Parallel phase-locked loop oscillator circuits with average freq

Details Parallel phase-locked loop oscillator circuits with average freq Parallel phase-locked loop oscillator circuits with average freq

1994-01-31

1996-07-09

Pascal, Robert

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

331 1A, 331 11, 375376, 327147, 327151, H03L 7087

Patent

active

055348220

ABSTRACT:
A phase-locked oscillator circuit with a broad pull-in frequency range generates a stable output signal synchronized to the phase of an input signal. An input-stage phase-locking circuit wherein the phase of a first frequency-converted output signal from a 1st frequency-conversion section is compared by a 1st phase-comparison circuit with the phase of the input signal and the phase of the 1st frequency-converted output signal is controlled. A processing section determines the frequency component of the input signal based on the phase-comparison output signal from the 1st phase-comparison circuit. An output-stage phase-locking circuit compares the phase of a 2nd frequency-conversion section with the phase of the input signal in a 2nd phase-comparison circuit. The phase of the 2nd frequency-conversion section is controlled based on the resulting phase-comparison output signal and the phase comparison output signal from the 1st phase-comparison circuit. Thus, the phase of the 2nd frequency-converted output signal is controlled.

REFERENCES:
patent: 3626426 (1971-12-01), Steinberg
patent: 4066978 (1978-01-01), Cox, Jr. et al.
patent: 4438412 (1984-03-01), Malinowski et al.
patent: 4500851 (1985-02-01), Sawa et al.
patent: 4531102 (1985-07-01), Whitlock et al.
patent: 4633193 (1986-12-01), Scordo
patent: 4654604 (1987-03-01), Smith et al.
patent: 4896337 (1990-01-01), Bushy, Jr.
patent: 5075639 (1991-12-01), Taya
patent: 5144254 (1992-09-01), Wilke
patent: 5194828 (1993-03-01), Kato et al.
patent: 5216387 (1993-01-01), Telewski et al.
patent: 5319680 (1994-06-01), Port et al.
Takashi Inoue et al., "Interference Suppression Using DPLL with Notch Frequency Characteristic", Electronics and Communications in Japan, Part I, vol. 73, No. 4, Apr. 1990, pp. 48-55.

Affiliated with

Also associated with

Rating

Parallel phase-locked loop oscillator circuits with average freq does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Parallel phase-locked loop oscillator circuits with average freq, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parallel phase-locked loop oscillator circuits with average freq will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1869873