Simplification of dispersion and stability analysis for ADI-FDTD method in lossy media

Author

Zheng, Hong-Xing ; Feng, Li-Ying

Author_Institution

Dept. of Electron. Eng., Tianjin Univ. of Technol. & Educ., Tianjin

fYear

2008

fDate

16-20 Dec. 2008

Firstpage

1

Lastpage

4

Abstract

In this work, the unconditional stability of the ADI-FDTD method in lossy media has been proven in our approach. The numerical dispersion and stability characteristics of the ADI- FDTD method in lossy media are analyzed. The dispersion analysis actually has a more general meaning, which includes the investigations of both the numerical loss and numerical dispersion, since the propagation constant is complex for the lossy media case. This is different from the previous dispersion analysis based on the assumption of lossless media, where the propagation constant is purely imaginary. So it is necessary to perform the dispersion analysis for the ADI-FDTD method in lossy media to reveal its individual characteristics, which will be meaningful for the application and further development of the ADI-FDTD method in lossy media.

Keywords

finite difference time-domain analysis; numerical stability; ADI-FDTD method; dispersion analysis; dispersion simplification; lossless media; lossy media; numerical dispersion; numerical loss; propagation constant; stability analysis; stability characteristics; unconditional stability; Dispersion; Educational technology; Finite difference methods; Frequency; Grid computing; Performance analysis; Propagation constant; Propagation losses; Stability analysis; Time domain analysis;

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.2008.4958496

Filename

4958496