Visjnoe
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Dear all,
when simulating the phase noise of an oscillator + CMOS buffer it turns out that the wideband phase noise is dominated by contributions of the CMOS buffer. The simulator returns a phase noise floor of -160dBc/Hz (broadband noise). Can the simulator be trusted to resolve such low levels accurately (assuming accurate device models)?
I would say yes, but I would like to hear if someone thinks otherwise. The reason for asking is a discrepancy between measurements and simulations. Assuming a phase noise floor of -150dBc/Hz would lead to agreement between measurements and simulations. Personally, I think 10dB is a huge difference so I don't think simulator inaccuracy is a likely cause...
Regards
Peter
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