MILLIMETER-WAVE TWIST REFLECTOR DESIGN ASPECTS

Millimeter wave twist reflector design procedure is described. Effective dielectric constant for capacitive susceptance correction for a unidirectional planar grating at the interface of free space and dielectric material in the twist reflector environment is introduced. The loss factor of the dielectric material has been accounted for the prediction of twist reflector performance. With the introduction of these corrections experimental results are found to be in close agreement with the theory. Normalized curves for the design of twist reflector in terms of grating parameters, dielectric substrate relative permitivity and dielectric material thickness are presented. Experimental results are given for millimeter wave twist reflector.