Piecewise linear recursive convolution finite element time domain method for electromagnetic analysis of dispersive media

被引:3
|
作者
Li, Linqian [1 ,2 ]
Wei, Bing [1 ,2 ]
Yang, Qian [1 ,2 ]
Ge, Debiao [1 ,2 ]
机构
[1] Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Shaanxi, Peoples R China
[2] Xidian Univ, Collaborat Innovat Ctr Informat Sensing & Underst, Xian 710071, Shaanxi, Peoples R China
来源
OPTIK | 2019年 / 198卷
基金
中国国家自然科学基金;
关键词
Piecewise-lnear recursive convolution finite-element time-domain; Dispersive media; Convolution function; VECTOR BASIS FUNCTIONS; FETD;
D O I
10.1016/j.ijleo.2019.163196
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The constitutive relation of dispersive media between displacement vector and electric field in time domain is complicated convolution which is hardly to calculate directly. In this paper, based on finite-element time-domain, combined total-field and scattered-field decomposition technique, the weak form solution equations including electric field E and convolution function psi for dispersive media are described, and then the plane wave in total-field region containing dispersive media is introduced. The iterative formulas of piecewise linear recursive convolution finite element time domain dealing with constitutive relation for dispersive media are derived. The far scattering field calculation of piecewise-linear recursive convolution for three kinds of general dispersive media models, i.e. Drude model, Debye model and Lorentz model is implemented.
引用
收藏
页数:7
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