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Method and system for steering antenna beam

  • US 20070135167A1
  • Filed: 12/08/2005
  • Published: 06/14/2007
  • Est. Priority Date: 12/08/2005
  • Status: Active Grant
First Claim
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1. A hybrid wireless network system for steering antenna beams, comprising:

  • an antenna array, receiving at least two RF signals;

    an analog subsystem comprising;

    a step leveling device coupling to the antenna array;

    a magic-Tee coupler connected to the step leveling device for calculating a difference signal and a sum signal based on the two RF signals; and

    a phase-sensing comparator for calculating a polarity data based on the comparison of the difference signal and the sum signal; and

    a digital subsystem comprising a transceiver and a receiver, estimating a direction-of-arrival (DOA) based on the difference signal and the polarity data, and generating weights based on the DOA; and

    wherein the step-leveling device receive the weights from the digital subsystem, in form of a feedback control, to apply the weights on the two RF signals respectively;

    wherein the digital subsystem repetitively calculates new weights to update a beam pattern of the antenna array until the DOA approaches null.

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