EM Simulation Overview for IHP SG13G2 OPDK¶ February 2026 Contents Introduction Solver methods Which solver method is better for my model? Workflows using Python model script gds2openEMS workflow (FDTD) gds2palace workflow (FEM) Graphical user interface: EMStudio Graphical user interface: setupEM S-Parameter port de-embedding Port de-embedding in Palace workflow Port de-embedding in openEMS workflow Lumped model and SPICE model extraction Lumped model fit Black box vector fit Viewing S-simulation results S-parameter viewer in qucs-s Python script „plot_snp“ Python script „plot_inductor“ GDSII geometry cleanup prior to simulation gds_removefill gds_simplify gds_prepare_for_EM Some example simulations mpa_core OpenEMS simulation Palace simulation Inductor 400pH @ 40 GHz OpenEMS simulation Palace simulation Butler matrix 93 GHz OpenEMS simulation Palace simulation Stacked Technology using openEMS flow