Design of a dual reflector antenna with shaped-omnidirectional pattern

Abstract

In this paper, a new concept to obtain an azimuthal shaping of an omnidirectional antenna pattern for mm-waves will be presented. Previous papers have shown that a dual reflector antenna with parabolic subreflector, conical main reflector and a suitable feed pattern and excitation exhibits a linearly polarized omnidirectional pattern; here the conical main reflector is modified in its azimuthal profile in order to produce a non uniform power distribution in azimuth.