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Phased array antenna including a distributed phase calibrator and associated method

  • US 6,975,268 B2
  • Filed: 02/26/2004
  • Issued: 12/13/2005
  • Est. Priority Date: 02/26/2004
  • Status: Expired due to Fees
First Claim
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1. A phased array antenna comprising:

  • a plurality of antenna radiating elements;

    a transmission line network connected to the plurality of antenna radiating elements and including a plurality of taps;

    a reference signal generator connected to the transmission line network to provide a reference frequency signal to each of the plurality of antenna radiating elements; and

    a phase calibrator to generate a calibration signal on the transmission line network, the calibration signal being reflected at the reference signal generator to create a reflected calibration signal on the transmission line network, to determine a frequency difference between the calibration signal and the reflected calibration signal at each of the plurality of taps, and to output a delay measurement signal to the antenna radiating elements for adjusting a phase of the reference frequency signal.

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