FSS structure
 
An FSS screen, a rectangule slot, is embedded inside the three dielectric layers. if the width of slot is narrow, the time domain solver will take a very long time to get the convergent transmission coefficient. However, the FSS solver of GEMS package will be very efficient to solve the FSS structure problems.
Problem Configuration
 
FSS Simulation Setting Window
 
FSS Screen Structure
 
Reflection and Transmission Coefficients
 
FSS Structure Sideview