EM Scattering from a Long Dielectric Circular Cylinder
EM Scattering from a Long Dielectric Circular Cylinder
复制标题
DOI：
10.2528/pier08081106
复制
发表时间：
2008
影响因子：
6.7
通讯作者：
W. Yan;Yang Du;Hao Wu;Dawei Liu;Bae-Ian Wu
中科院分区：
文献类型：
--
作者：
W. Yan;Yang Du;Hao Wu;Dawei Liu;Bae-Ian Wu
本文提出了一种基于T矩阵方法的新的迭代方法，用于介质柱，特别是大纵横比介质柱的电磁散射问题。在这种情况下，传统的T矩阵方法就失效了.我们利用假设曲面将圆柱划分为N个相同的子圆柱，每个子圆柱的T矩阵可以直接计算。由于任意两个相邻的子柱通过分界面相接触，传统的多散射体方程方法不能直接应用。该方法考虑了子柱与边界条件之间的耦合。通过理论预测和数值模拟以及有限长介质圆柱散射的测量结果之间的一致性证明了该方法的有效性。结果表明，新的迭代方法可以推广常规T矩阵法求解大纵横比圆柱体问题。
A new iterative technique based on the T -matrix approach is proposed for the electromagnetic scattering by dielectric cylinders, in particular cylinders with large aspect ratios. For such cases the conventional T -matrix approach fails. We use hypothetic surfaces to divide a cylinder into a cluster of N identical sub-cylinder, for each the T matrix can be directly calculated. Since any two neighboring sub- cylinder are touching via the division interface, the conventional multi- scatterer equation method is not directly applicable. The coupling among sub-cylinder and boundary conditions at the interfaces are taken care of in our approach. The validity of the proposed method is demonstrated through agreement between theoretical predictions and numerical simulations as well as measurements for scattering from dielectric circular cylinders with finite length. The results clearly demonstrate that the new iterative technique can extend regular T - matrix approach to solve cylindrical cases with large aspect ratio.