sheldon
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Chviswanadh,
If you have access to SpectreRF, periodic stability analysis, pstab, was added in MMSIM61. It performs stability analysis on circuits with periodic operating points. I have used it on similar circuits and the results seem reasonable. That is the predicted phase margin seems to track the phase margin predicted by the pulse response. BTW, you could also use periodic ac analysis and back out the stability from the open loop gain and phase.
Best Regards,
Sheldon
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