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Array antenna calibration apparatus and method

  • US 20060273959A1
  • Filed: 08/24/2005
  • Published: 12/07/2006
  • Est. Priority Date: 05/19/2005
  • Status: Active Grant
First Claim
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1. An array antenna calibration apparatus for calibrating an array antenna having multiple antenna elements, said apparatus comprising:

  • calibration signal supply means which supplies calibration signals to a plurality of antenna elements that are to be subjected to calibration;

    calibration signal extracting means which extracts the calibration signals from signals received by the antenna elements placed, one on each side of the plurality of antenna elements that are to be subjected to calibration, and calibration control means which individually controls the phases of signals to be transmitted from the plurality of antenna elements that are to be subjected to calibration, based on the phase differences among the calibration signals extracted by said calibration signal extracting means.

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