good info Rick
ROY - I have spiced up in LTSPICE a doubler and 4 harmonics which you
can vary the amplitudes of the harmonics in the current sources I1, I2,
I3, I4. There is a basic tank circuit on the output which you can
connect/ disconnect etc.
www.cortexrf.com.au/5_meg_doubler.asc
Rick , you are right.... the harmonics on the source really do mess with
it...
you could also do a digital frequency doubler. that's easy, dependson
ur jitter spec...... . or a PLL using a DBM as a phase detector with a
regenerative divider if you really want to knock yourself out..... many
cats and skins....
cheers
On 18/07/2019 11:54 PM, Richard (Rick) Karlquist wrote:
The 5071A has a chain of doublers from 10 to 320 MHz.
One thing I learned in designing this is that it
is important to drive the doublers with pure sine
waves. It might seem like if I double from 10 to
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