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- Differential oscillator operation details
Re: Differential oscillator operation details
The cross-coupled pair is just a negative resistance. It's i-v curve
is something like this:
* *-------*-----> v
Place a parallel LC across it and the negative conductance cancels out
the tank's losses and it starts oscillating. Of course the
nonlinearities play a significant role, but the basics are these.
Any oscillator can be analyzed as a negative-resistance + resonator or
unit-gain feedback loop. Some structures are more intuitive from one
point of view others from the other. The cross-coupled oscillator is
intuitive from the negative-resistance pov.
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