Hi, Many thanks for those references. Downloaded and stored for future reference and reading.
Check out US4358741 and US4417352. Cheers, Magnus On 2020-01-02 18:10, Anders Wallin wrote: > fwiw, looks like the spectradynamics patent expired today: > https://patents.google.com/patent/US6278330B1/en > afaik that design (more or less) is also described in > https://doi.org/10.1109/FREQ.1998.717932 > a variation is also https://doi.org/10.1109/EFTF.2012.6502322 (which might > be sold by http://www.skk.it/index.htm - but that website is a bit > spartan..) > (if anyone knows more micro-stepper papers, please post!) > > my plan is to present our DIY version of this, an open hardware design, at > EFTF2020. > we have two AD9912:s clocked at 1GHz (derived from the maser) producing two > LO's that drive a mixer-board that locks an OCXO that feeds a PICDIV. > > Anders > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.