Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.959419
