Hi all,
I've been trying to simulate a simple differential LC oscillator, the one that is explained in Spectre PSS tutorial. However, it gives me positive phase noise at low frequency offsets(~ +50dBc@10Hz), (it gives acceptable negative phase noises for high frequency offsets: -130dBc@1MHz though).
I thought it might be because it couldn't find the exact fundamental freq. So, I gave it the exact fundamental tone I extracted from transient analysis. It didn't work...
Does anyone know if this is a Spectre problem or there is sth wrong with my simulation/circuit?
Hassan