SWITCHED CAPACITIVE PATCH FOR RADIO FREQUENCY ANTENNAS

摘要

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 ( 202 ) at one portion thereof. Each of the one or more switching devices ( 214 ) is associated with one capacitive patch ( 212 ) and selectably couples its associated capacitive patch ( 212 ) to a ground plane ( 204 ) in order to receive and transmit RF signals within an associated predetermined RF band.