Birefringent dispersive FDTD subgridding scheme

被引:2
|
作者
De Deckere, B. [1 ]
Van Londersele, A. [1 ]
De Zutter, D. [1 ]
Vande Ginste, D. [1 ]
机构
[1] Univ Ghent, Dept Informat Technol, Ghent, Belgium
关键词
MAXWELLS EQUATIONS; MEDIA;
D O I
10.1049/el.2016.1709
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
A novel 2D finite difference time domain (FDTD) subgridding method is proposed, only subject to the Courant limit of the coarse grid. By making mu or epsilon inside the subgrid dispersive, unconditional stability is induced at the cost of a sparse, implicit set of update equations. By only adding dispersion along preferential directions, it is possible to dramatically reduce the rank of the matrix equation that needs to be solved.
引用
收藏
页码:1455 / 1456
页数:2
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