Patent ID: RE43131

Claim:
A carrier tracking circuit, comprising: a first phase adjustment circuit having a phase adjustment input, an input sample input, and an output; a delay element having an input coupled to the output of the first phase adjustment circuit and having an output; a second phase adjustment circuit having a component input coupled to the output of the delay element, a phase adjustment input, and an output; a phase correction circuit having an input coupled to the output of the second phase adjustment circuit and a first output coupled to the phase adjustment input of the first phase adjustment circuit, the phase correction circuit including a double phase correction circuit having an input coupled to the first output and having a second output coupled to the phase adjustment input of the second phase adjustment circuit; and a feed forward phase correction circuit having a first control input adapted to receive a feed forward scale factor signal and a second control input coupled to the first output of the phase correction circuit, and having a component input coupled to the output of the second phase adjustment circuit.