[SI-LIST] Spectrum of Noise measure in ADS

[qantrix]

Hello,
I have setup in ADS with a sawtooth generator mimic dc/dc ripple noise come
in.
pcb+package extracted s-parameters(PDN) + caps with parasitics.
when i sweep that setup in the FW domain(AC sweep) I see ferrite bead
creates pole in range of 80-100kHZ.
when i run transient with sawtooth - i see noise amplitude decreased, but I
would like to check the spectrum of resulting noise(and see if some
harmonics amplified by FB-caps pole)

I don't see a function in ADS that can mimic spectrum analyser.
fs() function produce results that hard to interpret

How would you tackle this issue?


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