hi
 
I want to do some ACsimulation on a schematic which contains some 2-port S-parameter files included.
On the plot, there is a lot of noise or something like that. I think it should be smoother than it is. at some points there is a value 10...100x bigger or smaller then the values at the previous or next frequency poins.
please check the QUCS project: http://www.buenos.extra.hu/download/PowerIntegrityDesign_prj.rar
There is also a document in the rar file about what the simulation is about.
 
why is it?
how can I make the plot to be smoother?
 
regards,
Istvan Nagy