CST2013: Renormalize S-Parameter

Post Processing: Signal Post Processing S-Parameter Calculations Renormalize S-Parameter...

S-Parameters are calculated for every port, or every input/output channel of the project; these always have a reference impedance. This dialog box offers recalculation with a new reference impedance; therefore, all of the ports including the reference impedances are listed. For a full recalculation, the complete set of s-parameters is necessary. Anyway, a recalculation on a subset of S-Parameters can be done if all port modes that were not excited are excluded.

(To calculate all S-Parameters, enter the Transient Solver dialog box and select All in the Port entry field.)

To assign a new reference impedance to a port, select it in the List of Ports, enter the new impedance value in the New Z Norm field, and finally press RETURN to set the value.

List of ports

The List of Ports gives you an overview of all the ports.

Several characteristics are listed here, such as port number, mode, mode type and the related impedances.

Port

In this column, the port number identifying the port is displayed.

Mode

The mode pattern for which S-Parameters and reference impedance are calculated is listed here.

Type

The mode type which can be one of the following : TE, TM, TEM, Quasi TEM and Unknown, is added here.

Z-Wave

The wave impedance (E/H) is listed here.

Z-Line

The line impedance for TEM and Quasi TEM modes is listed here.

Z-Normalize

The currently used reference impedance is shown here.

N Flag

The N–Flag shows you whether or the reference impedance varies with frequency (VAR) or not (CONS).

Normalization Imp.

Enter a new reference impedance for a previously selected port here. The new reference impedance is set as soon as the RETURN key is pressed.

Unnormalize

Resets each reference impedance to its original value.

OK

Accepts your settings and leaves the dialog box.

Cancel

Closes this dialog box without performing any further action.

Help

Shows this help text.