skrf.tlineFunctions.skin_depth

skrf.tlineFunctions.skin_depth(f, rho, mu_r)[source]

Skin depth for a material.

The skin depth is calculated as:

\[\delta = \sqrt{\frac{ \rho }{ \pi f \mu_r \mu_0 }}\]

See www.microwaves101.com [1] or wikipedia [2] for more info.

Parameters:
  • f (number or array-like) – frequency, in Hz

  • rho (number of array-like) – bulk resistivity of material, in ohm*m

  • mu_r (number or array-like) – relative permeability of material

Returns:

skin depth – the skin depth, in meter

Return type:

number or array-like

References