Screenshot of Apply Circuit Simulation menu.

XF's post-processing option allows users to combine a schematic and FDTD simulation in order to see steady-state full-wave results with the schematic applied. In order to use this post-processing simulation, users must first run an FDTD simulation that collects S-parameters and discrete frequencies of interest, then create a schematic that includes an FDTD block component.

When a schematic is applied to an FDTD simulation, the following steady-state full-wave results will update:

Users can apply a schematic to FDTD results through the Simulations window by choosing Post ProcessingApply Circuit Simulation as the Create Simulation option in the upper-left corner.

In the Create Circuit Post-processing Simulation window that opens, the Name field at the top of the window provides space for a user-defined simulation identifier. This name appears in the Simulations window once the simulation is created, and can be used to filter results in the Results browser.

Schematic Tab

Screenshot of Schematic tab.

The Schematic icon. Schematic tab allows users to specify the schematic and FDTD simulation to combine, as well as select one or more operating modes from the schematic.

The Schematic drop-down menu lists schematics that are saved to the current project. This selection determines which FDTD blocks and operating modes are available.

The FDTD Block drop-down menu lists FDTD blocks that belong to the selected schematic.

The Operating Modes list allows users to specify which of the selected schematic's operating modes to apply when the circuit and FDTD results are combined. The (Default Circuit State) represents the component values as they are defined in the schematic's workspace tab.

Two buttons above the Operating Modes list control its contents:

Notes Tab

Screenshot of Notes tab.

The Notes icon. Notes tab provides space for users to attach memos to the simulation, such as a brief description of its specifications for later reference. When a note was attached to a previous project, the Use Last button is enabled and allows users to apply that same note to the current simulation setup. Once the simulation is created, these optional notes appear in the notes tab of the simulations window, and are editable in that window by right-clicking on the desired simulation and selecting from the menu.

Create Simulation

Unlike the other simulation types—FDTD, response matrix, array optimization—applying a circuit simulation does not kick off a separate executable. Instead, post-processing applies the schematic to the full-wave FDTD results in real time when results are accessed.

Screenshot of Done buttons.

Three buttons provide options for completing the simulation setup: