Frequency synthesizer for broadcast telephone system having mult

Details Frequency synthesizer for broadcast telephone system having mult Frequency synthesizer for broadcast telephone system having mult

1986-03-18

1988-11-15

LaRoche, Eugene R.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

331 25, H03L 700

Patent

active

047852607

ABSTRACT:
In a broadcast telephone system for communicating information signals over an assigned frequency channel, the combination of a synthesizer for generating a signal at the assigned frequency and a PROM storing a plurality of sets of first and second signals associated with different predetermined assignable frequencies. The synthesizer includes a first phase-locked loop for generating an output signal at a frequency within a first predetermined range including the plurality of assignable frequencies in response to the combination of a first frequency reference signal having a predetermined frequency and a second reference frequency signal having a frequency within a second predetermined range and derived from a second phase-locked loop a second phase-locked loop for generating a third reference frequency signal within a third predetermined range in response to a combination of a first signal from the PROM associated with a given assignable frequency and a fourth frequency reference signal having a predetermined frequency; and a frequency divider coupled to the PROM for dividing the frequency of the output signal from the second phase-locked loop by an amount indicated by a second signal from the PROM associated with said given assignable frequency to provide the second reference signal to the first phase-locked loop. The phase-locked loops each include a minimizing phase noise and electronic noise due to microphonics.

REFERENCES:
patent: 3546617 (1970-12-01), Westwood

Affiliated with

Also associated with

Rating

Frequency synthesizer for broadcast telephone system having mult does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency synthesizer for broadcast telephone system having mult, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency synthesizer for broadcast telephone system having mult will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1105595