Patent ID: 6121933
Filing Date: 2000-09-19
Classification: H01Q,H04B

Abstract:
An antenna system comprising:a plurality of antennas, each of said plurality of antennas outputting a radio frequency signal, each of said radio frequency signals having a power associated therewith, each of said plurality of antennas receiving said radio frequency signal from a source, said source being located in a near field region of at least one of said plurality of antennas, said source being located a variable distance from at least one of said plurality of antennas;a detection circuit, the detection circuit being responsive to said radio frequency signals output from said plurality of antennas, said detection circuit outputting a control signal, said control signal being representative of which of said radio frequency signals has a greatest power; andan output circuit, said output circuit being responsive to said control signal, said output circuit outputting said radio frequency signal having said greatest power in response to said control signal, thereby increasing an immunity to said variable distance between said source and said at least one of said plurality of antennas.