2025-07-18 6:51 AM
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.