Method for extending the range of commercial passive RFID elements
US11321549B2 · kind B2 · utility
1Cited by
2References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 9, 2020 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Nov 9, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system that exploits collaboration between a plurality of spatially distributed RFID readers to enhance the range of commercial passive RFID tags, without alteration to the tags. The system uses distributed MIMO to coherently combine signals across geographically separated RFID readers. It is capable of inferring the optimal beamforming parameters to beam energy to a tag without any initial knowledge of the location or orientation of the tags.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.