A low-dispersive high-order unconditionally stable FDTD method

Author

Fenghua Zheng ; Zhizhang Chen

Author_Institution

Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada

Volume

3

fYear

2000

fDate

16-21 July 2000

Firstpage

1514

Abstract

A low-dispersive high-order unconditionally stable finite-difference-time-domain (FDTD) method based on alternating direct implicit technique (ADI) is presented in this paper for the time-domain solution of Maxwell´s equation. The stability and dispersion performance of the scheme is investigated. It is observed that the high order scheme reduces the numerical dispersion and anisotropy and therefore leads to the potential eight-times saving computation memory. It is expected that the scheme can be used on a grid much coarser than that used with the 2/sup nd/-order FDTD schemes.

Keywords

Maxwell equations; electromagnetic field theory; finite difference time-domain analysis; numerical stability; FDTD method; Maxwell´s equation; alternating direct implicit technique; anisotropy; dispersion performance; electromagnetic problems; finite-difference-time-domain method; high order scheme; low-dispersive method; numerical dispersion; stability; unconditionally stable method; Anisotropic magnetoresistance; Eigenvalues and eigenfunctions; Finite difference methods; Matrices; Maxwell equations; Numerical models; Stability; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2000. IEEE

Conference_Location

Salt Lake City, UT, USA

Print_ISBN

0-7803-6369-8

Type

conf

DOI

10.1109/APS.2000.874499

Filename

874499