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Oscillator simmulations

Question asked by BSEDANO on Jan 24, 2007
Latest reply on Jan 25, 2007 by wrivas
I am simulating a varactor-control-oscillator. At the begining I have put a source to perturb with a pulse the circuit and make a transient simulation. According to this simulation I get the oscillator works in a range of varactor tuning.

Then I am trying to make an harmonic balance simulation (with an OscPort) but I don´t get the oscillator works. The error of simulation is: "Cannot increase oscport level to set loop gain to 1".

I don´t know why the oscilletor doesn´t work with the harmonic balance if I have got that it works with the transient simulation.

I try to put the OscPort in difference places