Hi,
I am doing a phase noise analysis in cadence [ IC6.1.3 ] spectre [ MMSIM7.1 ]
L
Φ plots are inaccurate below the linewidth as it shows more than 0dBc/Hz phase noise which is irrelevant.
I want to obtain a true S
Φ plot in cadence...How can i obtain that ??
As Pancho pointed out earlier in one of his posts,
http://www.designers-guide.org/Forum/YaBB.pl?num=1244213153/6#6 & i quote
Quote:For noisetype="jitter" or "modulated",
you can get LLSB(f), LUSB(f), AM noise, PM noise in "pnoise modulated of Direct Plot Form",
and also you can get Phase Noise in "pnoise jitter of Direct Plot Form" as true SΦ(f).
When i simulate both pnoise sources and pnoise modulated,
I get the same plots for both i.e.
Phase Noise in pnoise option in sources analysis &
Phase Noise in pnoise Jitter option in modulated pnoise analysis.
This is not in accordance with pancho's statement in the above mentioned quote...I am confused again.
Can anyone tell me how to get the True S
Φ plot in cadence ?
--
regards,
Mayank.