Maybe there are different ways, but this will work:
Put in a schematic the part and simulate its S-par. Then export the result in touchstone format.
Mazz
step 1 ) simulate the S paramter of ur circuit
step 2) in the data window click the icon on data tool
step 3 ) slectt write to file
step 4) select the format touchstone
step 5) select the format if it mag/angle , and the frequqnyc range