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Doubt regarding PNOISE results obtained from Spectre-RF (Read 916 times)

shaikh_sarfraz Junior Member Offline Posts: 17	Doubt regarding PNOISE results obtained from Spectre-RF Dec 29^th, 2009, 6:40am Hi, What sort of spectral density is obtained when we do Pnoise analysis. Is it power spectral density of phase or is it power spectral density of voltage? Best Regards Sarfraz
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pancho_hideboo

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Re: Doubt regarding PNOISE results obtained from Spectre-RF
Reply #1 - Dec 29^th, 2009, 7:09am

shaikh_sarfraz wrote on Dec 29^th, 2009, 6:40am:

What sort of spectral density is obtained when we do Pnoise analysis.
Is it power spectral density of phase or is it power spectral density of voltage?

Small signal noise analysis subjected to master steady state large signal analysis give voltage noise, that is, small signal mixing or folding noise.
This is true for any vendor's simulator.

Just we can decompose this voltage noise to AM and PM noises. That's all.

See my appends in the followings.
http://www.designers-guide.org/Forum/YaBB.pl?num=1244213153/6#6
http://www.designers-guide.org/Forum/YaBB.pl?num=1260521995
http://www.designers-guide.org/Forum/YaBB.pl?num=1050465395

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Andrew Beckett Senior Fellow Offline Life, don't talk to me about Life... Posts: 1742 Bracknell, UK	Re: Doubt regarding PNOISE results obtained from Spectre-RF Reply #2 - Jan 5^th, 2010, 1:27pm See also the discussion in http://www.cadence.com/community/forums/T/14375.aspx - ah, it's the same requestor. Regards, Andrew.
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