Complex Source Beam Method for EM Scattering From PEC Objects

被引：1
|
作者：
Ding, Dazhi [1 ]
Fan, Zhenhong [1 ]
Tao, Shifei [1 ]
Chen, Rushan [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Dept Commun, Nanjing 210094, Jiangsu, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷
关键词：
Complex-source beam (CSB); electromagnetic scattering; multilevel fast multipole algorithm (MLFMA); ray-propagation fast multipole algorithm (RP-MLFMA); window function; FAST-MULTIPOLE ALGORITHM; ELECTROMAGNETIC-WAVE SCATTERING; EQUATIONS;
D O I：
10.1109/LAWP.2014.2361914
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter proposes a fast method that combines the complex-source beam (CSB) and multilevel fast multipole algorithm (MLFMA) for electromagnetic (EM) scattering problems. The CSB for the MLFMA is obtained by introducing an imaginary part for the independent variable of the spherical Hankel function in the translation operator, which makes the translation operator directional. Furthermore, a window function is introduced in the translation operator to make it more directional. A large part of the angular translation operators are then discarded with an angle threshold. Numerical examples demonstrate that the translation operator memory cost can be reduced significantly compared to the MLFMA, and more accurate results can be obtained compared to the ray-propagation multilevel fast multipole algorithm (RP-MLFMA).
引用
收藏
页码：346 / 349
页数：4
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