RFID
来自Jack's Lab
目录 |
1 Overview
2 Chip
2.1 EM4095
Use in an RFID basestation to perform the following functions:
- antenna driving with carrier frequency - AM modulation of the field for writable transponder - AM demodulation of the antenna signal modulation induced by the transponder communicate with a microprocessor via simple interface.
Features:
- Integrated PLL system to achieve self adaptive carrier frequency to antenna resonant frequency
- No external quartz required
- 100 to 150 kHz carrier frequency range
- Multiple transponder protocol compatibility (e.g. EM400X, EM4050, EM4150, EM4070, EM4170, EM4069)
- Sleep mode 1µA
- USB compatible power supply range
- Small outline plastic package SO16 or PSOP2 16
http://www.emmicroelectronic.com/products/rf-identification-security/rf-reader-ics/em4095
2.2 MFRC522
3 Antenna
- http://ww1.microchip.com/downloads/en/AppNotes/00678b.pdf
- http://ww1.microchip.com/downloads/en/appnotes/00710c.pdf
- http://www.sonnetsoftware.com/support/files/appnote/SAN-206A%20RFID%20Antenna%20Design%200602.pdf
- https://www.sabanciuniv.edu/mdbf/telecom/eng/RWL/report.pdf
4 Reference