Incremental length diffraction coefficients for an impedance wedge

Author

Pelosi, Giuseppe ; Maci, Stefano ; Tiberio, Roberto ; Michaeli, Arie

Author_Institution

Dept. of Electron. Eng., Florence Univ., Italy

Volume

40

Issue

10

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

1201

Lastpage

1210

Abstract

An incremental length diffraction coefficient (ILDC) formulation is presented for the canonical problem of a locally tangent wedge with surface impedance boundary conditions on its faces. The resulting expressions are deduced in a rigorous fashion from a Sommerfeld spectral integral representation of the exact solution for the canonical wedge problem. The ILDC solution is cast into a convenient matrix form which is very simply related to the familiar geometrical theory of diffraction (GTD) expressions for the field on the Keller cone. The scattered field is decomposed into physical optics, surface wave, and fringe contributions. Most of the analysis is concerned with the fringe components; however, the particular features of the various contributions are discussed in detail

Keywords

boundary-value problems; electromagnetic wave diffraction; electromagnetic wave scattering; physical optics; Keller cone; PO contribution; Sommerfeld spectral integral representation; canonical problem; fringe contributions; impedance wedge; incremental length diffraction coefficient; locally tangent wedge; matrix form; physical optics; scattered field; surface impedance boundary conditions; surface wave contributions; Boundary conditions; Matrix decomposition; Optical scattering; Optical surface waves; Physical optics; Physical theory of diffraction; Power engineering and energy; Surface impedance; Surface treatment; Surface waves;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.182452

Filename

182452