An unconditionally stable split-step FDTD method for low anisotropy

被引：23
|
作者：
Kusaf, Mehmet [1 ]
Oztoprak, Abdullah Y. [2 ]
机构：
[1] Cyprus Int Univ, Dept Elect & Elect Engn, Mersin 10, Turkey
[2] Eastern Mediterranean Univ, Dept Elect & Elect Engn, Mersin 10, Turkey
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2008年 / 18卷 / 04期
关键词：
alternating direction implicit finite-differencetime-domain (ADI FDTD); split-step FDTD; unconditionally stable FDTD methods;
D O I：
10.1109/LMWC.2008.918865
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：
Split-step unconditionally stable finite-difference time-domain (FDTD) methods have higher dispersion and anisotropic errors for large stability factors. A new split-step method with four sub-steps is introduced and shown to have much lower anisotropy compared with the well known alternating direction implicit finite-difference time-domain (ADI-FDTD) and other known split step methods. Another important aspect of the new method is that for each space step value there is a stability factor value that the numerical propagation phase velocity is isotropic.
引用
收藏
页码：224 / 226
页数：3
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