Coherent phase and frequency recovery method and circuit

Details Coherent phase and frequency recovery method and circuit Coherent phase and frequency recovery method and circuit

1989-10-03

1991-01-22

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural a.f.s. for a single oscillator

331 11, 331 14, 331 17, 331 25, H03L 7085

Patent

active

049873865

ABSTRACT:
A coherent phase and frequency recovery method capable of rapidly recovering the phase and frequency of bursts of received signals from plural sources. The received signal is applied to a first input of a mixer, the output of which is amplified and applied to two feedback paths, one for frequency and the other for phase. The frequency path contains a loop filter driving a voltage-controlled oscillator, and the phase path a loop filter and amplifier. Initial estimates of the phase and frequency of the present burst are derived and injected into the respective feedback paths. The output of the phase path is applied to correct the phase of the output of the frequency path, which is then applied to a second input of the mixer.

REFERENCES:
patent: 3878334 (1975-04-01), Halpern
patent: 4017798 (1977-04-01), Gordy et al.
patent: 4308505 (1981-12-01), Messerschmitt
patent: 4409562 (1983-10-01), Kurihara
patent: 4456890 (1984-06-01), Carickhoff
patent: 4475211 (1984-10-01), Mattis, Jr. et al.
patent: 4561099 (1985-12-01), Atsugi et al.
patent: 4585998 (1986-04-01), Viellard
patent: 4594727 (1986-06-01), Pierce
patent: 4612515 (1986-09-01), Ohkawa et al.
patent: 4621366 (1986-11-01), Cain et al.
patent: 4628507 (1986-12-01), Otani
patent: 4871975 (1989-10-01), Nawata et al.

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