Title :
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
fDate :
8/1/1990 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
