Adaptable detection threshold for RFID tags and chips
US8258955B1 · kind B1 · utility
21Cited by
49References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2011 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Jan 24, 2031 |
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.