Mifare receive problem, PN512 with booster

[aselcuks]

Hi;

I need to ask something very important and urgent please help. I have pn512 with booster amplifier mifare reader design. I have implemented the circuit as it is described in application note. One problem is when I am trying to arrange receive path, I see a very distorted signal there. It is not like output antenna signal which is smooth and same with the shape as it is always shown in application notes, but I have peaks at receive path signal and it is not smooth. Is it a problem? What should be the shape of receive path signal?

Thanks in advance

Best regards.

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