Frequency-stabilizing system for generator of microwave oscillat

Details Frequency-stabilizing system for generator of microwave oscillat Frequency-stabilizing system for generator of microwave oscillat

1980-04-22

1982-10-19

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural a.f.s. for a single oscillator

331 14, 331 17, 331 26, 332 19, H03L 708

Patent

active

043552889

ABSTRACT:
A carrier oscillation in the microwave range is stabilized by a sequence of timing pulses produced by a crystal-controlled reference oscillator whose cadence is an aliquot fraction of the nominal carrier frequency. The pulses are used to obtain two phase-representing amplitude samples of the carrier wave from a pair of mutually phase-shifted pilot oscillations of the same frequency in each of a succession of nonconsecutive cycles thereof; a control voltage derived from these amplitude samples is fed back to the microwave oscillator via a frequency-correcting or phase-locking loop.

REFERENCES:
patent: 3321712 (1967-05-01), Frisch et al.
patent: 3456196 (1969-07-01), Schneider
patent: 3789316 (1974-01-01), Goetz et al.
patent: 3886472 (1975-05-01), Cottatellucci
patent: 4156204 (1979-05-01), Hargis

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