Time-domain equivalent edge currents for transient scattering
Date
2001
Authors
Altıntaş, A.
Russer, P.
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Source Title
IEEE Transactions on Antennas and Propagation
Print ISSN
0018-926X
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Publisher
IEEE
Volume
49
Issue
4
Pages
602 - 606
Language
English
Type
Article
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Abstract
Time-domain equivalent edge currents (TD-EEC) are developed for the transient scattering analysis. The development is based on the Fourier inversion of frequency domain equivalent edge current expressions. The time-domain diffracted fields are expressed in terms of a contour integral along the diffracting edges for any arbitrary input pulse shape, thereby yielding finite results at the caustics of diffracted rays. The approach also eliminates the need for the evaluation of a convolution integral in the time domain geometrical theory of diffraction (GTD) analysis. The results are compared with the first order GTD results for the transient scattering analysis for a circular disk.
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Keywords
Electromagnetic transient scattering , Equivalent edge currents , High-frequency techniques in electromagnetics , Time-domain methods , Diffraction , Electric currents , Fourier optics , Frequency domain analysis , Integration , Time domain analysis , Geometrical theory of diffraction (GTD) , Time-domain equivalent edge-currents (TD-EEC) , Electromagnetic wave scattering