The surface impedance of metallic objects: rigorous calculations for imperfectly conducting diffraction gratings

Author

Depine, Ricardo A. ; Brudny, Vera L.

Author_Institution

Dept. of Phys., Buenos Aires Univ., Argentina

Volume

38

Issue

8

fYear

1990

fDate

8/1/1990 12:00:00 AM

Firstpage

1290

Lastpage

1294

Abstract

An accurate computation of the surface impedance of highly conducting metallic gratings is presented. A rigorous electromagnetic formalism is used for solving for the fields at the grating boundary. The influence of the local curvature of the grating profile, the refractive index of the metal, and the angle of incidence are studied. Particular attention is given to the comparison between the efficiencies obtained using the rigorous method and those obtained assuming that the surface impedance is a constant

Keywords

diffraction gratings; electric impedance; electromagnetic wave diffraction; electromagnetic wave scattering; angle of incidence; electromagnetic scattering; grating profile; highly conducting metallic gratings; imperfectly conducting diffraction gratings; local curvature; metallic objects; refractive index; rigorous electromagnetic formalism; surface impedance; Antennas and propagation; Diffraction gratings; Frequency; Inverse problems; Microwave propagation; Shape; Submillimeter wave propagation; Sun; Surface impedance; Temperature distribution;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.56969

Filename

56969