Edge-wave diffraction for flat-plate structures

Author

Ivrissimtzis, Leonidas P. ; Marhefka, R.J.

Author_Institution

Sch. of Electron. & Electr. Eng., Birmingham Univ., UK

Volume

141

Issue

1

fYear

1994

fDate

2/1/1994 12:00:00 AM

Firstpage

30

Lastpage

36

Abstract

An engineering approximation of the edge-guided wave contribution to radar cross-section (RCS) calculations is investigated. A dyadic diffraction coefficient is extrapolated from the representation of the edge-wave diffraction mechanisms associated with a dipole radiating in the close vicinity of the edge of a trihedron. The edge wave excited by the tip of a vertex and guided along an edge is derived from reciprocity. The rediffraction of the edge-guided fields is evaluated via multiplication with the proper edge-wave vertex diffraction coefficient. RCS calculations and time-domain extraction techniques are employed to assess and validate edge-wave diffractions from a flat plate, in comparison with method of moments computations and measured data

Keywords

approximation theory; electromagnetic wave diffraction; extrapolation; radar cross-sections; RCS calculations; dipole; dyadic diffraction coefficient; edge-wave diffraction; edge-wave vertex diffraction coefficient; electromagnetic diffraction; engineering approximation; flat-plate structures; numerical results; radar cross-section; reciprocity; time-domain extraction techniques; trihedron;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19949764

Filename

278086