An efficient method to reduce the numerical dispersion in the ADI-FDTD

被引：53

作者：

Zheng, HX ^{[1
]}

Leung, KW ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2005年 / 53卷 / 07期

关键词：

alternate-direction-implicit (ADI) method; artificial anisotropic parameters; finite-difference time-domain (FDTD) technique; numerical dispersion; phase velocity error;

D O I：

10.1109/TMTT.2005.850441

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 new approach to reduce the numerical dispersion in the finite-difference time-domain (FDTD) method with alternating-direction implicit (ADI) is studied. By adding anisotropic parameters into the ADI-FDTD formulas, the error of the numerical phase velocity can be controlled, causing the numerical dispersion to decrease significantly. The numerical stability and dispersion relation are discussed in this paper. Numerical experiments are given to substantiate the proposed method.

引用

页码：2295 / 2301

页数：7

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