二维各向异性椭圆柱的电磁散射  

Scattering by a Homogeneous Anisotropic Elliptic Cylinder:Two-Dimensional Case

作　　者：毛仕春[1] 吴振森[1] 邢赞扬[1] 

机构地区：[1]西安电子科技大学理学院,陕西西安710071

出　　处：《电子学报》2010年第3期529-533,共5页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60771038)

摘　　要：分析了二维无限长均匀各向异性椭圆柱体的电磁散射特性.基于平面波谱的积分方程以及马丢函数的级数展开式,以横电型(TE)平面波为例,导出了均匀各向异性椭圆柱内场及其单位长度的雷达散射截面(RCS)的表达式.计算了部分数值并讨论了电尺寸、介电材料等影响雷达散射截面的因素.当椭圆柱体退化到各向异性圆柱时,数值与已有文献的结果吻合较好.An analytical solution to the problem of two-dimensional scattering by a homogeneous anisotropic elliptic cylinder is derived.With the aid of an integral equation based on a plane wave representation of the field and the series expansions in terms of Mathieu functions,the transmitted field of the elliptic cylinder and radar cross sections per unit length under a transverse-electric illumination are obtained.Some numerical results are presented,the effect of electric size and material of elliptic cylinders on the radar cross sections is discussed.The data are in agreement with those available as expected when the elliptic cylinder degenerates to a homogeneous anisotropic circular one.

关 键 词：电磁散射 椭圆柱体 均匀各向异性材料 马丢函数 

分 类 号：O441[理学—电磁学]