有限厚导电平板上任意缝隙的耦合特性分析

Analysis of coupling properties of an arbitrary slit in a thick conducting plate

利用边界积分方程法结合广义网络原理和连接算法分析了有限厚导电平板上任意二维缝隙的散射及传输特性，并以ＴＥ波为例给出了具体的分析方法和结果。该方法不仅可用于任意形状和复杂介质填充缝隙的分析，还可考虑缝所在导体板的厚度。边界积分方程和连接算法的采用，使得分析该问题所需的计算机容量大大降低，计算效率大大提高。

A method based on the boundary integral method, generalized network formulation and connection algorithm was proposed to deal with the electromagnetic characterization of the transmission and scattering of an arbitrary slit in a conducting plane.First,the slit can be divided into proper sections and the generalized admittance matrix of each section was computed by the boundary integral method.Using the connection algorithm, the interior admittance matrix of the slit can be derived by cascading the admittance matrices of individual sections.Then the slit equivalent magnetic currents,the backscattered field and the transmitted field can be obtained by the generalized network formulation.The detailed formula and computational results for TE polarization were given as an example in this paper.The method is superior because it can reflect the thickness of the conducting plane as well as deal with slits with arbitrary shape and stratified heterogeneous materials. Besides, the application of the boundary integral equation and the introduction of connection algorithm greatly alleviate computational constraints for the problem and speed the computation.