The alternating-direction implicit (ADI) FDTD method is free of the Courant-Friedrich-Levy (CFL) stability condition, however the numerical dispersion error increases after the ADI method is applied. In this paper, a high-order ADI-FDTD method, which using higher order accurate approximation at the spatial derivative, is formulated. The new scheme reduces the numerical dispersion error and is still unconditionally stable. Besides, the sixth-order 2-D ADI-FDTD method is used to study the effect of different time-step sizes on stability and numerical dispersion.
|Number of pages||4|
|Journal||IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)|
|Publication status||Published - 1 Sept 2003|
|Event||2003 IEEE International Antennas and Propagation Symposium and USNC/CNC/URSI North American Radio Science Meeting - Columbus, OH, United States|
Duration: 22 Jun 2003 → 27 Jun 2003
ASJC Scopus subject areas
- Electrical and Electronic Engineering