Input impedance of inclined printed slot antennas and inclined-slot-coupled dielectric resonator antennas

Abstract

As an example, the dual-reflector antennas of spheroidal wave function distribution and uniform distribution have been used. For spheroidal wave function distribution, we have obtained transmission efficiency of nearly 95%, whereas for the uniform distribution, only 80% has been obtained. CONCLUSIONPrinciples of geometrical optics are used to design dualreflector antennas with nonuniform amplitude and phase distributions, which can achieve maximum power transfer. Such antenna systems have value in the field of materials metrology, especially for dielectric measurements, and where maximum power transfer is required. ABSTRACT The theoretical approach based on a combination of the reciprocity theorem and a moment-method calculation has been applied in the analysis of an inclined printed slot antenna and an inclined-slot-coupled dielectric resonator antenna. The input impedance of the antenna is formulated and calculated. The obtained theoretical results are found to be in good agreement with the experimental data. This theoretical method is good for solving the inclined printed slot and inclined-slot related problems. 0 1996 John W i l e y ABSTRACT The purpose of this communication is to discuss the effect of the mutual coupling between element arrays on the radiation pattern, and to compensate for this effect in introducing them into a power far-jield pattern synthesis array. The synthesized pattern is an optimum approximation to the prescribed power pattern in the minmax sense. A study is realized for shaped seciarian and cosecant beams. 0 1996 John Wiley & Sons, Inc.