Solving 3D Electromagnetic Scattering and Radiation by Local Multilevel Fast Multipole Algorithm  

作　　者：HU Jun NIE Zaiping LEI Lin RUI Xi WANG Jun 

机构地区：[1]College of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China

出　　处：《Chinese Journal of Electronics》2007年第2期366-369,共4页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No.60431010, No.60601008）, New Century Excellent Talent Support Plan of China （No.NCET-05-0805）, 2006＇ Young Doctor Discipline Platform of UESTC.

摘　　要：In this paper, a Local multilevel fast multipole algorithm （LMLFMA） is proposed to further speed up the efficiency of MLFMA in Conjugate gradient （CG） iteration. In the LMLFMA, only the local interactions between the subscatters are taken into account. And, the interaction regions in iteration are varying adaptively with iterative current. With decrease of iterative error, iteratire current tends to real one, more and more interactions between subscatters can be neglected. When the iteratire error is less than a critical iteration error, only the interactions between nearby regions at the finest level are considered. Numerical results show that the LMLFMA has good accuracy, and much better efficiency than traditional MLFMA.

关 键 词：Scattering and radiation Multilevel fast multipole algorithm （MLFMA） Conjugate gradient Electrically large Local interaction. 

分 类 号：TN011[电子电信—物理电子学]