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

Author

Zheng, Hong-Xing ; Leung, Kwok Wa

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China

Volume

53

Issue

7

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

2295

Lastpage

2301

Abstract

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.

Keywords

Maxwell equations; computational electromagnetics; dispersion relations; finite difference time-domain analysis; numerical stability; ADI-FDTD; alternating-direction implicit; dispersion relation; finite-difference time-domain method; numerical dispersion; numerical phase velocity error; numerical stability; Anisotropic magnetoresistance; Dispersion; Error correction; Finite difference methods; Helium; Maxwell equations; Numerical stability; Time domain analysis; Two dimensional displays; Velocity control; Alternate-direction-implicit (ADI) method; artificial anisotropic parameters; finite-difference time-domain (FDTD) technique; numerical dispersion; phase velocity error;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2005.850441

Filename

1463347