Re: SPICE AC analysis -- multiplying or dividing signals

Hi Helmut,

"Helmut Sennewald" <helmutsennewald@xxxxxxxxxxx> wrote in message
news:efk0um$22p$01$1@xxxxxxxxxxxxxxxxxxxx
It's impossible to multiply or divide two AC-signals in a useful way for
.AC-analysis.
Multiplying two AC-signals would result in doubling the frequency.
This is not the concept of the AC-analysis in SPICE. AC-analysis is a pure
linear analysis by definition.

Hmm... I think I see what you mean. However, I don't want to perform
"instantaneous" mixing, as you suggest, I just want to multiple two phasors
(complex numbers) together at each frequency point to get a new one. I'm
thinking there's no way to set up the matrix in AC analysis to try to solve
for V(node1)*V(node2), yet of course once V(node1) and V(node2) are known it's
trivial to calculate V(node1)*V(node2) using the post processor. I guess I'll
settle for that.

I suppose this is why the traditional "voltage controlled voltage source" can
only multiple by a constant...

---Joel


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