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Phase tracking network

  • US 3,971,996 A
  • Filed: 02/10/1975
  • Issued: 07/27/1976
  • Est. Priority Date: 01/18/1973
  • Status: Expired due to Term
First Claim
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1. A phase tracking network for correcting the phase of a noncoherently demodulated signal comprising:

  • a phase correction network having an inphase channel and a quadrature channel and adapted to receive at least a first portion of the noncoherently demodulated signal in the inphase channel and a second portion of the noncoherently demodulated signal in the quadrature channel, the phase correction network including means for substantially correcting the phase of the noncoherently demodulated signal to provide at least one phase corrected signal in both of said channels;

    first means responsive to the phase corrected signal to provide at least one detected data signal;

    second means responsive to at least one of the detected data signal and the phase corrected signal to provide a phase correction signal; and

    said correcting means being responsive to the phase correction signal to make a correction to the phase of the noncoherently demodulated signal.

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