Integral equation formulations for imperfectly conducting scatterers
Integral equation formulations for imperfectly conducting scatterers
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DOI：
10.1109/tap.1985.1143560
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发表时间：
1985-02
影响因子：
5.7
通讯作者：
L. Medgyesi-Mitschang;J. Putnam
中科院分区：
文献类型：
--
作者：
L. Medgyesi-Mitschang;J. Putnam
积分方程公式用于表征非金属表面物体的电磁 (EM) 散射相互作用。表面考虑了三种不同的边界条件：即阻抗（Leontovich）、电阻片及其对偶，导磁片边界。为一般几何提出的积分方程公式专门用于旋转体，并用矩法 (MM) 求解。当前所选择的展开函数产生对称的方程组。该系统用两个具有特殊性质的伽辽金矩阵算子来表示。研究了相关完美导电散射体内部谐振处阻抗边界积分方程的解。将结果与阻抗涂层球体的 Mie 解以及阻抗涂层体的电场、磁场和组合场公式的 MM 解进行比较。
Integral equation formulations are presented for characterizing the electromagnetic (EM) scattering interaction for nonmetallic surfaced bodies. Three different boundary conditions are considered for the surfaces: namely, the impedance (Leontovich), the resistive sheet, and its dual, the magnetically conducting sheet boundary. The integral equation formulations presented for a general geometry are specialized for bodies of revolution and solved with the method of moments (MM). The current expansion functions, which are chosen, result in a symmetric system of equations. This system is expressed in terms of two Galerkin matrix operators that have special properties. The solutions of the integral equation for the impedance boundary at internal resonances of the associated perfectly conducting scatterer are examined. The results are compared with the Mie solution for impedance-coated spheres and with the MM solutions of the electric, magnetic, and combined field formulations for impedance-coated bodies.