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Phase Noise simulation with HB and PSS

Hello,

As I simulate the phase noise using the periodic steady state and the harmonic balance tools on spectre, the trend of phase noise and the values change meaningfully, e.g., more than 6 dB at the close-in offsets. This said, for a certain technique, e.g., the HB, by changing the noise sources to modulated noise, the values still change by few dB. The hb simulation should be a more accurate engine to capture the nonlinearity and the harmonics; hence, the simulation should be more accurate. However, since the values change significantly, I am not entirely sure which simulation will give me the most accurate estimation. It is certainly appreciated if you could kindly guide me through this,

Thanks,

Hamid

Andrew Beckett over 9 years ago

Hi Hamid,

Please contact customer support. Without seeing your simulation setup, the versions you're using and the results (and ideally the circuit) it's going to be very hard to answer this.

Regards,

Andrew.
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