Title :
Split-field and anisotropic-medium PML-FDTD implementations for inhomogeneous media
Author :
Teixeira, Fernando L. ; Moss, Christopher D. ; Chew, Weng C. ; Kong, Jin A.
Author_Institution :
Res. Lab. of Electron., MIT, Cambridge, MA, USA
fDate :
1/1/2002 12:00:00 AM
Abstract :
In this paper, we present three-dimensional finite-difference time-domain (FDTD) algorithms for transient simulation of electromagnetic-wave propagation in arbitrary inhomogeneous media, which incorporate the perfectly matched layer (PML) absorbing boundary condition. We discuss the choice of constitutive parameters inside the PML layers to match the interior inhomogeneous media for planar interfaces and corner regions. We illustrate the method using both a split-fleld PML-FDTD formulation in Cartesian coordinates and an anisotropic medium (unsplit) PML-FDTD formulation in cylindrical coordinates
Keywords :
electromagnetic field theory; electromagnetic wave absorption; electromagnetic wave propagation; finite difference time-domain analysis; inhomogeneous media; transient analysis; 3D FDTD algorithms; 3D finite-difference time-domain algorithms; Cartesian coordinates; PML absorbing boundary condition; PML layers; anisotropic medium PML-FDTD formulation; anisotropic-medium PML-FDTD implementation; arbitrary inhomogeneous media; constitutive parameters; corner regions; cylindrical coordinates; electromagnetic-wave propagation; inhomogeneous media; interior inhomogeneous media; perfectly matched layer absorbing boundary condition; planar interfaces; split-field PML-FDTD formulation; split-field PML-FDTD implementation; transient simulation; Anisotropic magnetoresistance; Biological system modeling; Boundary conditions; Circuit simulation; Computational modeling; Finite difference methods; Laboratories; Nonhomogeneous media; Perfectly matched layers; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
