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ST25R3916B reader design with external antenna

Dilip
Associate II

Hi ST Team, 

I am new to NFC and have designed the schematic for NFC reader and antenna based on ST25R3916B. I am connecting these 2 PCBs with UFL connector antenna cable. When i started to test, some how it did not work, meaning tag is not detected. Can you pls review my design and suggest what changes should i do changes  in BOM to  have matching circuit and tune the antenna so that i can get the signals when tag is detected.

Below is are the schematic and PCB images attached here for review. I would appreciate if i get any reply at the earliest.

Since I am using antenna on a different PCBA, so I have used  reader in a single ended mode and used RFO1 and RFI1 for transmission and reception.

 

Dilip_0-1752846261477.pngDilip_1-1752846365046.png

 

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