System for interrogating RFID transponders
US10073993B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 30, 2015 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Jul 30, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10356
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a system for electromagnetic interrogation of RFID transponders including at least one RFID transponder, at least one so-called repeater RFID device and at least one RFID terminal, the at least one RFID terminal is configured to emit an interrogation signal towards the at least one repeater at a frequency F1, the at least one repeater is configured to repeat the interrogation signal with frequency F1 towards the at least one RFID transponder at a frequency F2 and the at least one RFID transponder is configured to emit a backscattered response signal at a frequency F3, the system being characterized in that the at least one repeater is configured to perform an exclusively analog frequency transposition from the frequency F1 to the frequency F2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.