Skin Depth Resistance

This keyword is used to provide the required information for the inclusion of skin depth effects. The required format is:

The thk(i) parameter defines the thickness of the associated conductor. The thickness must always be less than or equal to the associated conductor radius. For shields the thickness constitutes the shield thickness. A thickness can also be applied to conductors. In most cases the thickness for solid conductors should be equal to the associated radius. If the thickness is less than the radius, then the conductor may take on characteristics of a hollow conductor. The skin depth effects implemented, as a consequence of using this keyword, result in an increase of the associated conductor resistance with frequency.