The scattering parameters file is one of the most useful information the designer can handle, once it is involved in the analysis of a new RF circuit working in the small signal domain.
Normally the scattering parameter file is part of the inputs used for designing, but it is common to face the necessity of extracting S2P file for an intermediate simulation, to be later used in a following step of the design.
By the time of the publication of this document, QUCS Studio offers the option of exporting in a CSV file type one trace plotted in a diagram as a result of one simulation.
It is important to take note that the information contained in the CSV file is just the trace selected in the diagram. So, in order to get the 8 traces that compose the whole information archived in the S2P file as it is defined, this process should be repeated eight times.
In the document linked in this entry, it is presented a quite simple way of getting the whole S2P into one file in one single time. It is based on the usage of the OCTAVE capabilities included as nominal in QUCS Studio.