Once you build your physical structure in the project workspace and define an excitation source, you are ready to run an FDTD simulation. The simulation engine will run even if you have not defined any observables. Obviously, no simulation data will be generated in that case. [[EM.Cube]]'s [[FDTD Module]] currently offers several different simulation modes as follows:
# Wideband Analysis# Frequency Sweep
# Parametric Sweep
# Angular Sweep
# R/T Macromodel
# Dispersion Sweep
# Huygens Sweep
# [[Optimization]]
# HDMR