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Passivity violation in S param file

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Hi everybody, 

I am designing LNA  whose testbench uses some S-parameter files for off-chip components from vendors(L,C, balun...). the warning arises as in the logfile below 

I think that it is due to the frequency range in S-param files does not go down to 0 frequency point or even not close to such the lower point (10 Mhz or  1Mhz..) . It is tough to change it without each component measurement..

Is that affect the accuracy of frequency response and other merits at other frequencies ( in terms of gain, noise, and oip3....).. I am aware that a violated passivity of S-param can possibly impact on stability and causality at a single frequency point (correct me if I'm wrong). 

Thanks, 

Binh Ngo


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