NT3H2211 Antenna tuning

[josch]

Hi,

we are using the NT3H2211 NFC Tag.

Is there any documentation about the Antenna tuning with this IC? Because when tuning the coil to 13,56 MHz and then connect the circuit to the IC the resonance frequency is totally different.

So its hard to tune the antenna to 13,56 MHz not knowing the input impedance of the ic.

Thanks

Josch

[weidong_sun]

Hello Jochen,

    please register your account and download corresponding documents! the document is AN11276.zip, it's link is :

NXP Semiconductors :: Secure Connections for a Smarter World 

Best Regards,

Weidong