A conventional antenna 114 at a cell site of a sectored cell in a cellular radio communications system has a low angle of coverage in elevation and therefore has low gain for close-in subscriber units (near the cell site). In a sectored cell, a main beam antenna in a first sector generates sidelobes...http://www.google.com.au/patents/US6311075?utm_source=gb-gplus-sharePatent US6311075 - Antenna and antenna operation method for a cellular radio communications system
