Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements
Reexamination Certificate
2007-01-16
2007-01-16
Mis, David (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Afc with logic elements
C331S016000, C331S017000, C331S179000
Reexamination Certificate
active
11186059
ABSTRACT:
A technique for establishing a tuning signal window for a multi-band VCO involves setting the tuning signal window to an initial size, preferably a relatively small size, and determining whether the VCO is churning. When the VCO is determined to be churning, the tuning signal window is expanded until the VCO stops churning. In an embodiment, the tuning signal window is expanded incrementally until the tuning signal window is large enough to include a solution, where a solution is defined as an operating point along a frequency band that satisfies both the setpoint frequency and tuning window signal requirements. The tuning signal window can be set at an offset relative to the tuning signal zero to compensate for shifts in the frequency bands that may result from changes in operating conditions.
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Knotts Thomas Allen
Steinbach Gunter Willy
Agilent Technologie,s Inc.
Mis David
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