Frequency synthesizer, radio communication system using the...

Details Frequency synthesizer, radio communication system using the... Frequency synthesizer, radio communication system using the...

2007-06-12

2007-06-12

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C331S179000, C331S17700V

Reexamination Certificate

active

11059691

ABSTRACT:
A frequency synthesizer includes a VCO (1), measures an oscillation frequency of each of multiple bands with a predetermined voltage (V1) applied to the VCO (1), and stores the measurement result to a storage circuit (11). The synthesizer compares a frequency division ratio from a PLL control circuit (14) with the measured oscillation frequency stored to the storage circuit, and selects one band from VCO (1) based on the comparison result. The synthesizer causes the VCO (1) to oscillate on the selected band with a fixed voltage, and determines a frequency band to be used for phase-locked operation in actual based on an error between the oscillation frequency and a reference frequency.

REFERENCES:
patent: 6686804 (2004-02-01), Adams et al.
patent: 2001/0052823 (2001-12-01), Hirano et al.
patent: 2006/0258312 (2006-11-01), Uozumi et al.
patent: 1 168 627 (2002-01-01), None
patent: 2001-339301 (2001-12-01), None
patent: 2003-152535 (2003-05-01), None
patent: 03/044961 (2003-05-01), None

Affiliated with

Also associated with

Rating

Frequency synthesizer, radio communication system using the... 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, radio communication system using the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency synthesizer, radio communication system using the... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3869076