Circuits for RFID tags with multiple non-independently driven RF ports
US7528728B2 · kind B2 · utility
29Cited by
85References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2005 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Nov 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D30/62
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit for an RFID tag has at least two RF ports for driving points of the antenna that may correspond to different RF polarizations. The RF ports may be driven by a common modulating signal, or by separate modulating signals. Further, the ports may be coupled and uncoupled together, responsive to a control signal. The control signal may be the same as one or both of the modulating signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.