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S-parameter

EMA3D and MHARNESS support calculating the scattering parameters matrix of any arbitrary interconnection structure and exporting it in Touchstone format.The touchstone file can be used in conjunction with a circuit simulator with other elements to evaluate scattering parameters or the time-domain response of a complex circuit.

Before running an S-parameter simulation, ports must be assigned to the model. A separate EMA3D and/or MHARNESS simulation is run for each port defined.

An S-parameter model can be run using either the Integrated EMA3D-MHARNESS solver or a standalone MHARNESS simulation. The S-parameter SPort Image 16 color button is the same in both the EMA3D and MHARNESS panels, and users may select it under either tab.

Start and run an S-parameter simulation

  1. Under the EMA3D tab in the ribbon, click the S-parameter SPort Image 16 button from within the Analysis section.

    startsparam 1

  2. EMA3D will begin pre-processing and generating files necessary for running the simulation. The status of the pre-processing and any errors or warnings will be logged in the pop-up window. If an error appears and needs to be fixed, close out of the pop-up window and address it before re-starting at step 1 of this section.

    start 1

  3. Once the pre-processing is finished, run the simulation by selecting Run in the pop-up window. It is now safe to click the X in the upper-right corner of the pop-up window to close it.

  4. The analysis panel will show the progress and status of the simulation, as well as any runtime errors.

    startfile 3

  5. The S-parameter simulation produces a Touchstone SnP file that can be used in conjunction with a circuit modeler. This file is located in the results folder.

See Also

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