Continuously-synchronized tracking receiver for a priori defined

Details Continuously-synchronized tracking receiver for a priori defined Continuously-synchronized tracking receiver for a priori defined

1977-04-22

1979-05-01

Griffin, Robert L.

Oscillators

Relaxation oscillators

331 18, 329124, 325336, H03D 306

Patent

active

041526503

ABSTRACT:
A receiver for a carrier that is swept in frequency in a predetermined manner over a bandwidth comprises frequency tracking with continuous self-synchronization. The frequency tracking permits the carrier to be filtered by a narrowband filter. The filtered carrier is then fed to a frequency discriminator to produce an error signal. A highly-selective phase-locked loop synchronizes only to the desired component of the error signal in frequency and in phase. The output of the phase-locked loop, after appropriate shaping, is the control signal for tracking synchronously the incoming wave. The output data are obtained at detection after the narrowband filtering.

REFERENCES:
patent: 3238460 (1966-03-01), Enloe
patent: 3265986 (1966-08-01), Wychoff
patent: 3906380 (1975-09-01), Querry et al.

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