Patent ID: 9252740
Filing Date: 2016-02-02
CPC Classification: H03H

Claim Text:
1. A microelectromechanical system (MEMS) resonator comprising: a resonant semiconductor structure including a first resonator beam that extends from a support element; a first drive electrode disposed in proximity to the first resonator beam to generate, in response to a time-varying drive signal, a time-varying electrostatic force that causes the first resonator beam to oscillate in a resonant mode; a first sense electrode to generate, in response to oscillation of the first resonator beam, a timing reference signal having a frequency corresponding to the oscillation frequency of the first resonator beam; and a first semiconductor shielding structure coupled to a reference voltage node and physically disposed between the first drive electrode and the first sense electrode, the first semiconductor shielding structure being sufficiently doped to enable conduction of a first current to the voltage reference node.