An antenna for a base station comprising a plurality of antenna arrays (40; FIG. 6a) each capable of forming a multiplicity of separate overlapping narrow beams in azimuth, the arrays being positioned such that the beams formed by the arrays provide a coverage in azimuth wider than each array. Means...http://www.google.co.uk/patents/US5565873?utm_source=gb-gplus-sharePatent US5565873 - Base station antenna arrangement
