Phase correction circuit

Details Phase correction circuit Phase correction circuit

H - Electricity

03

L

328/28

H03L 7/08 (2006.01)

Patent

CA 1126349

Abstract A circuit for regenerating the carrier from a PSK signal is dis- closed. The circuit has a first and a second output point, having different equivalent noise bandwidths determined, respectively by using broad equiva- lent noise bandwidth filter and a narrow equivalent noise bandwidth. The phase difference between the output points is detected by a phase detector, and the phase of the signal at the first output point is changed by a phase shifter on the basis of the result of such phase difference detected. In this way the signal obtained at the first output point which has a good transient response is used as the output signal and when this signal exhibits phase-skipping the phase skipping is removed. In addition, either channel switching or polarity inversion of the demodulated baseband signal may be performed on the basis of the result of such phase difference.

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