Patent ID: 8098769

Claim:
A method for recovering a carrier for a synchronous demodulator, comprising: mixing an input signal and a carrier signal in order to generate a mixed signal that includes in-phase and quadrature signal components; phase detecting the in-phase and quadrature signal components to provide a control signal indicative of a phase difference signal value; generating the carrier signal in response to the control signal; filtering the control signal to provide a filtered control signal; and time delaying the mixed signal by a time value indicative of a propagation delay associated with the steps of phase detecting and filtering to provide a time delayed mixed signal; interpolating the filtered control signal for an employed sampling rate before application of a phase correction where there is a control action during reconstruction of the carrier signal; and phase correcting the time delayed mixed signal utilizing the filtered control signal to correct a residual phase error of the mixed signal and provide a phase corrected mixed signal; where the mixing, the phase detecting, the generating, the time delaying and the phase correcting are performed by a signal processing device.