High Frequency Approximation Skin Effect
This option adds a high frequency approximation skin effect.
![](../../../../../../images/feko/user_guide/editfeko_cards/dialog_sk2.png)
Figure 1. The SK - Add a skin effect (finite conductivity) dialog.
Parameters:
- Thickness of elements
- The thickness d of the surface elements in metres (if an SF card is present, this is always scaled).
- Material label
- Label of the material which will be used (as specified in the DI card).
The required parameters are: , and (defined with the DI card). If applied to surfaces then also the thickness d is required.
- A good conductivity is required, satisfying the condition .
- For wires the skin depth must satisfy the condition where is the wire radius. The surface impedance is given by .
- For metallic surfaces the skin depth must satisfy the condition . The surface impedance is given by .