Dr. Dave: Watch this:
https://www.youtube.com/watch?v=kqFc4wriBvE Then you can Google "injection locked oscillators" --- Graham / KE9H == On Wed, Oct 8, 2014 at 12:10 PM, Dr. David Kirkby (Kirkby Microwave Ltd) < [email protected]> wrote: > There's a discussion on the "ukmicrowave" list about combining the > power from two 10 GHz Gunn oscillators with a magic T. One might > expect to get nearly double the power if the two oscillators are > combined. What people are observing is getting more than double the > power. To quote from > > http://www.bobatkins.com/radio/10GHz_gunn_power_combiner.html > > "Individually, the two oscillators produced 64 and 70 mW, > respectively, but produced a combined power output of 235 mW. " > > Another one > > "The stability of the combined oscillators was found to be higher than > that of the individual oscillators. " > > It is hardly surprising the two lock together in frequency. > > I wonder if people see similar things with pendulums in clocks? I > can't think of any logical explanation for this, but it seems to be > more than an April fools joke. > > What is interesting is someone who just tried it says the current in > the diodes goes down about a mA when combined, so the input power to > the devices go down very slightly. Typically these things run at a few > hundred mA, so 1 mA is likely to be less than 1 %. > > > > Dr. David Kirkby Ph.D CEng MIET > Kirkby Microwave Ltd > Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 > 6DT, UK. > Registered in England and Wales, company number 08914892. > http://www.kirkbymicrowave.co.uk/ > Tel: 07910 441670 / +44 7910 441670 (0900 to 2100 GMT only please) > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
