Design Analysis of Omnidirectional Single Reflector Antennas Synthesized for a Cosecant Squared Coverage in Elevation Plane

Abstract

This work explores a Geometrical Optics based procedure to design axis-symmetric single reflector antenna to offer omnidirectional coverage with an arbitrary radiation pattern in the elevation plane. The reflector surface is bodie-of-revolution generated from a shaped generatrix locally described by a set of local conic sections consecutively concatenated. To illustrate the method, a reflector surface illuminated by a TEM coaxial horn was designed to radiate a co-secant squared radiation pattern.