Bobby, Originally posted in cdnusers.org by lwang
It should be saved in the working directory and it should be named as s?p(s2p for 2 ports, s4p for 4 ports, etc.). You can use it directly in other tools (such as HSpice, etc.)
If you want to use S-parameter via model thru HSpice simulator in SigXp, you can use DML format model. Software will translate for you automatically.
Hoep this helps.