Vco oscillate at trans but pss not

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happsky

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cross couple VCO , when simulate using trans ,it oscillte
when pss ,it not ,why??

thank you !
 

Not observing the suggestions for PSS analysis of oscillators in the SpectreRF manual?
 

Did you enable the "oscillator" option in pss settings?
 

And how about tran settings in pss? Can you show to us screenshot with pss settings?
 

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