Quality of phase lock and loss of lock detector

Details Quality of phase lock and loss of lock detector Quality of phase lock and loss of lock detector

2011-05-31

2011-05-31

Barnie, Rexford N (Department: 2819)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C331S017000, C327S157000, C375S376000

Reexamination Certificate

active

07952437

ABSTRACT:
A systems and methods for providing phase lock conditions detection, such as a quality of phase lock and loss of lock detection, are described herein. One exemplary method comprises detecting an output frequency, comparing the output frequency with a first reference signal, providing a first signal and a second signal as a function of the output frequency and first reference signal comparison, receiving a predetermined threshold from a second reference signal, monitoring a deviation of the first and second signals from the predetermined threshold, generating a third signal as a function of the deviation, comparing the third signal to a window threshold wherein the window threshold is set based on a predetermined loop variable, generating a fourth signal a function of the third signal and the window threshold comparison, and providing an alarm based on the fourth signal.

REFERENCES:
patent: 4499434 (1985-02-01), Thompson
patent: 5278520 (1994-01-01), Parker et al.
patent: 5394444 (1995-02-01), Silvey et al.
patent: 5525932 (1996-06-01), Kelkar et al.
patent: 5719532 (1998-02-01), Nayebi et al.
patent: 5724007 (1998-03-01), Mar
patent: 5822387 (1998-10-01), Mar
patent: 5838749 (1998-11-01), Casper et al.
patent: 5870002 (1999-02-01), Ghaderi et al.
patent: 5886582 (1999-03-01), Stansell
patent: 6163186 (2000-12-01), Kurita
patent: 6215834 (2001-04-01), McCollough
patent: 6226339 (2001-05-01), Nam et al.
patent: 6320469 (2001-11-01), Friedberg et al.
patent: 6329853 (2001-12-01), Iinuma
patent: 6429901 (2002-08-01), Kiyose et al.
patent: 6483361 (2002-11-01), Chiu
patent: 6496554 (2002-12-01), Ahn
patent: 6566920 (2003-05-01), Kim
patent: 6744838 (2004-06-01), Dixit
patent: 6757349 (2004-06-01), Katayama et al.
patent: 6794944 (2004-09-01), Hirai
patent: 6940323 (2005-09-01), Katoh et al.
patent: 6954510 (2005-10-01), Lee
patent: 6998889 (2006-02-01), Best
patent: 7061332 (2006-06-01), Siniscalchi et al.
patent: 7082178 (2006-07-01), Meltzer
patent: 2004/0124936 (2004-07-01), Li
patent: 2004/0150480 (2004-08-01), Lee
patent: 2005/0035798 (2005-02-01), Best
Office Action mailed Sep. 15, 2008 from U.S. Appl. No. 11/765,970, filed Jun. 20, 2007.
Office Action mailed Apr. 16, 2009 from U.S. Appl. No. 11/765,970, filed Jun. 20, 2007.
Notice of Allowance mailed Sep. 4, 2009 from U.S. Appl. No. 11/765,970, filed Jun. 20, 2007.

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