Title :
A beam-splitting reflection grating
Author :
Uslenghi, Piergiorgio L E
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Chicago, IL, USA
fDate :
9/1/2002 12:00:00 AM
Abstract :
A metallic grating made of triangular grooves filled with penetrable material is considered. A plane wave normally incident and polarized perpendicular to the grooves produces three plane waves, one backreflected and two obliquely reflected, for certain ratios between groove dimensions and wavelength. This geometrical optics solution is exact. In particular, if the material filling the grooves is isorefractive to the surrounding medium, then the backreflected field is zero.
Keywords :
boundary-value problems; electromagnetic wave reflection; electromagnetic wave transmission; geometrical optics; backreflected waves; beam-splitting reflection grating; geometrical optics solution; groove dimensions; metallic grating; obliquely reflected waves; penetrable material; plane wave; triangular grooves; wavelength; Dielectric losses; Electromagnetic scattering; Fractals; Gratings; Optical reflection; Optical scattering; Optical surface waves; Rough surfaces; Surface roughness; Surface waves;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.802076
