Patent ID: 8971012
Filing Date: 2015-03-03
Classification: G01C,G01P

Abstract:
1. A variable-area capacitor structure, comprising a movable electrode and a fixed electrode in each capacitor unit, wherein a front surface of the movable electrode is parallel to a front surface of the fixed electrode, characterized in that: the front surface of the movable electrode is in a rectangular shape, and the front surface of the fixed electrode is in a triangular shape or a sawteeth shape; or the front surface of the movable electrode is a triangular shape or a sawteeth shape, and the front surface of the fixed electrode is in a rectangular shape; the triangular front surface is only overlapped with one long side of the rectangular front surface; vertical distance between the movable electrode and the fixed electrode remains unchanged, and comparative movement between the movable electrode and the fixed electrode is parallel movement; wherein the movable electrode moves parallelly along a vertical direction of the one long side of the rectangular front surface that is overlapped with the triangular front surface; wherein a voltage is imposed between the movable electrode and the fixed electrode, so that an equivalent elasticity coefficient is produced and the equivalent elasticity coefficient is adjusted by adjusting the voltage imposed; and wherein the equivalent elasticity coefficient of the capacitor structure is constant when the voltage difference between fixed electrode of the unit and movable electrode is fixed and structure parameter and quantity of the capacitor structure are predetermined.