[sdiy] passive ring modulator transformers

[mskala at ansuz.sooke.bc.ca]

On Sun, 17 Jan 2016, Magnus Danielson wrote:
> In another context, we concluded that there seems to be around 30 dB better
> S/N possible with diode mixers compared to the Gilbert-cell mixer of MC1496

> While the experience was in the RF field, basic properties should translate
> down to audio frequencies.

Is that with or without harmonics?  RF applications tend to be rather
narrow-band, so that harmonics from the diode switching, of which there
are a lot, will end up getting filtered and probably not counted towards
the S/N ratio.  But the original poster here was hoping for three decades
of bandwidth, and then it matters whether you count the harmonics from the
switching as part of the signal or part of the noise, either of which
might make sense depending on what you actually want in the output.

-- 
Matthew Skala
mskala at ansuz.sooke.bc.ca                 People before principles.
http://ansuz.sooke.bc.ca/