about NFC Antenna Pattern

[theo-choi]

Hello,

The back of the NFC antenna pattern in the photo below is designed with a ground pattern. Could you advise on the characteristics this might entail?

Thank you.

[Tomas_Parizek · Accepted solution]

Hello theo-choi, 

I know that some customers used similar patterns for better EMI behavior. 

BR

Tomas 

[KellyLi]

Hello @theo-choi 

Could you share the exact type of the IC what you are using? Maybe, some Demo design can be recommended to you for reference.

[theo-choi]

The chip in the above picture is an NXP chip, but it's not the one we use in our devices.

Thank you for your interest.

[theo-choi]

Connecting the center of the antenna pattern to GND improves the characteristics against power noise.

from 3ALogistics