A review of mm-wave and submm-wave antenna and lens developments using Fresnel diffraction theory

We present in this paper a review of possible applications of millimeter and sub-millimeter wave Fresnel zone reflectors and lenses those have been performed by working groups at Russia. The aim of this paper is to show that this antenna and lenses concept can be a good alternative to improve electrical and mechanical performance of prototypes, reducing design and manufacturing time and cost.