Forum Replies Created

  • Re: Re: Forum problems

    28. April 2015 at 14:17
    in reply to: Forum problems
    Also, if I change the receive path seperation point, it would be taken directly from antenna right after serial resistors, is it correct? Or should it be taken right after emc filter (L0)?


    Thanks a lot
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    Re: Re: Forum problems

    28. April 2015 at 14:12
    in reply to: Forum problems
    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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    Re: Re: Forum problems

    16. April 2015 at 16:52
    in reply to: Forum problems
    Hi Rodolfo,
    I have attended to some webinars about nfc desig. I have included booster to achieve EMVco level. Also I see quite disturbing signal on the receive path. Can I take the receive path not before the serial cap but after the serial cap in the match circuit?

    Thanks for your reply I am examining the link right now.
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    Re: Re: Forum problems

    2. April 2015 at 16:25
    in reply to: Forum problems
    Hi,

    I am developing a pn512 board for emvco certification but even I can reach the voltage and timing levels, I cant make the communication provided at 4cm distance. I need some details for receive path and register settings for both A and B types about CWGSN,MODGSN,MODGSP,CWGSP values, I have no ideo what should they be for an optimum level. I investigated the receive path and it is at about 2.5 volts but it cant manage to communicate. What could be the problem?

    Thanks in advance



    this was my question, I need some guidence
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