Modeling Debye dispersive media using efficient ADI-FDTD method

Author

Heh, Ding Yu ; Tan, Eng Leong

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2009

fDate

1-5 June 2009

Firstpage

1

Lastpage

4

Abstract

This paper presents an efficient, 3-D alternating-direction-implicit finite-difference time-domain (ADI-FDTD) method for modeling wave propagation in Debye dispersive media. The efficient algorithm features a simpler, matrix-operator-free right hand side than the conventional ADI-FDTD method which results in substantial reduction of floating point operations (flops) counts and memory indexing. Formulation of update equations are shown and numerical results are performed to illustrate the accuracy and efficiency of such efficient algorithm.

Keywords

dispersive media; electromagnetic wave propagation; finite difference time-domain analysis; matrix algebra; 3D alternating-direction-implicit finite-difference time-domain method; ADI-FDTD method; Debye dispersive media modeling; floating point operation; matrix operator; memory indexing; update equation; wave propagation modeling; Arithmetic; Dispersion; Finite difference methods; Frequency; Indexing; Maxwell equations; Permittivity; Stability; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE

Conference_Location

Charleston, SC

ISSN

1522-3965

Print_ISBN

978-1-4244-3647-7

Type

conf

DOI

10.1109/APS.2009.5172058

Filename

5172058