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Issue with Flicker phase noise simulaiton with PSS+Pnoise in cadence

I have a problem with Flicker phase noise of a quartz crystal oscillator (RLC equivalent cirucit + opamp current amplifier + opamp inverter) simulated with PSS + Pnoise of CADENCE:

Indeed I simulate the phase noise of a quartz crystal oscillator and I include only Flicker noise (verilogA) in the feedback opamp inverter. The simulated phase noise shows white phase noise, f-2 phase noise and f-3 phase noise near the carrier, instead of only f-1 phase noise and f-3 phase noise!

Can you please help me solve this problem?

Best regards

Raphael

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Andrew Beckett over 12 years ago

It would help to see your veriloga model and the input.scs that you are simulating. Much easier than trying to guess what you've done.

Thanks,
Andrew
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Andrew Beckett over 12 years ago

It would help to see your veriloga model and the input.scs that you are simulating. Much easier than trying to guess what you've done.

Thanks,
Andrew
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