An antenna system which is capable of having omnidirectional transmitting and receiving capabilities is disclosed. The antenna system includes a plurality of directional antennas coupled to a transceiver, wherein the antennas are configured to have their main lobes extend in different directions. In...http://www.google.es/patents/US7263386?utm_source=gb-gplus-sharePatente US7263386 - High gain omnidirectional antenna and related method
High gain omnidirectional antenna and related method