Receiver for FFSK modulated data signals

Details Receiver for FFSK modulated data signals Receiver for FFSK modulated data signals

1982-08-23

1985-12-24

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 82, 375 88, 329126, 307522, H04B 116, H03D 300

Patent

active

045610983

ABSTRACT:
A receiver for FFSK modulated signals operating in the time domain so as to effect a rapid acquisition of the data signal and the generated clock signal and to maintain the synchronization irrespective of the data pattern. For that purpose the receiver comprises a zero-crossing detector and a window generator for selecting by means of this window generator from the zero-crossings detected by the zero crossing detector two consecutive zero-crossings of the lower frequency of the two signal frequencies of the FFSK signal for sychronization of the regenerated clock signal.

REFERENCES:
patent: 3437932 (1969-04-01), Malakoff
patent: 4287596 (1981-09-01), Chari
patent: 4344039 (1982-08-01), Sugiura et al.
patent: 4447909 (1984-05-01), Hjorring
Graf, Modern Dictionary of Electronics, 1977, p. 297.

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