Rapid scanning radio with multi-mode local oscillator control

Details Rapid scanning radio with multi-mode local oscillator control Rapid scanning radio with multi-mode local oscillator control

1988-04-01

1990-06-05

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455165, 455164, 455183, H04B 116

Patent

active

049320742

ABSTRACT:
A rapid scanning radio with multi-mode local oscillator control. In one embodiment a phase-locked loop is closed for tuning to all frequencies of interest, and each time the loop locks a DAC is loaded with successive digital values until a value corresponding to the steady-state VCO tuning voltage is found for the currently tuned channel. That digital value is stored for later recall as the tuning value for that channel. Once digital values are determined for all the tunable frequencies in the radio, the loop is opened for high-speed scanning under open-loop control of the DAC.

REFERENCES:
patent: 4236251 (1980-11-01), Ohgishi et al.
patent: 4264977 (1981-04-01), Deiss
patent: 4367558 (1983-01-01), Gercekci et al.
patent: 4461036 (1984-07-01), Williamson et al.
patent: 4498191 (1985-02-01), Rogers
patent: 4509203 (1985-04-01), Yamada
patent: 4521915 (1985-06-01), Baker et al.

Affiliated with

Also associated with

Rating

Rapid scanning radio with multi-mode local oscillator control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rapid scanning radio with multi-mode local oscillator control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rapid scanning radio with multi-mode local oscillator control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-498058