RFID Tag over Bluetooth?

[Oleh]

Dear

Is there a possibility within Nordic SoC to make a passive RFID Tag which will connect to SmartPhone via Bluetooth?

Just like µBlue Series, but smaller and using energy harvesting? Is it feasible at all?

Thank you&Regards

[Ole Morten]

It isn't clear to me exactly what you need, but any kind of BLE Peripheral device can be made with the nRF51822. However, the radio is a pure 2.4 GHz device, so it can not be used directly with any kind of passive RFID solutions, which usually employs completely different frequency bands.

[Ole Morten]

For general-purpose application, you'd have to either use the nRF51822 or the nRF8001. The nRF51822 is available as QFN48, 6x6 mm, and WLCSP. The nRF8001 is available as QFN32, 5x5 mm, but requires an additional application processor.

My guess on what would be the smallest-to-largest solutions would be:

• WLCSP of nRF51822, the ST BAL-NRF02D3 balun and a chip-antenna.
• QFN of nRF51822, the ST BAL-NRF01D3 and a chip-antenna.
• QFN of nRF51822, ST BAL-NRF01D3 and a PCB-antenna.
• QFN of nRF51822, discrete match and PCB antenna.
• Any solution including an nRF8001. My recommendation for the nRF51822 therefore still stands. Remember that it's also available in a 128 kB variant, of which the BLE softdevice takes 80 kB.