The nonstandard FDTD method using a complex formulation

Author

Taguchi, Kenji ; Ohtani, Tadao ; Kashiwa, Tatsuya ; Kanai, Yasushi

Author_Institution

Kitami Inst. of Technol., Japan

Volume

40

Issue

2

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

1448

Lastpage

1451

Abstract

In this paper, a complex nonstandard finite-difference time-domain (CNS-FDTD) method is proposed in order to simulate wave propagation in lossy media. To clarify the characteristics of the method, expressions for the numerical propagation constant and the stability condition are derived. It is found that the CNS-FDTD method is much more accurate and stable than the conventional finite-difference time-domain (FDTD) method. The method is applied to the analysis of a fin ferrite electromagnetic wave absorber with a periodic structure.

Keywords

electromagnetic wave absorption; electromagnetic wave propagation; ferrite devices; finite difference time-domain analysis; stability; complex formulation; ferrite electromagnetic wave absorber; finite-difference time-domain; lossy media; nonstandard FDTD method; numerical propagation; phase error; stability condition; wave propagation; Difference equations; Electromagnetic analysis; Electromagnetic scattering; Ferrites; Finite difference methods; Frequency; Propagation constant; Propagation losses; Stability; Time domain analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.825011

Filename

1284695