[1]周后型,洪伟,童创明.电大尺寸导带二维散射的快速矩量法解[J].东南大学学报(自然科学版),2001,31(4):6-9.[doi:10.3969/j.issn.1001-0505.2001.04.002]
 Zhou Houxing,Hong Wei,Tong Chuangming.A Fast MOM Solution for the 2D Scattering from a Conducting Strip of Electrically Large Size[J].Journal of Southeast University (Natural Science Edition),2001,31(4):6-9.[doi:10.3969/j.issn.1001-0505.2001.04.002]
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电大尺寸导带二维散射的快速矩量法解()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
31
期数:
2001年第4期
页码:
6-9
栏目:
电磁场与微波技术
出版日期:
2001-07-20

文章信息/Info

Title:
A Fast MOM Solution for the 2D Scattering from a Conducting Strip of Electrically Large Size
作者:
周后型 洪伟 童创明
东南大学毫米波国家重点实验室, 南京 210096
Author(s):
Zhou Houxing Hong Wei Tong Chuangming
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China)
关键词:
导带 散射 预条件共轭梯度法 快速傅里叶变换
Keywords:
strip scattering preconditioned conjugate gradient method fast Fourier transform
分类号:
TN011
DOI:
10.3969/j.issn.1001-0505.2001.04.002
摘要:
用矩量法(MOM)、预条件共轭梯度法(PCG)和快速傅里叶变换(FFT)的混合技术分析了电大尺寸导带的二维散射问题.该方法以等效电流作为未知函数建立积分方程或积-微分方程,然后通过矩量法获得一个线性方程组.用预条件共轭梯度法与快速傅里叶变换的结合算法(PCGFFT)来求解这个线性方程组,其中采用了T.Chan优化循环预条件器.该混合技术降低了对计算机内存的需求,加快了算法的迭代速度,且增强了算法的收敛性.
Abstract:
A mixed technique of moment method(MOM), preconditioned conjugate gradient method(PCG) and fast Fourier transform(FFT) is presented to deal with the 2D scattering from a conducting strip of electrically large size. In this method, the integral or integro-differential equation for the equivalent current is first formulated, and then is turned into a linear algebra system by MOM, whose coefficient matrix is Toeplitz one. A combined algorithm of PCG and FFT is used to solve the system, where the optimal circulant preconditioner of T.Chan is adopted. The above method reduces the need for computer memory, speeds the iteration and enhances the convergence.

参考文献/References:

[1] Sarkar T K,Arvas E,Rao S M.Application of FFT and the conjugate gradient method for the solution of electromagnetic radiation from electrically large and small conducting bodies.IEEE Trans Antennas Propagation,1986,AP-34(5):635~640
[2] 盛剑霓.工程电磁场数值分析.西安:西安交通大学出版社,1991.409~438
[3] Chan R,Ng N.Conjugate gradient methods for Toeplitz systems.SIAM Review,1996,38(3):427~482
[4] 周后型,洪伟.预条件共轭梯度法在辐射和散射问题中的应用.电波科学学报,2000,15(4):501~505
[5] Butler C M,Wilton D R.General analysis of narrow strips and slots.IEEE Trans Antennas Propagation,1980,AP-28:42~48

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备注/Memo

备注/Memo:
作者简介:周后型,男,1956年生,硕士,副教授.
基金项目:国家杰出青年基金资助项目(69625102).
更新日期/Last Update: 2001-07-20