Tohidian wrote on Apr 15th, 2009, 11:01pm:The oscillator frequency is f0 and that of signal source is f1.
When these frequencies are away enough from each other (for example f0=1GHz and f1=3MHz),
HB simulation results are just like that of transient simulation.
But, when these frequencies are close to each other (f0=1GHz and f1=10kHz),
HB result is different from transient simulation (and in this situation, transient simulation takes long time).
I think f0 and f1 in latter case are away enough from each other than former case.
Don't you have some mistakes ?
Tohidian wrote on Apr 15th, 2009, 11:01pm:These simulations have been done in both ADS and HSPICERF.
Where is the problem about HB?
Show me netlist of ADS.
Show me graphs of results for both HB and Transient.