Clock phase detector

Details Clock phase detector Clock phase detector

H - Electricity

04

L

329/3

H04L 27/06 (2006.01) H04L 27/227 (2006.01)

Patent

CA 1329240

ABSTRACT The invention relates to a clock phase detector for clock pulse synchronization in a receiver for synchronous data transmission. The timing error detector receives, as the demodulated received signal, the in-phase component and the quadrature component from the product of the received signal with the output signal of the carrier oscillator, with these components being low-pass filtered so that the signal terms of the double frequency are suppressed. The output signal serves as control signal uTI for the clock pulse generator. The timing error detector includes two bandpass filters fed with the demodulated received signal and a linkage circuit which generates the control signal from the complex bandpass output signals. The detector is characterized in that a further linkage circuit VF is provided which generates a control signal Uf to control the frequency of the carrier oscillator from the complex output values of bandpass filters BP + (Figure 4).

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