The tuner I mentioned did the cascode specifically to achieve low
noise and the ability to handle big signals with low distortion.
Somewhere in my disorganized archives I think I have more info on it,
but don't ask me to look! ;-) As I recall, they used a transistor
billed for CATV service with low noise and good linearity on the
input, and an RF power mosfet on the output--one of the old Siliconix
VMOS ones?? Haven't looked at it in 30 years, so I hope you'll excuse
my lapses of memory. In general to get low distortion, expect to have
to use fairly high current levels.

Do you have specific requirements? You may well be able to do fine
with a different, simpler design. I'd submit your requirement is not
for a cascode, but for specific TOI and perhaps harmonic performance
and noise level and input and output impedances.

Cheers,
Tom

oUsama (Yuri Blanarovich) wrote in message ...
Thanks for pointers, I will have look at references mentioned.
Another requirement would be good handling strong signals, like using 807 :-)

I am trying to build the converter with strong signal handling capabilities,
low noise and high gain.

Next step is looking at the mixers and low noise synthesizers.

Thanks a bunch!

Yuri, K3BU