Apparatus and method for detecting RFID signals
US8472560B2 · kind B2 · utility
12Cited by
3References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 2, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Nov 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0067
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mixed-mode signal detection apparatus suitable for ISO/IEC 14443 Type A and Type B RFID proximity card applications. The apparatus combines switched capacitor sampling and digital post processing to recover information from Amplitude Shift Keying (ASK) modulated signals. A phase detector triggers a pulse generator, which is used to signal sample and hold units that store the peak value of each carrier signal cycle. The samples are used to form a discrete version of the modulation signal and are post-processed digitally to recover encoded signal information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.