Patent ID: 7847649
Filing Date: 2010-12-07
Classification: H03H,Y10T

Abstract:
1. A MEMS resonator comprising a movable element, the movable element comprising a first part having a first Young's modulus and a first temperature coefficient of the first Young's modulus, and the movable element further comprising a second part having a second Young's modulus and a second temperature coefficient of the second Young's modulus, a sign of the second temperature coefficient being opposite to a sign of the first temperature coefficient, at least, at operating conditions of the MEMS resonator, and a cross-sectional area of the first part and the cross-sectional area of the second part being such that the absolute temperature coefficient of the Young's modulus of the first part multiplied by the cross-sectional area of the first part does not deviate more than 20% from the absolute temperature coefficient of the Young's modulus of the second part multiplied by the cross-sectional area of the second part, the cross-sectional areas being measured locally and perpendicularly to the movable element.