goldsmith
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There are no oscillations in the present simulation.
I understand that the waveform in post #27 is achieved with input voltage applied. I can't explicitely detect self oscillations.
Sorry for not asking clearly. I was referring to the waveform in post #27. What's your criterion for detecting self-sustained oscillations in this waveform?
Looking on the post #27 waveform again, I'm also confused about the signal frequency. The original circuit has a 100 MHz input source, but I see about 1.5 MHz in your plot.
.
Very clearly, the class C amplifier can't oscillate without some kind of input signal or an additional DC bias. The input matching network has also a high Q, resulting in a slow attack. So it isn't easy to distinguish between regular amplifier operation and self oscillations.
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