Mini-circuits has packaged phase detectors plug-in, surface, and with connectors for $20 TO $70. Diode bridges with transformers. They also have cheap wideband amps. Bet a simple DDMTD could be built with these? I know...I wish I did have the time at present. Happy New Year! Don
Magnus Danielson > With some sine-to-square conversion as signal conditioning, not too hard > these days, this could be a relatively straight forward approach. > CERN already have digital clocks, so the DDMTD approach fits them well. > > For normal mixers you want to signal condition the signal prior to the > mixers, and then signal-condition the beat notes too. > > For DDMTD you do the same, but you do the post mister conditioning in > the digital domain. > > I have always assumed that signal-to-noise have been the main difference > between the Gilbert cell multiplies vs. diode mixers. > > Cheer1s, > Magnus > > On 01/05/2016 09:19 PM, Bruce Griffiths wrote: >> You could also consider a DDMTD as useed in CERN's White rabbit >> project.Apart from the sine to logic level conversion its all digital. With >> care in the design the jitter should be sub picosecond. >> Bruce >> >> >> On Wednesday, 6 January 2016 9:01 AM, Poul-Henning Kamp >> <p...@phk.freebsd.dk> wrote: >> >> >> My little HP5065 project is continually running into the jitter of >> my HP5370B counter which is annoying me, so I'm looking int DMTD. >> >> Everybody seems to be using traditional diode-mixers for DMTD, >> and to be honest I fail to see the attraction. >> >> Why wouldn't a analog multiplier like AD835 be better idea ? >> >> What am I overlooking ? >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > -- Felix qui potuit rerum cognoscere causas. Lucky is he who has been able to understand the causes of things. Virgil ------------------------------- "Noli sinere nothos te opprimere" Dr. Don Latham, AJ7LL Six Mile Systems LLC, 17850 Six Mile Road Huson, MT, 59846 mailing address: POBox 404 Frenchtown MT 59834-0404 VOX 406-626-4304 CEL 406-241-5093 Skype: buffler2 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.