Oscillators – Electromechanical resonator
Reexamination Certificate
2011-03-15
2011-03-15
Mis, David (Department: 2817)
Oscillators
Electromechanical resonator
C331S018000, C331S066000
Reexamination Certificate
active
07907027
ABSTRACT:
Example embodiments of the present invention are directed to a compensated microelectromechanical oscillator, having a microelectromechanical resonator that generates an output signal and frequency adjustment circuitry, coupled to the microelectromechanical resonator to receive the output signal of the microelectromechanical resonator and, in response to a set of values, to generate an output signal having second frequency. The values may be determined using the frequency of the output signal of the microelectromechanical resonator, which depends on the operating temperature of the microelectromechanical resonator and/or manufacturing variations of the microelectromechanical resonator. The frequency adjustment circuitry may include frequency multiplier circuitry, for example, PLLs, DLLs, digital/frequency synthesizers and/or FLLs, as well as any combinations and permutations thereof. The frequency adjustment circuitry, in addition or in lieu thereof, may include frequency divider circuitry, for example, DLLs, digital/frequency synthesizers (for example, DDS) and/or FLLs, as well as any combinations and permutations thereof.
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Lutz Markus
Partridge Aaron
Kenyon & Kenyon LLP
Mis David
Robert & Bosch GmbH
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