DocumentCode :
1280021
Title :
Generation of a wide-band electromagnetic response through a Laguerre expansion using early-time and low-frequency data
Author :
Sarakr, T.K. ; Koh, Jinhwan
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Syracuse Univ., NY, USA
Volume :
50
Issue :
5
fYear :
2002
fDate :
5/1/2002 12:00:00 AM
Firstpage :
1408
Lastpage :
1416
Abstract :
The objective of this paper is to generate a wide-band and temporal response for three-dimensional conducting structures. This is accomplished through the use of a hybrid method that involves generation of early-time and low-frequency information for the electromagnetic structure of interest. These two, early-time and low-frequency information, are mutually complementary and contain all the necessary information for an ultrawide-band response for a sufficient record length. The time-domain response is modeled as a Laguerre series expansion. The frequency-domain response is also expressed in an analytic form using the same expansion coefficients used in modeling of the time-domain response. The data in both the domains is used to solve for the polynomial coefficients in a data-fitting procedure. Once the polynomial coefficients are known, the available data is simultaneously extrapolated in both domains. This approach is attractive because expansions with a few terms give good extrapolation in both time and frequency domains. The computation involved is minimal with this method
Keywords :
conducting bodies; electromagnetic fields; electromagnetic wave scattering; frequency-domain analysis; polynomials; stochastic processes; time-domain analysis; Laguerre series expansion; early-time information; electromagnetic response; expansion coefficients; frequency-domain response; low-frequency information; polynomial coefficients; temporal response; three-dimensional conducting structures; time-domain response; ultrawide-band response; wide-band response; Electromagnetic analysis; Extrapolation; Frequency domain analysis; Hybrid power systems; Message-oriented middleware; Moment methods; Polynomials; Reflection; Time domain analysis; Wideband;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/22.999156
Filename :
999156
Link To Document :
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