2009•European Conference on Antennas and PropagationRequires access

Omnidirectional dual-reflector antenna with a GO shaped main reflector for an arbitrary far-field pattern in the elevation plane

S. R. Zang, J.R. Bergmann, Fernando J. S. Moreira

Abstract

This work presents a formulation for shaping the main reflector of a dual reflector antenna designed to offer an omnidirectional coverage with an arbitrary radiation pattern in the vertical plane. The subreflector is generated by an axis-displaced ellipse and the main reflector is shaped to achieve a prescribed far-field radiation pattern. The shaping procedure is based on geometrical optics (GO) principles. The GO shaping results are validated by analysis provided by the accurate method of moments technique.

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Available abstract

Key concepts: Omnidirectional antenna, Reflector (photography), Radiation pattern, Ellipse, Optics, Periscope antenna, Cassegrain antenna, Elevation (ballistics)