Generalized effective impedance boundary conditions for an imhomogeneous thin layer in electromagnetic scattering

被引:15
作者
Ammari, H
He, S
机构
[1] Centre de Mathématiques Appliquées, CNRS URA 756, Ecole Polytechnique, Palaiseau Cedex
[2] Department of Electromagnetic Theory, Royal Institute of Technology, Stockholm
关键词
D O I
10.1163/156939397X01106
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Generalized effective impedance boundary conditions for an inhomogeneous thin layer coated on a perfectly conducting plane are considered. The first order and second order approximate impedance boundary conditions are derived first for a two-dimensional thin layer with TE plane wave incidence through an asymptotic expansion in power series of the thickness. Numerical results show that the second order boundary condition gives a sufficient accuracy for all incident angles. A rigorous derivation for the case of Maxwell's equations for a three-dimensional inhomogeneous thin layer is also given.
引用
收藏
页码:1197 / 1212
页数:16
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