Patent · US Active

Sensor switch with spread spectrum sensing signal and synchronous rectifier

US11307056B2 · kind B2 · utility

0Cited by

3References

22Claims

0Family size

Assignee

CAPTRON ELECTRONIC GmbH · DE

Inventors

Bernhard Christ · Gerolzhofen, DE
Dirk Oldendorf · Gilching, DE
Jens Schüler · Althegnenberg, DE
Kilian Hüttenhofer · Munich, DE

Key dates

Filing date	Jun 8, 2020
Grant date	Apr 19, 2022
Priority date	—
Expiry date	Aug 10, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2217/960755
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A capacitive sensor including a sensor electrode connected to a signal generation circuit and a signal evaluation circuit. The signal generation circuit contains a signal generator that is a noise generator or a pseudo-noise generator, the signal evaluation circuit includes a synchronous rectifier. The synchronous rectifier is connected for synchronization to the signal generator.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.