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Cellular base station antennas using microstrip antenna technology

A line of base station antenna products using microstrip technology has been developed for use in cellular communications. The antennas operate In the 800–900 MHz range. The main product is a half cylinder three beam radome enclosed antenna. There are three microstrip planar array panels within the half cylindrical radome. Each microstrip planar array panel illuminates one 60∗ sector and all three panels fit into the half cylindrical structure to provide RF coverage over 180°. An electro-mechanical down tilt actuator has also been designed into the structure to provide individual remote elevation adjustment to each panel. The antenna is in use in Bell Cellular's network today. Its aesthetics and performance improvements in operations and maintenance have proven to be a big advantage in densely populated urban and suburban areas. This paper describes the design, implementation and application of the antennas.