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S parameter artifacts in cadence (Read 56 times)
iVenky
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S parameter artifacts in cadence
Jul 07th, 2018, 11:53am
 
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?

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Andrew Beckett
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Re: S parameter artifacts in cadence
Reply #1 - Jul 10th, 2018, 9:56pm
 
How are you importing the s-parameters? I assume you mean that you're using the nport component in analogLib and simulating in spectre? If so, which spectre and IC version are you using, what is the source of the s-parameters (what do they represent) and knowing what the options specified on the nport would help (perhaps you can post the line in the spectre netlist containing the nport).

Having some idea of the range of frequency sample points in the s-parameter file, how they are spaced, and what the typical frequencies in your circuit are likely to be (including harmonics).

Sorry about the large number of questions, but you provided very little information to allow the issue to be diagnosed.

Regards,

Andrew.
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