Patents
US 12589987 B2: Microelectromechanical systems sensor with frequency dependent input attenuator
- Granted
- 2026-03-31
- Filed
- 2022-12-29 application 18090987
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A microelectromechanical systems (MEMS) sensor, a capacitive MEMS motor sensing circuit and a method are provided. The present application provides a microelectromechanical systems (MEMS) sensor. The MEMS sensor includes a housing having electrical contacts disposed on an exterior of the housing. The MEMS sensor further includes a capacitive MEMS motor disposed in the housing, and an electrical circuit disposed in the housing and being electrically coupled to the electrical contacts. The electrical circuit includes a bias voltage source having an output coupled to an input of the MEMS motor. The electrical circuit further includes a buffer circuit including an amplifier input stage having an input coupled to an output of the MEMS motor. The electrical circuit still further includes a frequency dependent input attenuator including a feedback capacitor and an input attenuator low pass filter, the input attenuator low pass filter having an input coupled to the output of the amplifier input stage and an output coupled to a first terminal of the feedback capacitor, where a second terminal of the feedback capacitor is coupled to the input of the amplifier input stage.
Source: PTBLXML, file of 2026-03-31 (ipgb20260331.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Knowles Electronics, LLC 414 patents | US company or organization | Itasca, IL | PTBLXML, file of 2026-03-31 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Michael Jennings | McKinney, TX | PTBLXML, file of 2026-03-31 | ||
| Steven Boor | Plano, TX | 24 | PTBLXML, file of 2026-03-31 | |
| Divya Kesharwani | Rolling Meadows, IL | PTBLXML, file of 2026-03-31 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B81B | Microstructural devices or systems, e.g. micromechanical devices | B81B7/008 | PTBLXML, file of 2026-03-31 |
| B81C | Processes or apparatus specially adapted for the manufacture or treatment of microstructural devices or systems | B81C1/0023 | PTBLXML, file of 2026-03-31 |
| H04R | Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; electric hearing aids; public address systems | H04R2201/003 | PTBLXML, file of 2026-03-31 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.