Your push-pull doubler is much nicer than my full-wave rectifier with Schottky diodes http://g4jnt.com/10MHzDist.pdf
Andy www.g4jnt.com On Mon, 29 Nov 2021 at 15:42, Wilko Bulte <w...@xs4all.nl> wrote: > For those interested, Dave PA5DOF and your's truly are working to get the > doubler implemented that Luciano has on his website. The first PCB > prototype is in and has been built and works OK. Some minor tweaks/fixes > will be added to a V0.2 PCB. If there is interest I can share the Gerber > files. > > The doubler is intended to be hooked up to an Efratom MRK-HLN 5MHz Rb. Our > shack T&M equipment for the best part requires a 10MHz reference. > > Wilko > > > On 29 Nov 2021, at 10:35, tim...@timeok.it wrote: > > > > > > you can use this: > > > > > http://www.timeok.it/wp-content/uploads/2015/08/high-performance-frequency-doublerv1-31.pdf > > > > Luciano P. S. Paramithiotti > > tim...@timeok.it > > www.timeok.it > > > > Da "Matt Huszagh" huszaghm...@gmail.com > > A time-nuts@lists.febo.com > > Cc > > Data Sun, 28 Nov 2021 19:29:58 -0800 > > Oggetto [time-nuts] Lowest noise (phase noise and ADEV) method to > achieve 10 MHz signal from 5 MHz input > > Hi, > > > > I've got a 10 MHz distribution amplifier and am considering purchasing > a > > 5 MHz reference. Most (not all) of my equipment accepts a 5 MHz > > reference, but I'd like to be able to use the existing distribution > > amplifier I have if possible. Therefore, I'm considering ways I might > > generate a low-noise 10 MHz signal from the 5 MHz reference. > > > > An obvious way is to use a doubler. However, as I understand it, even > an > > ideal doubler will add 20log(2)=6 dB of phase noise to the 10 MHz > > signal. It seems like a possibly more expensive, but lower noise way > > would be to use a PLL with a divider that locks the divided 10 MHz > > signal to the 5 MHz input. If the time constant of the loop filter is > > set long enough, does this avoid the phase noise multiplication issue? > > From what I've gathered, this is a technique HP used in some of their > > gear. For example, the 8566 and 8340/1 lock a 100 MHz VCXO to an > > external reference with a PLL. > > > > Any other thoughts on this? > > Matt > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe > send an email to time-nuts-le...@lists.febo.com > > To unsubscribe, go to and follow the instructions there. > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe > send an email to time-nuts-le...@lists.febo.com > > To unsubscribe, go to and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send > an email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
