A monopole antenna is disclosed. The monopole antenna comprises a base board, a first substantially L-shaped conductor, a first ground plane, a second substantially L-shaped conductor, a second ground plane and a feeding strip, and the monopole antenna further has a plurality of evenly-distributed through...http://www.google.co.uk/patents/US7183981?utm_source=gb-gplus-sharePatent US7183981 - Monopole antenna