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Design >> RF Design >> phase noise sim with spectre 6.0
https://designers-guide.org/forum/YaBB.pl?num=1169474004

Message started by chenyan on Jan 22^nd, 2007, 5:53am

Title: phase noise sim with spectre 6.0
Post by chenyan on Jan 22^nd, 2007, 5:53am

In vco phase noise simulation with spectre I always get this warning:

The Floquet eigenspace computed by Virtuoso(R) Spectre(R) PSS analysis appears to be ill-defined. PNOISE computations may be inaccurate. Consider re-running the simulation with smaller reltol and `method=gear2only'.

I did everything as suggested, but could not solve this problem.

Does anyone have the same experience and solution to that? Thanks!