On the 3916-DISCO board, how does one switch to NFC forum matching instead of the on-board VHBR matching?

SSita · ‎2020-04-02

I would prefer range over data rate and was wondering if the NFC forum matching from the ST25R3911-DISCO board would apply to the 3916?

Travis Palmer · ‎2020-04-03

Hello SSita,

This is not possible. Both matchings are designed for different antennas. Therefore they cannot easily exchanged. To increase the output power / read range, please follow AN5276 - Antenna design for ST25R3916. The Q-factor should be choosen as high as possible according to the supported bit rates and the target matching impedance can be lowered. AN5276 should give some guidance about the selection.

BR Travis

View solution in original post

Travis Palmer · ‎2020-04-03

Hello SSita,

This is not possible. Both matchings are designed for different antennas. Therefore they cannot easily exchanged. To increase the output power / read range, please follow AN5276 - Antenna design for ST25R3916. The Q-factor should be choosen as high as possible according to the supported bit rates and the target matching impedance can be lowered. AN5276 should give some guidance about the selection.

BR Travis