The diffraction of an inhomogeneous plane wave by an impedance wedge in a lossy medium

Author

Manara, Giuliano ; Nepa, Paolo ; Kouyoumjian, Robert G. ; Taute, Barendt J E

Author_Institution

Dept. of Inf. Eng., Pisa Univ., Italy

Volume

46

Issue

11

fYear

1998

fDate

11/1/1998 12:00:00 AM

Firstpage

1753

Lastpage

1755

Abstract

The diffraction of an inhomogeneous plane wave by an impedance wedge embedded in a lossy medium is analyzed. The rigorous integral representation for the field is asymptotically evaluated in the context of the uniform geometrical theory of diffraction (UTD) so that the asymptotic expressions obtained can be employed in a ray analysis of the scattering from more complex edge geometries located in a dissipative medium. Surface wave excitations at the edge and their propagation along the wedge faces are discussed with particular emphasis on the effects of losses

Keywords

absorbing media; electromagnetic wave diffraction; electromagnetic wave scattering; geometrical theory of diffraction; integration; UTD; asymptotic expressions; complex edge geometries; dissipative medium; electromagnetic scattering; impedance wedge; inhomogeneous plane wave diffraction; losses; lossy medium; ray analysis; rigorous integral representation; surface wave excitations; uniform geometrical theory of diffraction; Costs; Electromagnetic analysis; Electromagnetic scattering; Geometry; Guidelines; Impedance; Microwave theory and techniques; Notice of Violation; Physical theory of diffraction; Physics computing;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.736640

Filename

736640