Hi Yes, a DDS at high freq./ narrow band crystal filter / divide to low audio / image reject mix with input back to rf / lock to VCXO approach would get around much (but not quite all) of the truncation stuff. It's complex enough that I suspect that ADC approach would give it a "run for the money" ( equal to, or better than bang for the buck).
Bob On Oct 22, 2012, at 7:18 PM, Magnus Danielson <[email protected]> wrote: > On 10/23/2012 12:41 AM, Bob Camp wrote: >> Hi >> >> Modern parts are pretty cool. I have measured them them for this >> application. The truncation still is a big issue. > > If you generate a lower frequency and gear it up in frequency, you would get > better result. It's more or less what the phase micro-steppers do anyway. > > IEM Kvarz also makes micro-stepper BTW. > > Cheers, > Magnus > > _______________________________________________ > 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.
