The present invention relates to a radio communications base station antenna. In a first embodiment, the arrangement comprises a plurality of antennas each capable of forming a separate narrow beam in azimuth, wherein the antennas are positioned such that the beams formed by the antennas overlap and...http://www.google.fr/patents/US5966094?utm_source=gb-gplus-shareBrevet US5966094 - Base station antenna arrangement
