NXP Antenna Tools designer

[M_Chene]

Hello everyone,

I am working on a NFC project in which I want to use a custom antenna. I planned to use the OM26630FDK Developpement kit. To design the matching circuit I tried to use NXP Antenna Design software. However, the antenna datasheet gives me antenna inductance, self resonance frequency, ... and I can't fill the gray boxes in the software (as you can see in the screenshot). Do you know how I can solve this matter ?

Thank you in advance for your help

M Chene