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Phase array calibration orthogonal phase sequence

  • US 5,861,843 A
  • Filed: 12/23/1997
  • Issued: 01/19/1999
  • Est. Priority Date: 12/23/1997
  • Status: Expired due to Fees
First Claim
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1. A method of calibrating an array antenna element having a signal with a phase and an amplitude, the method comprising:

  • sequentially switching the phase of the antenna element signal through four orthogonal phase states;

    measuring the power of the array antenna signal at each of the four orthogonal phase states;

    determining a phase error for the antenna element signal as a function of the power of the array antenna signal at each of the four orthogonal phase states; and

    adjusting the phase of the antenna element signal by the phase error.

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