Energy harvesting for battery-less RFID tag devices with internal transmitters
US9864882B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2015 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | May 15, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B15/063
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A battery-less RFID tag device with an RFID antenna assembly and RFID transmitter, which harvests power from an RF source is disclosed. The RF source can be a mobile phone, and embedded system, and the like. The RFID device can include an energy harvesting component, an energy conversion component, an energy storing component, a non-transitory memory, a controller, and an RFID transmitting component. The energy harvesting component can inductively harvest energy from RF transmissions, which charges a capacitor to power other RFID device components, including the RFID transmitter. In one embodiment, the battery-less RFID tag device can be utilized in conjunction with a mobile phone for vehicle toll payments, which are RFID based.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.