Impedance Boundary Conditions in 2D Extractor

For 2D Extractor models, every conductor set to Solve on Boundary or Automatic must have Impedance Boundary Conditions (IBCs) if it is one of the following types:

• Signal Line
• Non Ideal Ground
• Reference Ground
• Floating Line

You can define Impedance Boundary Conditions (except for on perfect conductors).

If Impedance Boundary Conditions are not specified on all edges of the conductor, the software creates implicit conditions on those edges.

The implicit IBC parameters are:

• Surface Roughness – this is taken to be equal to zero.
• Coating Thickness – this is taken to be equal to zero. For implicit processes, the solution is solved using the conductor thickness specified.
• Coating Material – the same material is used as the base object.