Coupled MEMS structure for motion amplification
First Claim
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1. A microelectromechanical structure (MEMS) device comprising:
- a secondary cantilever MEMS element displaceably coupled to a substrate; and
a primary cantilever MEMS element displaceably coupled to the secondary cantilever MEMS element and having a resonant frequency substantially equal to the secondary cantilever MEMS element and having a much larger displacement than the secondary cantilever MEMS element.
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Abstract
A microelectromechanical structure (MEMS) device includes a secondary MEMS element displaceably coupled to a substrate. A primary MEMS element is displaceably coupled to the secondary MEMS element and has a resonant frequency substantially equal to the secondary MEMS element and has a much larger displacement than the secondary MEMS element.
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Citations
16 Claims
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1. A microelectromechanical structure (MEMS) device comprising:
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a secondary cantilever MEMS element displaceably coupled to a substrate; and a primary cantilever MEMS element displaceably coupled to the secondary cantilever MEMS element and having a resonant frequency substantially equal to the secondary cantilever MEMS element and having a much larger displacement than the secondary cantilever MEMS element. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A microelectromechanical structure (MEMS) device comprising:
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a secondary cantilever MEMS resonator coupled to a substrate; and a primary cantilever MEMS resonator coupled to the secondary cantilever MEMS resonator and having a resonant frequency substantially equal to the secondary cantilever MEMS resonator, wherein the primary cantilever MEMS resonator is coupled to the secondary cantilever MEMS resonator to provide a much larger displacement than the secondary cantilever MEMS resonator. - View Dependent Claims (9, 10, 11)
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12. A method comprising:
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subjecting a secondary cantilever MEMS resonator that is coupled to a substrate to a source of energy to cause it to vibrate at a resonant frequency; and causing a primary cantilever MEMS resonator coupled to the secondary cantilever MEMS resonator to vibrate at the resonant frequency, wherein both the primary and secondary cantilever MEMS resonators have approximately the same resonant frequency. - View Dependent Claims (13, 14, 15, 16)
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Specification