==Running the FDTD Simulation==
[[Image:fdtd_lec1_19_run.png|right]] At this time, your project is ready for FDTD simulation. Click the <b>Run</b> [[Image:fdtd_runb.png]] Button of the Simulate Toolbar to open up the Simultion Run Dialog. Or alternatively, use the keyboard shortcut <b>Ctrl+R</b>, or the menu <b>Simulate → Runâ¦</b> The simplest simulation mode in EM.Cube is âAnalysisâ. In this mode, your physical structure is taken âAs Isâ and its mesh is passed to the FDTD simulation engine, alnog with the necessary information regarding the soures and observables. An FDTD âAnalysisâ is a wideband analysis by nature depending on your projectâs specified bandwidth. At the end of an FDTD analysis, the port characteristics are calculated over the entire bandwidth of your project. However, some frequency-domain observables like field sensors or radiation patterns are calculated only at the specified frequencies.