Sean Breheny wrote:
> As for the CB amp, maybe I'm doing the noise analysis wrong, but I'm
> getting that it really is no better than a CE amp for noise. I am
> modeling the voltage noise source as being in series with the base and
> the current noise source between the base and emitter. I'm finding
> that with both CB and CE, the voltage noise source is effectively in
> series with the input signal (obviously so in the CE, and it is also
> true with CB because the base terminal is the "reference voltage" for
> the input).

Hi Sean,

I think that if you don't care about harmonic distortion, you can make
the common emitter amp as noiseless as the common base amp. Note that I
don't have anything to back that up except some preamp design I did
almost 30 years ago using empirical methods.

Cheerful regards,

Bob
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