Microwave Fresnel Zone Plates with Non-Uniform Aperture Excitation

Abstract

A theoretical study of the variation of relative field amplitude with axial distance has been made for a plane and a spherical microwave zone plate with an incident plane wave front having non-uniform aperture excitation distribution. The results show a sharper focussing property for the non-uniform excitation.

Indexing Terms:

• Fresnel Zone Plates
• Non-Uniform Aperture Excitation