EFFICIENT ANALYSIS OF SCATTERING FROM MULTIPLE 3-D CAVITIES BY MEANS OF A FE-BI-DDM METHOD

被引：11

作者：

Cui, Z-W ^{[1
]}

Han, Y-P ^{[1
]}

Li, C-Y ^{[1
]}

Zhao, W-J ^{[1
]}

机构：

[1] Xidian Univ, Sch Sci, Xian, Shaanxi, Peoples R China

来源：

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER | 2011年 / 116卷

基金：

中国国家自然科学基金;

关键词：

ELECTROMAGNETIC SCATTERING; INTEGRAL-EQUATION; WAVE-GUIDES; ALGORITHM; MLFMA; APERTURES; SURFACES; SCHEME; GROOVES;

D O I：

10.2528/PIER11042309

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];

摘要：

A finite element-boundary integral-domain decomposition method is presented for analyzing electromagnetic scattering problems involving multiple three-dimensional cavities. Specifically, the edge-based finite element method is applied inside each cavity to derive a linear system of equations associated with unknown fields. The boundary integral equation is then applied on the apertures of all the cavities to truncate the computational domain and to connect the matrix subsystem generated from each cavity. With the help of an iterative domain decomposition method, the coupling system of equations is reduced to a small one which only includes the unknowns on the apertures. To further reduce computational burdens, the multilevel fast multipole algorithm is adopted to solve the reduced system. The numerical results for the near and far fields of several selected multi-cavity problems are presented to demonstrate the validity and capability of the proposed method.

引用

页码：425 / 439

页数：15

共 30 条

[1]

Finite-element solution of the problem of scattering from cavities in metallic screens using the surface integral equation as a boundary constraint [J].