Analysis of EM Scattering by Composite Conducting and Dielectric Object Using Combined Field Integral Equation with MLFMA

QUE Xiao-feng; NIE Zai-ping; HU Jun

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Analysis of EM Scattering by Composite Conducting and Dielectric Object Using Combined Field Integral Equation with MLFMA

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- Analysis of EM Scattering by Composite Conducting and Dielectric Object Using Combined Field Integral Equation with MLFMA
- Acta Electronica Sinica Vol. 35, Issue 11, Pages: 2062-2066(2007)
- 作者机构：
  
  电子科技大学电子工程学院,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN011
- Published：2007
- 稿件说明：
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QUE Xiao-feng, NIE Zai-ping, HU Jun. Analysis of EM Scattering by Composite Conducting and Dielectric Object Using Combined Field Integral Equation with MLFMA[J]. Acta Electronica Sinica, 2007, 35(11): 2062-2066.
DOI：

QUE Xiao-feng, NIE Zai-ping, HU Jun. Analysis of EM Scattering by Composite Conducting and Dielectric Object Using Combined Field Integral Equation with MLFMA[J]. Acta Electronica Sinica, 2007, 35(11): 2062-2066. DOI：

摘要

针对组合目标电磁散射问题

采用一类新的混合场积分方程进行分析.通过合理选择比例系数组合表面电场和磁场积分方程

构造出具有良好收敛性的阻抗矩阵.MLFMA的迭代求解采用广义最小残差方法(GMRES)

结合预条件技术进一步减少迭代次数

加速计算并提高处理电大尺寸导体介质复合目标的能力.研究了几类典型目标电磁散射特性并比较了计算效率

数值算例验证了该方法的准确性和高效性.

Abstract

A new combined field integral equation is proposed to analyze the electromagnetic scattering for composite conducting and dielectric object.Through properly choosing the coupling coefficients of the equations

the resultant matrix equation achieves better convergence properties.The restarted generalized minimum residual method (GMRES) is applied in the multilevel fast multipole algorithm (MLFMA) and preconditioning technique is used to further improve the convergence rate.Numerical examples are presented to compare the efficiency of different methods and show the validity and high efficiency of proposed method.

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Related Institution

School of Integrated Circuits and Eletronics, Beijing Institute of Technology

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