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Help in HB Simulation in an autonomous circuit with driving signal input.

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Hi,

I'm simulating an oscillator with a source input to kick-start the oscillation. I tried to plot the the frequency of the output signal Vs. the control voltage. But I have read several posts saying that it couldn't be done with PSS anlaysis. Instead, it could be done using harmonic balanced simulation (HB) as it has "Semi-autonomous" mode.
I have tried HB analysis several times but there was an error :

No convergence achieved with the minimum time step specified.  Last acceptable solution computed at  0s.How to overcome this error?.

Now, knowing that the circuit works in the range [1-4 GHz] how to set-up the harmonic balance analysis correctly?



I'm using virtuoso 6.1.7
hope anyone could help me.
thanks.


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