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chenyuxiang
Associate
since ‎2024-04-24
‎2024-04-26

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NFC Antenna's Waves were not fluently

2024-04-25
Hi  Supporters:    I used the St25r3911b IC to design NFC Module. Then, the new module could work.    However, the waves at the Antenna side are not well, please check the picture at the end.    I think maybe the matching circuit parameters do not ma...

ST25R3911B芯片在同样的电路下，两块板子上的表现不一致

2024-04-24
哈喽！ST官方，本人使用ST25R3911B这款芯片做NFC识别方案；同样的电路，做了5块板子，发现天线识别NFC标签的表现不一致；1、1号板子可以正常识别NFC标签；2、2号板子不能正常识别标签，需要调节匹配电路参数，且这两款板子调节的参数不一致；3、将1号的板子调整为2号的参数，1号板子无法识别，工作不正常；4、其余的板子也是，调整参数都不一致，才能正常工作。请问，大佬们，这是什么原因？都是同样的电路。
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