MULTIPLE-BEAM MULTI-MISSION BROADBAND REFLECTOR OF LENS ANTENNA

This study will investigate the feasibility and complexity involved with the development of a shaped parabolic reflector antenna system for the formation of multiple simultaneous azimuth beams for use in a high rate (300MHz) data transmission system for the U.S. Navy. Each antenna system will form multiple simultaneous beams within a 90 degress azimuth coverage area over a 2:1 frequency bandwidth. Elevation coverage will be obtained from pedestal rotation for gross adjustments and beam dither/multiple beams for near boresight elevation agility. Four such systems will be used to provide a full 360 azimuth coverage about the ship. The proposed study will concentrate on the design and analysis of the components required to fulfill the mission objectives including a broadband multi-beam phase array feed with a rotman lens beam forming network and a shaped reflector surface for optimum performance. The study will also recommend a proposed course of investigation for a Phase II demonstration of the concept performance through measurements and detailed analytical processes.