Title :
Uniaxial perfectly matched layer media for an unconditionally stable 3-D ADI-FD-TD method
Author_Institution :
Electron. Lab., Nokia Res. Center, Helsinki, Finland
Abstract :
An unsplit-field perfectly matched layer (PML) medium based on Gedney´s uniaxial PML (UPML) scheme is proposed for an unconditionally stable three-dimensional alternating direction implicit finite-difference time-domain (ADI-FD-TD) method. The effectiveness of the proposed ADI-UPML absorber is demonstrated through a numerical example. In addition, to have a better understanding on the ADI-FD-TD method, the actual performance (i.e., while both the reflection and dispersion errors are considered) of the ADI-UPML as a function of the time step is also illustrated.
Keywords :
anisotropic media; electromagnetic field theory; finite difference time-domain analysis; ADI-UPML absorber; Courant stability condition; Gedney uniaxial PML scheme; arbitrary anisotropic media; electromagnetic fields; numerical example; time step; unconditionally stable 3-D ADI-FD-TD method; unconditionally stable 3-D alternating direction implicit finite-difference time-domain method; uniaxial perfectly matched layer media; unsplit-field perfectly matched layer medium; Anisotropic magnetoresistance; Boundary conditions; Equations; Finite difference methods; Lattices; Perfectly matched layers; Reflection; Stability; Tensile stress; Time domain analysis;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2002.805540
