DocumentCode :
1156300
Title :
Transient scattering problems solution by surface equivalent sources
Author :
Celozzi, S. ; Feliziani, M.
Author_Institution :
Dept. of Electr. Eng., Rome Univ., Italy
Volume :
30
Issue :
5
fYear :
1994
fDate :
9/1/1994 12:00:00 AM
Firstpage :
3148
Lastpage :
3151
Abstract :
A numerical study is developed to evaluate the response of a system excited by a transient incident field. A new formulation is introduced in order to apply surface impedance boundary conditions (SIBC) while adopting the scattering formulation. The elimination of conductive regions requires the imposition of appropriate interface conditions, which are represented by equivalent current sources depending on the incident field. In the time domain the equivalent sources are described by a convolution integral in which appears the transient surface impedance derived analytically by the inverse Laplace transform. The resulting equations system is solved by applying the finite element method (FEM) in space and the Crank-Nicolson scheme in time
Keywords :
Laplace transforms; electromagnetic wave scattering; finite element analysis; Crank-Nicolson scheme; convolution integral; equivalent current sources; finite element method; interface conditions; inverse Laplace transform; surface equivalent sources; surface impedance boundary conditions; transient incident field; transient scattering problems; Boundary conditions; Convolution; Electromagnetic scattering; Integral equations; Laplace equations; Magnetic domains; Maxwell equations; Surface impedance; Time domain analysis; Transient analysis;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.312605
Filename :
312605
Link To Document :
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