[time-nuts] Anybody experienced in using a prescaler as a wideband preamp?

Peter Monta pmonta at gmail.com
Thu Jul 28 20:15:17 UTC 2011


Paul Swed writes:

> I agree this does not make sense. There is a divider in the way so its not a
> preamp.

I'll bite:  what does a small-signal model of a prescaler look like?
As a guess, it might be a (flat? highpass?) attenuator (with a great
deal of loss) up to some threshold amplitude, then above that one
would get the divided output.

But that's with a pure-tone stimulus.  Perhaps a prescaler could be
made to act as a kind of preamp-plus-mixer by pumping it with an LO
just at threshold, then adding in the input signal.  Likely enough,
though, there are better ways to accomplish whatever the system-level
goal is.

Cheers,
Peter




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