A Fundamental LOD-FDTD Method in Cylindrical Coordinates

被引：7
|
作者：
Shibayama, Jun [1 ]
Ito, Masato [1 ]
Yamauchi, Junji [1 ]
Nakano, Hisamatsu [1 ]
机构：
[1] Hosei Univ, Fac Sci & Engn, Tokyo 1848584, Japan
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2017年 / 29卷 / 11期
关键词：
Finite-difference time-domain (FDTD) method; locally one-dimensional (LOD) scheme; fundamental scheme; terahertz (THz) wave; cylindrical coordinates; convolutional perfectly matched layer (CPML); METAL;
D O I：
10.1109/LPT.2017.2693293
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：
An efficient implicit finite-difference time-domain (FDTD) algorithm in cylindrical coordinates is developed on the basis of a fundamental locally 1-D scheme. The Sherman-Morrison formula is introduced to treat a cyclic matrix and the image theory is utilized to impose the perfect electric conductor boundary condition. The effectiveness of the present method is investigated through the analysis of a metal disc-type terahertz surface wave splitter. The computation time is found to be reduced to less than half that of the explicit FDTD method, while maintaining a comparable accuracy.
引用
收藏
页码：865 / 868
页数：4
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