复杂媒质目标电磁散射问题的有限元分析  

Applying the finite element method to analyze EM scattering of the complex media targets

作　　者：彭文峰[1] 宛汀[1] 郁美艳[1] 

机构地区：[1]南京理工大学,江苏南京210094

出　　处：《电波科学学报》2013年第1期74-79,共6页Chinese Journal of Radio Science

摘　　要：采用有限元方法分析含有各向异性、双各向同性以及双各向异性的复杂媒质目标的电磁散射问题.建立了具有通用形式的线性媒质——双各向异性媒质的有限元泛函公式,并推导了其有限元矩阵方程的具体表达式.通过对铁氧体球、手征球、等离子球和Ω媒质体等四类复杂媒质结构的数值分析,证明了本文给出的复杂媒质散射问题有限元分析方法的准确性以及通用性.In this paper, the finite element method （FEM） is applied tO analyze the electro-magnetic scattering of the complex media targets, such as the anisotropic media bi-isotropic media and bi-anisotropic media. The general FEM functional for- mulation of linear media is built, and the specific expression of the FEM matrix e- quation is derived. This FEM functional formulation is applicable for the bi-aniso- tropic media, and for the anisotropic or bi-isotropic media as well. In order to dem- onstrate the accuracy and generality of the developed FEM, we calculate some scat- tering from the ferrite sphere, chiral sphere, plasma sphere and g2 media target. The numerical results are in agreement with the published data.

关 键 词：有限元 电磁散射 各向异性媒质 双各向同性媒质 双各向异性媒质 

分 类 号：TN925[电子电信—通信与信息系统]