Unconditionally stable multidomain pseudospectral time-domain (PSTD) method

Author

Gang Zhao ; Qing Huo Liu

Author_Institution

Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA

Volume

4

fYear

2003

fDate

22-27 June 2003

Firstpage

336

Abstract

The pseudospectral time-domain (PSTD) method has shown a marked improvement in accuracy and efficiency over the FDTD method. Nevertheless, it likewise suffers from the CFL stability condition. In this work, based on the concepts of ADI- and SS-FDTD methods, as well as our previously developed 3D PSTD method (G. Zhao et al, IEEE Microwave Wireless Compon. Lett.), we derive the unconditionally stable multidomain PSTD algorithm. We demonstrate that the implicit finite difference scheme can be applied to the PSTD method and make it free of the CFL stability condition.

Keywords

finite difference methods; numerical stability; time-domain analysis; 3D PSTD method; ADI-FDTD; CFL stability condition; SS-FDTD method; implicit finite difference scheme; multidomain pseudospectral time-domain method; unconditionally stable PSTD method; Circuit simulation; Circuit stability; Computational geometry; Finite difference methods; Frequency selective surfaces; Gold; Maxwell equations; Stability criteria; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1220188

Filename

1220188