Micromechanical electrostatic resonator

Electrical generator or motor structure – Non-dynamoelectric – Charge accumulating

Reexamination Certificate

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C333S199000

Reexamination Certificate

active

10990411

ABSTRACT:
Exemplary embodiments of the invention provide a micromechanical electrostatic resonator which designs high frequency, increases a ratio of output voltage to input voltage, and designs low drive voltage or reduced power consumption. A micromechanical electrostatic resonator of exemplary embodiments includes a plate-shaped vibration body, a pair of electrodes arranged oppositely to each other at both sides of the vibration body with a gap from an outer circumferential portion of the vibration body, a feeding device to apply in-phase alternating-current power to the pair of electrodes, and a detecting device to obtain an output corresponding to a change in capacitance between the vibration body and the electrodes. The planar shape of the vibration body takes a shape having a curved outline which comprises a neck portion.

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patent: WO 02/17482 (2002-02-01), None
Tang et al.; “Laterally Driven Polysilicon Resonant Microstructures,” Sensors and Actuators, 20 (1989), pp. 25-32.
Wan-Thai Hsu et al.; “Q-Optimized Lateral Free-Free Beam Micromechanical Resonators,” Digest of Technical Papers, the 11thInt. Conf. On Solid-State Sensors and Actuators (Transducers '01), Munich, Germany, Jun. 10-14, 2001, pp. 1110-1113.
John R. Clark, “High-Q VHF Micromechanical Contour-Mode Disk Resonators,” Technical Digest, IEEE Int. Electron Devices Meeting, San Francisco, California, Dec. 11-13, 2000, pp. 399-402 Center for Integrated Microsystems.

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