Single-capacitor inductive sense systems

US11536758B2 · kind B2 · utility

Assignee

• CIRRUS LOGIC, INC. · US

Inventors

• Jason L. WARDLAW · Austin, US
• Michael A. Kost · Austin, US
• Anthony S. Doy · Los Gatos, US
• Tejasvi Das · Austin, US
• Siddharth Maru · Austin, US
• Xin Zhao · Austin, US
• Matthew BEARDSWORTH · Austin, US
• Bruce E. Duewer · Austin, US

Key dates

• Filing date: Jul 19, 2019
• Grant date: Dec 27, 2022
• Expiry date: Oct 25, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B06B1/045
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system may include an array of sensor elements, the array of sensor elements each comprising a first type of passive reactive element, a second type of passive reactive element electrically coupled to the array of sensor elements, a driver configured to drive the array of sensor elements and the second type of passive reactive element, and control circuitry configured to control enabling and disabling of individual sensor elements of the array of sensor elements to ensure no more than one of the array of sensor elements is enabled at a time such that when one of the array of sensor elements is enabled, the one of the array of sensor elements and the second type of passive reactive element together operate as a resonant sensor.