Application89 Transmission Characteristics of Microstrip Line with Multilayer Electrode Boundary Condition

When designing microwave or millimeter-wave circuit, microstrip line is frequently used.
In the higher frequency ranges, transmission characteristics are sensitive to the effect of how closely conductor and substrate are in contact and also to the effect of corrosion protection film.
Electromagnetic solver of Femtet has a function of multilayer electrode.
The function allows setting of thickness and conductivity as body attribute or boundary condition for analysis involving multilayers.
Here is a case study where multilayer boundary condition is applied to analyze transmission characteristics.