An antenna system (102) for receiving and transmitting radio frequency (RF) signals within a plurality of predetermined RF bands includes a ground leg (202), a feed leg (206), one or more capacitive patches (212) and one or more switching devices (214). The feed leg (206) is coupled to the ground leg...http://www.google.fr/patents/US7477196?utm_source=gb-gplus-shareBrevet US7477196 - Switched capacitive patch for radio frequency antennas
Switched capacitive patch for radio frequency antennas
