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US 8,947,171 B1Granted
Coupled timing oscillators
AssigneeSand 9, Inc.
InventorPritiraj Mohanty
Life of this patent
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Abstract
Coupled timing oscillators are described. The coupling may be electrical, mechanical, or electromechanical in some instances. In some cases, the timing oscillators include mechanical resonators. Any number of timing oscillators may be coupled. The coupled timing oscillators may be operated cooperatively to produce an oscillating signal with improved signal characteristics, such as phase noise and jitter.
Claims17
A device, comprising:
- a first timing oscillator configured to receive a first drive signal and output from a first microelectromechanical system (MEMS) resonator a first oscillating signal;
- a second timing oscillator configured to receive a second drive signal and output from a second MEMS resonator a second oscillating signal,
- wherein an output terminal of the first timing oscillator is coupled to an input terminal of the second timing oscillator and wherein an output terminal of the second timing oscillator is coupled to an input terminal of the first timing oscillator.
A device, comprising:
- a first timing oscillator configured to receive a first drive signal and output a first oscillating signal, the first timing oscillator including a first mechanical resonator;
- a second timing oscillator configured to receive a second drive signal and output a second oscillating signal, the second timing oscillator including a second mechanical resonator,
- wherein the first and second mechanical resonators are coupled to each other.
A method, comprising:
- producing an oscillating reference signal from two or more coupled timing oscillators, wherein producing the oscillating reference signal comprises electromechanically coupling a mechanical resonator of a first timing oscillator of the two or more timing oscillators with a mechanical resonator of a second timing oscillator of the two or more timing oscillators.
Dependencies are inferred from the claim text.