Efficient implementation of 3-D ADI-FDTD method for lossy media

Author

Heh, Ding Yu ; Tan, Eng Leong

Author_Institution

Sch. of EEE, Nanyang Technol. Univ., Singapore, Singapore

fYear

2009

fDate

7-12 June 2009

Firstpage

313

Lastpage

316

Abstract

This paper presents the efficient implementation of 3-D alternating direction implicit finite-difference time-domain (ADI-FDTD) method for lossy media. Utilizing forward-backward scheme and symmetrical source implementation, the efficient ADI-FDTD method features better efficiency and simplicity where the conductivity terms and source excitation are required only for the first substep. Detail formulation of the efficient algorithm is shown and it yields exactly the same computation as the conventional ADI-FDTD method for lossy media. The accuracy and higher efficiency are also illustrated and verified by means of numerical results.

Keywords

absorbing media; finite difference time-domain analysis; microwave materials; radiowave propagation; 3D ADI-FDTD method; alternating direction implicit finite-difference time-domain; forward-backward scheme; lossy media; symmetrical source implementation; Conductivity; Current density; Finite difference methods; Maxwell equations; Numerical simulation; Symmetric matrices; Time domain analysis; Alternating direction implicit finte-difference time-domain (ADI-FDTD); lossy media; unconditionally stable method;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International

Conference_Location

Boston, MA

ISSN

0149-645X

Print_ISBN

978-1-4244-2803-8

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2009.5165696

Filename

5165696