Rectangular NFC Antenna Calculator

For a project I had to calculate parameters needed to make nice rectangular PCB inductor for a NFC antenna. Since my search didn’t bear desired results, I decided to make my own. Enjoy.


mm
mm
oz
mil
mil
 
mm
mm
mm
 
μH

NFC coil example

Calculation is done per NXP’s AN1445.

17 thoughts to “Rectangular NFC Antenna Calculator”

  1. Thank you for this calculator. It’s the closest one that I’ve found for my needs. I am however going to be using a 38awg round wire for my application. :( Is there another calculator that you know of that will calculate the inductance of my antenna setup?

  2. How do you measure thickness in oz. Thickness is usually either in micrometer or millimeter, right?

  3. Why is the minimum height only 12mm? I think the math won’t go crazy if the height is, say 8mm, and that’s the height I’m constrained to in my “antenna” design. I’m not doing NFC, but am configuring for 13.56MHz.

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