Radio receiver

Details Radio receiver Radio receiver

H - Electricity

04

L

325/87

H04L 27/22 (2006.01) H04L 1/00 (2006.01) H04L 27/227 (2006.01) H04L 27/38 (2006.01)

Patent

CA 1266706

ABSTRACT OF THE DISCLOSURE The present invention realizes, in a radio receiver which utilizes a sweep track type phase lock circuit, stable demo- dulation by effectively deciding start and stop of the sweep on the basis of the decoded code error. The radio receiver includes a demodulator which provides a demodulated digital signal and a phase error signal. A signal processor acts on the demodulated digital signal and outputs error information which is applied to a circuit which detects whether false lock is present in which case a sweep signal generator outputs a sweep signal. The sweep signal and the phase error signal are summed and passed to a voltage controlled oscillator which recovers the carrier signal.

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