Adaptable detection threshold for RFID tags and chips
US7917088B2 · kind B2 · utility
23Cited by
45References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2007 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Feb 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/77
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
RFID tags, tag circuits, and methods are provided that reduce at least in part the distortion to received wireless signals, which is caused by interference in the environment. Two or more thresholds are used to digitize the received signal implemented by two or more demodulators. Multiple low pass and digital filters may be implemented with the demodulators, allowing removal of narrow pulses caused by the interference and reduction of beat tone amplitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.