How to save an S2P output file from a cascade circuit with different port impedance

For a cascaded circuit with different port impedance or not 50 ohms ports, the output file generated using NPORTF does not match with the original S-parameter or graph.

To resolve this mismatch and generate an output file that matches the original data, do the following steps:

1-  Right-click Graphs and select New Graph. Select Tabular and then click Create and Add New Measurement.

2-  From the menu bar, click Graph > Export Trace Data. Save the data in .txt format. 

3-  Next, edit the header part of the saved .txt data as per AWR Text Data File format.

Now, plot the imported .txt data with the original data; the result will be the same.

Team SimTech

Cadence Design Systems