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