NDLI: UTD Vertex Diffraction Coefficient for the Scattering by Perfectly Conducting Faceted Structures

Content Provider	IEEE Xplore Digital Library
Author	Albani, M. Capolino, F. Carluccio, G. Maci, S.
Copyright Year	1963
Abstract	A uniform high-frequency description is presented for vertex (tip) diffraction at the tip of a pyramid, for source and observation points at finite distance from the tip. This provides an effective engineering tool able to describe the field scattered by a perfectly conducting faceted structure made by interconnected flat plates within a uniform theory of diffraction (UTD) framework. Despite the adopted approximation, the proposed closed form expression for the vertex diffracted ray is able to compensate for the discontinuities of the field predicted by standard UTD, i.e., geometrical optics combined with the UTD wedge diffracted rays. The present formulation leads to a uniform first order asymptotic field in all the transition regions of the tip diffracted field. The final analytical expression is cast in a UTD framework by introducing appropriate transition functions containing generalized Fresnel integrals. The effectiveness and accuracy of the solution is checked both through analytical limits and by comparison with numerical results provided by a full wave method of moments analysis.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	3911
Ending Page	3925
Page Count	15
File Size	1210667
File Format	PDF
ISSN	0018926X
Volume Number	57
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical scattering Optical diffraction Brillouin scattering Electromagnetic scattering Radar scattering Physical theory of diffraction Geometrical optics Electromagnetic diffraction Radar cross section Optical surface waves vertex diffraction Asymptotic diffraction theory geometrical theory of diffraction radar cross section (RCS) scattering uniform theory of diffraction (UTD)
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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