[1]周后型,洪伟.介质柱二维电磁散射MoM-CG-FFT数值方案的改进[J].东南大学学报(自然科学版),2002,32(2):156-160.[doi:10.3969/j.issn.1001-0505.2002.02.002]
 Zhou Houxing,Hong Wei.Improvement of MoM-CG-FFT scheme for EM scattering from an infinite dielectric cylinder[J].Journal of Southeast University (Natural Science Edition),2002,32(2):156-160.[doi:10.3969/j.issn.1001-0505.2002.02.002]
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介质柱二维电磁散射MoM-CG-FFT数值方案的改进()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
32
期数:
2002年第2期
页码:
156-160
栏目:
电磁场与微波技术
出版日期:
2002-03-20

文章信息/Info

Title:
Improvement of MoM-CG-FFT scheme for EM scattering from an infinite dielectric cylinder
作者:
周后型 洪伟
东南大学毫米波国家重点实验室, 南京 210096
Author(s):
Zhou Houxing Hong Wei
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
关键词:
电磁散射 介质柱体 矩量法 共轭梯度法 快速傅里叶变换
Keywords:
electromagnetic scattering dielectric cylinder moment method conjugate gradient method fast Fourier transform
分类号:
TN011
DOI:
10.3969/j.issn.1001-0505.2002.02.002
摘要:
研究2种基于矩量法、共轭梯度法和快速傅里叶变换(MoM-CG-FFT)的计算二维介质柱电磁散射的数值方案.一种方案采用以极化电流为未知函数的积分方程,另一种方案采用以总电场为未知函数的积分方程.讨论了这2种方案的数值特性,指出了它们的不足之处,并提出了一种新的方案.新方案借助于包含介质柱横截面的一个矩形来产生离散网格,但离散量的代数方程组仍建立在原横截面区域上.这样能有效地利用MoM-CG-FFT来求解所考虑的电磁散射问题.文中详细地介绍了新方案的计算过程,并给出了几种结构的数值结果,这些数值结果证实了新方案的优越性.
Abstract:
Two numerical schemes for the electromagnetic scattering from an infinite dielectric cylinder based on the hybrid technique of moment method, conjugate gradient method and fast Fourier transform(MoM-CG-FFT)are investigated. One of the schemes adopts the integral equation with equivalent current as an unknown function, whereas the other uses the integral equation with total electric field as an unknown function. Characteristics of each scheme are discussed, shortcomings are pointed out and a new scheme is proposed. In the new scheme, discrete grids are generated by means of a rectangle domain in which the cross section of the dielectric cylinder is situated, but the algebraic system is set up on the cross section of the dielectric cylinder. The scattering question considered is efficiently solved by MoM-CG-FFT. The procedure of the new method is presented in detail. Numerical results are given for various structures, which demonstrate superiority of the new scheme.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家杰出青年基金资助项目(69625102).
作者简介: 周后型(1956—),男,硕士,副教授; 洪伟,男,教授,博士生导师.
更新日期/Last Update: 2002-03-20