Title :
Stability and Dispersion Analysis for ADI-FDTD Method in Lossy Media
Author :
Fu, Weiming ; Tan, Eng Leong
Author_Institution :
Sch. of Electr. Electron. Eng., Nanyang Technol. Univ., Singapore
fDate :
4/1/2007 12:00:00 AM
Abstract :
The stability and dispersion analysis for the alternating-direction-implicit finite-difference time-domain (ADI- FDTD) method in lossy media is presented. Although the stability and numerical dispersion have been analyzed for the ADI-FDTD method, most of the analysis is dedicated to the cases of lossless media. Here, the stability and dispersion analysis is performed for the method in lossy media. The stability analysis theoretically proves the unconditional stability of the ADI-FDTD method in lossy media. Meanwhile, the dispersion analysis reveals the numerical loss and dispersion characteristics of this method. This will be meaningful for the evaluation and further development of the ADI-FDTD method in lossy media
Keywords :
absorbing media; computational electromagnetics; dispersion (wave); finite difference time-domain analysis; numerical stability; ADI-FDTD; alternating-direction-implicit; dispersion analysis; finite-difference time-domain method; lossy media; stability analysis; Dispersion; Finite difference methods; Helium; Image analysis; Numerical stability; Performance analysis; Propagation constant; Propagation losses; Stability analysis; Time domain analysis; Alternating-direction-implicit finite-difference time-domain (ADI-FDTD); lossy media; numerical dispersion; stability; unconditionally stable;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2007.893378
