I have been trying to simulate injection locked oscillator using HB & HBnoise analysis to get the voltage spectrum & phase noise plot. The ILO is designed such that the current injection is done at the output node of the VCO. On trying to simulate it outside the lock range using HB analysis, HB still converges to the injection current frequency, & plase noise plot is also not satisfactory. With transient analysis, outside the locking range, phenomenon is easily observable, but to obtain phase noise plot using transient noise, I have to simulate for a very long time.
How do I simulate the ILO outside lock range to get the pulled frequency & phase noise plot, using HB analysis?