Signal masking for secure backscattered communication
US12284028B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2023 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Apr 19, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K2203/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Examples are disclosed that relate to improving security of radio frequency (RF) backscattered communication. In one example, a RF device includes a primary RF signal receiver, a secondary signal receiver, a signal mixer, and a transmitter. The primary RF signal receiver is configured to receive a RF carrier signal sent from a base station. The secondary signal receiver is configured to receive a masking signal from the base station. The signal mixer is configured to generate a response signal based at least on the RF carrier signal and generate a mixed signal by mixing the response signal and the masking signal. The transmitter is configured to broadcast the mixed signal, via backscattering, as a masked backscattered signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.