Wave source conditions for the unconditionally stable ADI-FDTD method

Author

Tae-Woo Lee ; Hagness, S.C.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Wisconsin-Madison, Madison, NJ, USA

Volume

4

fYear

2001

Firstpage

142

Abstract

We propose an alternating-direction implicit (ADI) scheme which is unconditionally stable, thereby permitting the size of the time step to be chosen based on accuracy considerations rather than stability limits. We show that standard explicit formulations can introduce significant errors in the field values near the source under certain circumstances. In this paper, we present proper source conditions for ADI-FDTD. Applications for which ADI-FDTD offers potentially large computational savings include high-speed VLSI interconnects and low-frequency bioelectromagnetics.

Keywords

electromagnetic wave propagation; finite difference time-domain analysis; numerical stability; ADI-FDTD method; alternating-direction implicit scheme; explicit formulations; high-speed VLSI interconnects; low-frequency bioelectromagnetics; unconditional stability; wave source conditions; Current; Drives; Finite difference methods; Magnetic fields; Magnetic separation; Maxwell equations; Stability; Time domain analysis; Very large scale integration; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2001. IEEE

Conference_Location

Boston, MA, USA

Print_ISBN

0-7803-7070-8

Type

conf

DOI

10.1109/APS.2001.959419

Filename

959419