> > > The Symmetricom 5120A does something very clever to alleviate this > > > problem. Explained in US patent 7,227,346 and "Direct-Digital > Phase-Noise > > > Measurement"; J. Grove, J. Hein, J. Retta, P. Schweiger, W. Solbrig, > and > > > S.R. Stein; 2004 IEEE International Ultrasonics, Ferroelectrics, and > > > Frequency Control Joint 50th Anniversary Conference, pages 287-291. > > > > > > Joe > > > > > > > > I've read the patent. > > The paper is also worthwhile, and available on the web somewhere (don't > recall where, but google found the pdf). I had to read the patent > multiple times to figure out what's going on. The correlation > approach is > old as the hills, and only the digital phase detector was patentable.
If you find a link to the Grove paper that's not behind an IEEE paywall, please post it. I'd like to read that one. -- john, KE5FX _______________________________________________ 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.
