Control Impedance trace transmitter and receiver to connector antenna.

[ADoan.1]

Hi everybody,

I use chip set ST25R3912-AWLT for NFC design,

In PCB layout, i was draw ST25R3912 in main circuit and connect Tx, Rx to antenna use connector.

Do i need control impedance trace transmitter and receiver.

Thank you,

AnhDN

[Travis Palmer · Accepted solution]

Hello AnhDN,

No special impedance has to be achieved for this frequency band.

But you should take care, that the RFO and RFI traces are routed symmetrical, parallel and close to each other.

BR Travis