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Array antenna calibration apparatus and method

  • US 7,545,321 B2
  • Filed: 08/24/2005
  • Issued: 06/09/2009
  • Est. Priority Date: 05/19/2005
  • Status: Expired due to Fees
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 detecting means which detects the calibration signals from signals transmitted by each of the plurality of antenna elements that are to be subjected to calibration and received by each calibrating antenna elements placed, one on each side of the plurality of antenna elements that are to be subjected to calibration, andcalibration control means which individually controls the phases of signals to be transmitted from each of the plurality of antenna elements that are to be subjected to calibration, based on the phase differences among the calibration signals detected by said calibration signal detecting means.

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