Inductance calculation of a 3D shape

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MRR 2022-5-30

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https://ww2.mathworks.cn/matlabcentral/answers/1729955-inductance-calculation-of-a-3d-shape

评论： Sam Chak 2022-5-30

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

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MRR 2022-5-30

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 2022-5-30

在 MATLAB Online 中打开

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)