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Phase Noise and Jitter Measurements
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Doubt regarding PNOISE results obtained from Spectre-RF (Read 938 times)
shaikh_sarfraz
Junior Member
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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
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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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