Inductance calculation of a 3D shape

Hi,

Is it possible to estimate the inductance coil of a 3D shaped coil? i.e, imagine a loop wire that runs along some of the edges of a cube doing several turns. I could not find any reference regarding this. I am trying to build different shape antennas for RFID low frequency devices (inductive coupling).

The only reference I have found is this:

https://es.mathworks.com/help/rfpcb/ref/inductance.html

In addition, I found this but the shapes are only planar (spiral, circular, square...)

https://ww1.microchip.com/downloads/en/AppNotes/00710c.pdf

[Sam Chak]

Hi @MRR

Can you first create the shape of the Inductor using the spiralInductor() function?

https://www.mathworks.com/help/rfpcb/ref/spiralinductor.html

[MRR]

Hi @Sam Chak,

Thank you for your answer. Actually in the reference I posted the spiralInductor() function is used. I cannot create any 3D inductor, only square, circle, hexagon, or octagon planar geometries.

[Sam Chak]

Hi @MRR

Thanks for your reply. I'm not familiar with the geometry of this 3D Inductor. Perhaps there is a way you can improvise from this l = inductance(object,frequency). What would happen to the Inductance if you stack up the spiralInductor of the same shape?

Can you find out from your physical experiments or E&E textbooks?

I'm visualizing the possibility of this:

l1 = inductance(inductor1, frequency);
l2 = inductance(inductor2, frequency);
l3 = inductance(inductor3, frequency);
l4 = inductance(inductor4, frequency);
Total_L = function(l1, l2, l3, l4)