Direction finding in the cellular land mobile radio environment

A multiple beam adaptive base-station antenna has been proposed by the authors. The direction finding capabilities of an antenna array form an integral part of the proposed scheme, and so in the paper the ability to determine the azimuth direction of a mobile signal source in a `city centre´ type environment is demonstrated using a four element base-station antenna array. The results show that the close proximity of local scatterers around the mobile reduces the angular spread of the transmitted signal, thus providing credence for this new approach to base-station antenna system design