HFSS15: Renormalize Terminals from the Port Level

1. Double click the wave port in the Project tree to display the Properties window for the wave port and select the Post Processing tab.

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Values here affect S-Parameters only. Port Renormalization choices include:

• Do Not Renormalize (the default). Selecting this disables the Impedance fields for the port and terminals.

• Renormalize All Terminals. The default impedance for re-normalization of each port is 50 ohms. To specify a different impedance, you must open the Properties for the terminal and specify a value in the Terminal Renormalizing Impedance field.

If you want to enter a complex impedance, enter it in the following form: <re> + <im>j

• If there are multiple modes, Renormalizing Impedance for Specific Terminals is enabled. Click this to enable the Edit Terminal Impedances button. This opens an editable table with the impedances for each terminal.

2. Enter the Deembed distance in the Distance field or draw a line on the model to represent the distance and get it graphically. You can also assign a variable in the Distance field

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Important: After you enter the value, a blue arrow depicts the dembedding distance in the graphics window when the port is selected. When a waveport has been defined on a sheet, the inward or the outward normal will dictate the direction of the arrows. The orientation of the deembedding arrows in the modeler is determined by the direction of the normal of the face where the port is defined upon. From the standpoint of the S-parameters what is correct is the sign of the deembed distance.

Note: A positive distance value will de-embed the port into the model. A negative distance value will de-embed the port out of the model.

3. For HFSS Transient solutions, you can designate a port as Active or Passive.