Your lumped source will have an <b>Amplitude</b> of 1V and a zero <b>Phase</b>. This means that the voltage source will excite the dipole with a modulated Gaussian pulse waveform centered at 1GHz with a frequency bandwidth of 1GHz, where the envelope of the signal reaches a maximum voltage of 1V. You will see the lumped source in the middle of the dipole, represented by an arrow pointing in the +Z direction.
==1.6 Grid Settings & Mesh Generation==
==Grid Settings & Mesh Generation== EM.Cube’s [[FDTD Module]] generates a Yee mesh of your physical structure. The mesh properties can be accessed by clicking the <b>Mesh Settings </b> [[Image:fdtd_lec1_13_meshsettings.png]] button of the Simulate Toolbar (or using the keyboard shortcut <b>Ctrl+G </b> or via the menu <b>Simulate → Discretization → Mesh Settings</b>). For this tutorial, accept the default value of 20 Cells/eff &lambda<sub>eff</sub> for <b>Minimum Mesh Density</b>.
[[Image:fdtd_lec1_13_meshsetting.png|center]]
To view the mesh, click the <b>Show/Generate Mesh </b> button of the Simulate Toolbar (or alternatively use the keyboard shortcut <b>Ctrl+M</b>). For this particular project, the mesh view does not reveal much because the mesh of a vertical line object conforms to the grid. In general, the mesh view shows how the simulation engine sees your physical structure. You can also display the three mesh grid planes by right clicking on one of the three items XY Grid Plane, YZ Grid Plane, or ZX Grid Plane in the “Discretization” section of the Navigation Tree and selecting <b>Show </b> from the contextual menu. To remove the grid planes from the project workspace, open the same contextual menu and select <b>Hide</b>.
[[Image:fdtd_lec1_14_gridplane.png|600px|center]]