法在矩形导体柱散射问题中的应用  

Application of MEI Method to Scattering from Conducting Rectangular Cylinder

作　　者：杨丹[1] 廖成[1] 钟选明[1] 

机构地区：[1]西南交通大学电磁所,成都610031

出　　处：《微波学报》2003年第1期16-19,共4页Journal of Microwaves

基　　金：国家自然科学基金 ( 6 99710 2 1); 86 3强辐射重点实验室基金资助项目

摘　　要：本文用时域有限差分法 (FDTD)模拟二维矩形导体柱的电磁散射场 ,采用时域不变性测试方程 (MEI)作为吸收边界条件对该散射场进行求解。将所得计算结果与截断边界网格点采用Mur二阶吸收边界条件所得的数值结果相比较 ,两者吻合很好。结果表明使用时域MEI方法作为吸收边界条件能有效缩短截断边界与物体边界的距离 。In this paper, based on the time domain measured equation of invariance (MEI) used at the mesh boundary, the TM polarization scattering problem for a rectangular conducting cylinder has been calculated by FDTD method. The numerical results coincide well with those obtained from the second order Mur absorbing boundary condition (ABC). The numerical examples show that the time domain MEI method can be used to terminate meshes closed to the object boundary and still obtain accurate solutions.

关 键 词：矩形导体柱 散射 MEI方法 时域有限差分法 吸收边界条件 FDTD 

分 类 号：TN011[电子电信—物理电子学]