Title :
Suppression of late-time instabilities in 3-D-FDTD analyses by combining digital filtering techniques and efficient boundary conditions
Author :
Sarto, Maria Sabrina ; Scarlatti, Alberto
Author_Institution :
Dept. of Electr. Eng., Rome Univ., Italy
fDate :
9/1/2001 12:00:00 AM
Abstract :
A new computational procedure is developed to suppress late-time instabilities in three-dimensional finite-difference time-domain analyses. The method combines low-pass filtering schemes with absorbing boundary conditions. The computational domain is truncated at only a few cells from the scattering object. Applications concern the analysis of long transients exciting frequencies up to a few megahertz
Keywords :
FIR filters; digital filters; electromagnetic wave absorption; electromagnetic wave propagation; electromagnetic wave scattering; filtering theory; finite difference time-domain analysis; numerical stability; transient analysis; 3D FDTD analyses; ABC; absorbing boundary conditions; computational domain truncation; computational procedure; digital filtering techniques; efficient boundary conditions; finite-difference time-domain analyses; late-time instabilities suppression; long transients; low-pass filtering schemes; scattering object; three-dimensional FDTD analysis; Boundary conditions; Digital filters; Electromagnetic scattering; Filtering; Finite difference methods; Finite impulse response filter; Light scattering; Low pass filters; Time domain analysis; Transient analysis;
Journal_Title :
Magnetics, IEEE Transactions on
