I am working with a development kit for arduino called "MF-RC522"; and I am not sure who developt this board, is it from NXP or Arduino itself?
I do not find documentation on the components on this board beside that there is an MFRC522 on it. So I would like to know the values for L0, C0, C1, C2, (Fig. 27 in MFRC522 documentation) - Could you help me?
The blue Ref.1 and Ref.2 links jump to page 90.
Try Googling "MFRC52x Reader IC Family Directly Matched Antenna Design"
and "MIFARE (ISO/IEC 14443 A) 13.56 MHz RFID Proximity Antennas".
Those pages seem to contain the aerial data.
thanks for quick response.
I already saw this application note. But this descirbes antenna circuit design in general, and do not lists a bill of material for the components on the dev-kit "MF-RC522"
So the main question is still who design the board MF-RC522, to get a list of values