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US 9,071,253 B2Granted
Compensation for digitally controlled oscillator apparatus and method
AssigneeIntel Corporation
InventorShenggao Li
Life of this patent
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Abstract
Automatic digital sensing and compensation of frequency drift caused by temperature, aging, and/or other effects may be provided by including a compensation capacitor array and a sensing logic. The sensing logic may be configured to detect a drift in a first control signal and to provide the compensation capacitor array with a second control signal. The second control signal is configured to cause an adjustment of capacitance in the compensation capacitor array based on the detected drift in the first control signal.
Claims20
An apparatus, comprising:
- a first capacitor array;
- a sensing logic coupled to the first capacitor array and configured to detect a drift in a first control signal and to provide the first capacitor array with a second control signal, wherein the second control signal is configured to cause an adjustment of capacitance in the first capacitor array based on the detected drift in the first control signal;
- and
- a second capacitor array to receive the first control signal and to provide fine frequency tuning in a phase-locked loop.
1 more element
A method, comprising:
- detecting by a detection circuit, a drift in a first control word;
- based at least in part on the detected drift, adjusting by the detection circuit, a second control word to be provided to a first capacitor array to cause an adjustment in capacitance based on the detected drift in the first control word;
- and
- providing the first control word to a second capacitor array to cause fine frequency tuning in the second capacitor array.
1 more element
A system, comprising:
- a processor;
- a communication interface coupled to the processor, the communication interface including:
- a first capacitor array;
- a second capacitor array;
- and
- a sensing logic coupled to the first capacitor array and the second capacitor array;
- and
- a memory including a non-transitory computer readable medium having instructions executable by the processor to cause the communication interface to:
- detect by the sensing logic a drift in a first control word;
- and
- based at least in part on the detected drift, adjust, a second control word to be provided to the first capacitor array to cause an adjustment in capacitance based on the detected drift in the first control word.
8 more elements
Dependencies are inferred from the claim text.