STEVAL-25R3916B 66 x 66 mm 2 turns antenna data

[ctee]

Hi,

I am new to NFC therefore using the kit as a starting point. I learnt that we can use the following tools to design the antenna:-

https://eds.st.com/antenna/#/

Question 1

If I am using the  tool (https://eds.st.com/antenna/#/) to help design the antenna and to find the right capacitance for the matching network,

what sort of data(the field marked with ?) should I enter on the page as shown below?

Geometry
Turns: 2
Antenna Length: ? mm
Antenna Width: ? mm

Conductor
Width: ? mm
Spacing: ? mm
Thickness: ? um

Substrate
Thickness: ? mm
RElative Electrical Permittivity: ?

Resonant freq: 13.56MHz

Question 2:

Can you provide me with the value of the antenna inductance?

Thanks in advance!!!

Best Regards,

Cindy

[Ulysses HERNIOSUS · Accepted solution]

Hi Cindy,

please study AN5276 and AN5322.

BR, Ulysses