Hi,
We are planning to use ST part# ST25R3916B in one of our projects. The product is targeted for European market, and it might also be targeted to US and other global markets as well. Could you help us to know the various design aspects (Electrical and software) we need to take care from NFC certification point of view (considering the target counties) for the NFC design using ST25R3916B (NFC reader) and ST25DV04KC (Tag IC), if any please?
In our application, the tag antenna will be placed on a metal surface along with the ferrite sheet. We would like to set antenna impedance to a value of around 15 ohms. Could you help us to know the preferred position of the smith chart’s inner loop and the 13.56MHz point for this application considering a reading distance of about 7 to 8cm please? Please let us know the optimum antenna impedance value, if 15 ohms is not OK.
Thank you,
Kiran
