Patent ID: 6657595
Filing Date: 2003-12-02
Classification: H01Q

Abstract:
An adaptive antenna system for a communication device having a transceiver disposed within a housing, the system comprising:an antenna being electrically coupled to the transceiver; at least one conductor counterpoise to the antenna, the at least one counterpoise conductor being contained within the housing and located distally from such surfaces of the housing that can be held by or placed in proximity to a user; a second conductor coupled to a ground connection of the antenna and being contained within the housing; a tuning circuit coupled between the at least one counterpoise conductor and the second conductor, the tuning circuit is operable to adapt the resonant frequency of the at least one counterpoise conductor to attract operational RF currents onto the at least one counterpoise conductor and divest operational RF currents away from the second conductor; and a controller, the controller controlling the operation of the tuning circuit in response to inputs indicating the proximity of the user.