导电平板上任意孔缝的TM波散射及传输特性分析

摘要

该文利用边界积分法分析导电平板上任意孔缝的TM波散射及传输特性.并引入了一种基于微波网络原理的连接算法以缓解计算机内存对所计算孔缝尺寸的限制.首先将孔缝内腔分为几段，用积分方程法分别计算每段的广义导纳矩阵，然后利用连接算法将各段连接起来得到整个孔缝的口径导纳矩阵，最后由广义网络原理求解孔缝的等效磁流、后向散射场以及传输系数.%This paper deals with the electromagnetic characterization of the transmission and scattering properties of a slit in a conducting plate for TM polarization. To alleviate computational constraints for the problem, a connection algorithm is developed based on microwave network theory.In this paper,the slit can be divided into sections and the generalized admittance matrix of each section can be computed by the boundary integral method. Using the connection algorithm,the aperture admittance matrix of the slit can be derived by cascading the admittance matrices of individual sections. Once the slit aperture admittance matrix is obtained,equivalent magnetic currents,the backscattered field, and the transmission coefficient are found by the generalized network principle.