Abstract: Electromagnetic scattering from a multilayered eccentric dielectric circular cylinder with multiple cylinders inside is solved by an equivalent network formed by hybrid Aggregated T-matrix Method and Generalized Scattering Matrix approach. The T-matrix of multiple cylinders is obtained by Aggregated T-matrix Method and served as the reflection matrix of the network. Every layer-boundary is represented as a generalized S-parameter matrix in which first-kind Bessel functions and second-kind Hankel functions are used as the expansion modes and Addition Theorem of cylindrical harmonics is employed to connect the S-parameters together. The cylinder's RCS of TM and TE, as well as the near field distribution are presented.

Key words: microwave equivalent network, multiple scattering, aggregated T-matrix method, generalized scattering matrix, RCS

摘要： 采用T矩阵聚合和广义散射参数矩阵的混合方法将内含多个柱体的分层偏心介质圆柱等效为一个微波网络，利用聚合T矩阵算法求得多个柱体的总体T矩阵作为网络的负载反射矩阵。介质分界面被等效为以第一类贝塞尔函数和第二类汉克尔函数作为基底的广义散射矩阵；利用柱面波加法定理完成不同坐标系间的波函数转换，从而将各层组成一个散射参数级联网络。利用这个等效网络分析了多个分层偏心介质圆柱对TM和TE波的散射截面。

关键词: 等效网络, 多重散射, 聚合T矩阵, 广义散射矩阵, 散射截面