Integrated receiver circuit for electromagnetic pulse detection in wireless microcontrollers
US10256199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2017 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Jul 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G2201/307
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated circuit includes an energy detection circuit, a switching circuit, and a tamper response circuit. The integrated circuit has an input for receiving a radio frequency (RF) signal, a first output for providing a demodulated signal, and a second output for selectively providing a detect signal. The detect signal is provided in response to detecting that an energy of an internal signal exceeds a first threshold when the integrated circuit is in a secure mode. The switching circuit is used to alternatively switch the input of the energy detection circuit to an RF input terminal in a normal mode and to an internal antenna in a secure mode. The tamper response circuit disables a function of the integrated circuit in response to an activation of the detect signal in the secure mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.