Hi,
When I finished the manual soldering, I used the smart phone with NFC to approach the circuit board. The smart phone was equipped with RF430FRL152H Demo App. At the beginning, data on the mobile phone showed that the antenna part capable of PCB could work.After about 10 times, no matter how close the phone is to the circuit board
, the antenna began to fail, and there was no response on the phone, and the voltage measured on the VDDSW jumped between 0.3-1.4v, not up to 1.5v.This phenomenon is repeatable, what reason for this?How do I solve this problem?
Thanks very much!