OSCILLATOR HAVING REDUCED SENSITIVITY TO ACCELERATION
First Claim
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1. An oscillator comprising:
- a plurality of resonator portions, each said resonator portion having an active resonance region defined between a set of electrodes capable of receiving signals caused by oscillator resonance in said active resonance region during operation of said oscillator,each of said resonator portions being mounted in said oscillator using one or more mountings, each resonator portion comprising first and second ends, the first end of each resonator portion being mounted to a substrate via at least one of said one or more mountings, the second end of each resonator portion being free, and the resonator portions each having a respective longitudinal axis which is directed along the resonator portion from the first end to the second end of the resonator portion,wherein said resonator portions are mounted in said oscillator such that the longitudinal axes of the resonator portions are directed in different directions so as to reduce the sensitivity of the oscillator to acceleration.
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Abstract
An oscillator includes resonator portions each mounted to a substrate via one or more mountings at one end and having an active resonance region defined between a set of electrodes. Each resonator portion has a longitudinal axis directed along the resonator portion from the mounted end to a free end. The resonator portions are mounted such that their longitudinal axes are directed in different directions, e.g. an anti-parallel arrangement, so that acceleration sensitivity vector components aligned with the longitudinal axis cancel each other out.
11 Citations
24 Claims
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1. An oscillator comprising:
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a plurality of resonator portions, each said resonator portion having an active resonance region defined between a set of electrodes capable of receiving signals caused by oscillator resonance in said active resonance region during operation of said oscillator, each of said resonator portions being mounted in said oscillator using one or more mountings, each resonator portion comprising first and second ends, the first end of each resonator portion being mounted to a substrate via at least one of said one or more mountings, the second end of each resonator portion being free, and the resonator portions each having a respective longitudinal axis which is directed along the resonator portion from the first end to the second end of the resonator portion, wherein said resonator portions are mounted in said oscillator such that the longitudinal axes of the resonator portions are directed in different directions so as to reduce the sensitivity of the oscillator to acceleration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of manufacturing an oscillator with reduced sensitivity to acceleration, the method comprising the steps of:
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providing a plurality of resonator portions; for each said resonator portion, defining an active resonance region between a set of electrodes so as to be capable of receiving signals at said electrodes caused by oscillator resonance in said active resonance region during operation of said oscillator; mounting each of said resonator portions in said oscillator using one or more mountings, each resonator portion comprising first and second ends, the first end of each resonator portion being mounted to a substrate via at least one of said one or more mountings, the second end of each resonator portion being free, the resonator portions each having a respective longitudinal axis which is directed along the resonator portion from the first end to the second end of the resonator portion; and mounting said resonator portions in said oscillator such that the longitudinal axes of the resonator portions are directed in different directions so as to reduce the sensitivity of the oscillator to acceleration.
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Specification