NDLI: A Radon Transform Interpretation of Contour Integral in Time-Domain Equivalent Edge Currents

Content Provider	IEEE Xplore Digital Library
Author	Ying Guan Shu-Xi Gong Shuai Zhang Yun-Xue Xu
Copyright Year	2002
Abstract	Time-domain equivalent edge currents (TD-EEC) require the calculation of an integral of the input pulse over the edge contour and thereby yield finite results at the caustics of diffracted rays. Generally, the edge contour is subdivided into a series of straight segments, and the contour integral is evaluated as a sum of the integration over each segment. However, the length of each straight segment should be small enough in order to satisfy the accuracy of integration. In this letter, this integration is interpreted as a Radon transform, on the basis of which an exact closed-form expression is obtained. The accuracy of the derived closed-form expression is not dependent on the length of the integration line of interest. Hence, the need for subdivision can be eliminated for any straight diffracting edge. Some numerical examples are provided to demonstrate the validity and applicability of the proposed approach .
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	1247
Ending Page	1250
Page Count	4
File Size	645255
File Format	PDF
ISSN	15361225
Volume Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transforms Time domain analysis Closed-form solutions Accuracy Antennas Electric fields Transient analysis time-domain equivalent edge currents (TDEEC) Contour integral Radon transform time-domain diffracted field
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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