Patent ID: 7764237
Filing Date: 2010-07-27
Classification: H01Q

Abstract:
1. A mobile telephone comprising a first antenna operating in at least a first bandwidth, the first antenna being disposed at a first end of the mobile telephone, and a second antenna operating in at least a second bandwidth, the second antenna being disposed at a distal end of the mobile telephone, wherein frequencies within the first bandwidth are greater than frequencies in the second bandwidth, further comprising a transceiver coupled to a first passive transmission line and a second passive transmission line, wherein the first antenna is coupled to the first transmission line and the second antenna is coupled to the second transmission line, each of the first antenna and the second antenna having associated therewith a nominal impedance and a plurality of loaded impedances, the plurality of loaded impedances being determined by a placement of a user's hands about the mobile telephone, wherein when one of the first antenna or the second antenna becomes loaded, the first passive transmission line and the second passive transmission line become mismatched, thereby causing power transmission from the transceiver to passively be directed to a lesser loaded antenna of the first antenna and the second antenna as a function of the placement of the user's hands about the mobile telephone.