Low power wireless device with sensitive wakeup radio
US11985595B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2021 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | May 7, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wakeup circuit operable in a low-power wireless device is provided. The wakeup circuit includes at least one radio frequency rectifier configured to output a rising transient voltage in response to existence of a RF signal received at an antenna of the wireless device; and a detector configured to output a wakeup signal when an input voltage level of the detector is higher than a reference voltage signal, wherein a signal output by the detector upon detection of a wakeup signal causes resetting each of the at least one rectifier upon detection of the wakeup signal; and wherein the wakeup circuit is coupled to an antenna interface of the wireless device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.