A new unconditionally-stable FDTD Method with high-order accuracy and low anisotropy

Author

Kong, Yong-Dan ; Chu, Qing-Xin

Author_Institution

Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou

fYear

2008

fDate

16-20 Dec. 2008

Firstpage

1

Lastpage

4

Abstract

A new unconditionally-stable FDTD method based on split-step scheme with high-order accuracy and low anisotropy has been presented, in which symmetric operator and uniform splitting are adopted to decompose the Maxwell´s matrix into six sub-matrices, and accordingly, six sub-steps is produced. The dispersion error and the anisotropic error of the proposed method are lower than the ADI-FDTD method, the SS-FDTD (2, 2) method and the SSCN6-FDTD method. Especially, corresponding to a certain cell per wavelength (CPW), there is a Courant number value making the numerical anisotropic error to be zero

Keywords

Maxwell equations; finite difference time-domain analysis; matrix algebra; ADI-FDTD method; Maxwell matrix; SSCN6-FDTD method; cell per wavelength; high-order accuracy; numerical anisotropic error; Anisotropic magnetoresistance; Coplanar waveguides; Equations; Finite difference methods; Matrix decomposition; Permittivity; Propagation losses; Symmetric matrices; Time domain analysis; Two dimensional displays;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2008. APMC 2008. Asia-Pacific

Conference_Location

Macau

Print_ISBN

978-1-4244-2641-6

Electronic_ISBN

978-1-4244-2642-3

Type

conf

DOI

10.1109/APMC.2008.4958491

Filename

4958491