s-parameter artifacts in cadence

[venn_ng]

I am importing an s-parameter model of a specific block into cadence virtuoso. I see some kind of ringing in the transient simulations. Do you know how to get rid off these artifacts?

 

[BigBoss]

Cadence Spectre Transient Simulation does not like s-parameters due to their discrete sampling features.
If you can, place an equivalent circuit consisting of RLCk elements or decrease sampling step of the s-parameters if it's possible.