柱状结构中多层各向异性吸波材料的电磁分析  

Electromagnetic Scattering for Cylindrical Structures with Anisotropic Layered Absorbing Material

作　　者：吴先良[1] 

机构地区：[1]安徽大学计算机智能与信号处理教育部重点实验室,合肥230039

出　　处：《电子学报》2000年第12期128-130,127,共4页Acta Electronica Sinica

基　　金：国家自然科学基金!(No .69971 0 0 1 );安徽省教育部骨干教师基金;安徽省教委科研基金!(No .97JL0 92 )

摘　　要：通过对圆柱状结构中多层各向异性薄层吸波材料的电磁分析—柱体由金属柱芯和包围其外的多层各向同性介质材料组成 ,在各层之间和外表面涂覆各向异性薄层 .考虑各薄层的输入阻抗 ,得出曲面结构内部及表面涂覆各向异性吸波材料散射场 .根据级联矩阵和算法 ,在一定波段上进行RCS (RadarCrossSection)减缩 ,获令人满意的计算结果 .A curved structure consisting of a perfectly conducting circular cylinder coated by any number of coaxial thin anisotropic layers separated by isotropic regins of different materials is considered.Each thin anisotropic layer is represented by a sheet with an anisotropic jump impedance.The scattered field is determined via a chain matrix algorithm.An optimization procedure is developed to minimize the radar cross section over an assigned frequency band by varying the geometric and electromagnetic parameters of the structure.Numerical results bases on this design procedure are presented and discussed.

关 键 词：电波散射 柱状结构 隐射技术 各向异性吸波材料 

分 类 号：TB34[一般工业技术—材料科学与工程]