i have done schematic as per PN7462AUHN evaluation board, but i can't get NFC range.
please suggest me which area and which section impact on.
Could you please check the Training & Events|NXP page? There are 6 available webinars of antenna design, I believe this will help you the most for your question NFC Antenna Design 4: Optimization & Debugging|NXP and it is most likely you will find useful information for what you are trying to do.
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