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US 2014/0176246 A1Published application
Resonator
AssigneeNXP B.V.
InventorsCasper van der Avoort, Andreas Bernardus Maria Jansman, Robert James Pascoe Lander
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Abstract
A resonator has a main resonator body and a secondary resonator structure. The resonator body has a desired mode of vibration of the resonator alone, and a parasitic mode of vibration, wherein the parasitic mode comprises vibration of the resonator body and the secondary resonator structure as a composite body. In this way, unwanted vibrational modes are quenched by the second suspended body.
Claims16
A resonator comprising:
- a resonator body;
- an actuation arrangement for driving the resonator into a resonant mode, in which the resonator body vibrates parallel to a first axis;
- a detection arrangement for detecting the vibration in the first axis direction and generating an electrical output signal derived from the vibration;
- and
- a second resonator structure which is coupled to nodal points of the resonator body with respect to the main resonant mode of the resonator body.
- wherein the resonator body has a desired mode of vibration of the resonator alone, and a parasitic mode of vibration, wherein the parasitic mode comprises vibration of the resonator body and the second resonator structure as a composite body.
3 more elements
A resonator comprising:
- means for driving a resonator body into a resonant mode, in which the resonator body vibrates parallel to a first axis;
- means for detecting the vibration in the first axis direction and generating an electrical output signal derived from the vibration;
- and
- a second resonator structure means which is coupled to nodal points of the resonator body with respect to the main resonant mode of the resonator body,
- wherein the resonator body has a desired mode of vibration of the resonator alone, and a parasitic mode of vibration, wherein the parasitic mode comprises vibration of the resonator body and the second resonator structure as a composite body.
2 more elements
Dependencies are inferred from the claim text.