Modelling a 3-port resonator cavity in ADS using s2p files

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Hi, not sure if this is the right place for this thread, but it looked the most appropriate to me. Forgive me if I'm wrong.

I have a 3-port microwave resonator cavity which I have measured using a VNA. I've used ADS before but my knowledge is very limited - I was hoping someone might be able to help!

I have 3 s2p files and I'd like to use them to model the cavity in ADS so that I can a) plot graphs using the data; Smith charts etc. and b) use the model when I come to design a PA.

So how should I go about doing this?

Thanks,

Mike.