How should I set thickness in the face media property window ?

In Feko, I can choose "thickness" when entering a media for one of my layers :

Should i set it to be of the thickness of my antenna ? For example, my antenna here is a flat metallic sheet of 1mm of thickness.

Is 1e-3 the right parameter here ?

Thx !

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Shannon_Mistry

Hi @degleve ,

The Thickness field in the Face Medium Property represents the thickness of the "material layer" that the face medium simulates. It lets you simulate thin materials without creating a full 3D volume.

If your antenna is flat metallic sheet made of copper, then yes, you can set the thickness of 1e-3 in the face medium.

Regards,

Shannon Mistry

degleve

Hello,

Thanks a lot for answering.

But so in the case of a mettalic cube of side 5mm, should i still set 5mm ?

I do not really understand what is this thickness variable for.

Also, I wish to make an antenna whose thickness is smaller than the skin depth. How am I supposed to process ? I understand the specified thickness here should be greater than the skin depth.

Thanks a lot,

Pierre

degleve

Oh and finally, I can read this error message when specifying thickness to the one of my antenna :

"
Triangle number: 10
Thickness: 5.00000E-04
Lateral dimension: 2.27696E-04
WARNING 2757: A triangle is too thick as compared to the lateral dimensions for application of the skin effect approximation
WARNING 32383: Further warnings 2757 will be suppressed

So I guess it means the skin depth computations are not done for these triangles, and that :

"Further warnings 2757 will be suppressed" means it concerns all my triangles ?

Thanks,

Pierre