Patent ID: 6415140
Filing Date: 2002-07-02
Classification: H01Q

Abstract:
A space diversity antenna system operating at a predetermined block rate, comprising:a first antenna; a second antenna spaced from said first antenna; a source of signals to be radiated from said first and second antennas; circuitry using signals received by said first and second antennas; a transceiver coupled to said source, said circuitry, said first antenna and said second antenna, said transceiver adapted to split and route signals from said source to said first and second antennas and to combine and route signals from said first and second antennas to said circuitry; and dither circuitry interposed in the signal path between said transceiver and one of said first and second antennas, said dither circuitry arranged to alternately insert and remove a circuit element in the signal path at a submultiple of the block rate, wherein the circuit element is selected from the group consisting of an amplitude attenuator and a phase changer.