thank you very much..
but
but
what I want my graph is to draw four different graph of four-patch antennas in a single graph, not even for a system, how to do that?
It is simple if the designs are in the same project.
Use the dataset drop-down list to select the different designs, then add the s-parameter that you want to plot for that design.
If the designs are in different projects, copy/import the dataset files (*.ds) files into one place.