Title :
A method for introducing soft sources in the PSTD algorithm
Author :
Gao, Xiang ; Mirotznik, Mark S. ; Prather, Dennis W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Delaware, Newark, DE, USA
fDate :
7/1/2004 12:00:00 AM
Abstract :
This paper presents a method for introducing a soft source in the pseudospectral time-domain algorithm. In this method, a scalar weighting term ζ is introduced in the total field/scattered field approach in computational electromagnetics. Using our modified version of Maxwell´s equations, soft sources can be introduced simply by adding incident terms in the 8-10-cell connecting region between the total field and the scattered field. One-dimensional (1-D) and two-dimensional (2-D) examples of soft source generation and a 2-D scattering study of a dielectric cylinder are given.
Keywords :
Maxwell equations; computational electromagnetics; dielectric bodies; electromagnetic wave scattering; spectral-domain analysis; time-domain analysis; 2D scattering; Maxwell equation; PSTD algorithm; computational electromagnetics; dielectric cylinder; pseudospectral time-domain algorithm; scalar weighting term; scattered field approach; soft sources introduction; Computational electromagnetics; Dielectrics; Electromagnetic scattering; Fast Fourier transforms; Finite difference methods; Joining processes; Maxwell equations; Particle scattering; Time domain analysis; Two dimensional displays; Maxwell's equations; PSTD; pseudospectral time-domain; soft source;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2004.831304
