Battery-assisted backscatter RFID transponder
US7394382B2 · kind B2 · utility
90Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2005 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Dec 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A radio frequency transponder includes at least one battery, which is coupled to provide electrical power for operating the transponder and at least one antenna, which is configured to receive and backscatter RF interrogation radiation from an interrogation device. An integrated circuit is arranged to store a code including information and, powered only with energy provided by the battery, to vary a radiation characteristic of the antenna responsively to the code so as to modulate the information onto the backscattered radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.