Oscillators – Automatic frequency stabilization using a phase or frequency... – Tuning compensation
Reexamination Certificate
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.
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Aviat U.S., Inc.
Barnie Rexford N
Sheppard Mullin Richter & Hampton LLP
Tran Jany
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