Oscillators – Automatic frequency stabilization using a phase or frequency... – With reference oscillator or source
Patent
1999-03-23
2000-09-05
Grimm, Siegfried H.
Oscillators
Automatic frequency stabilization using a phase or frequency...
With reference oscillator or source
331 1A, 331 34, 331 45, 331 57, 377 52, 377107, H03L 7183, H03K 2138
Patent
active
061149152
ABSTRACT:
Method and circuitry for a frequency synthesizer having wide operating frequency range. The frequency synthesizer uses multiple programmable loadable counters in a phase-locked loop arrangement to generate any combination of clock frequencies based on user programmed values. In a specific embodiment of the invention, the phase-locked loop includes a voltage-controlled oscillator with a built-in programmable phase shift. The present invention further provides a preferred embodiment for a high speed loadable down counter for use in the frequency synthesizer.
REFERENCES:
patent: 4975931 (1990-12-01), Cosand
patent: 5036216 (1991-07-01), Hohmann et al.
patent: 5059924 (1991-10-01), JenningsCheck
patent: 5233316 (1993-08-01), Yamada et al.
patent: 5298867 (1994-03-01), Mestha
patent: 5391996 (1995-02-01), Marz
patent: 5416446 (1995-05-01), Holler, Jr. et al.
patent: 5488627 (1996-01-01), Hardin et al.
patent: 5614869 (1997-03-01), Bland
patent: 5889436 (1999-03-01), Yeung et al.
ORCA OR3Cxx (5 V) and OR3Txxx (3.3 V) Series Field-Programmable Gate Arrays, Lucent Technologies, microelectronics group, Bell Labs Innovations, preliminary data sheet Nov. 1997.
Huang Joseph
Kim In Whan
Nguyen Khai
Sung Chiakang
Wang Bonnie I.
Altera Corporation
Grimm Siegfried H.
LandOfFree
Programmable wide-range frequency synthesizer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Programmable wide-range frequency synthesizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable wide-range frequency synthesizer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2216247