Attilla I did look at some of the documents. But none showed practical HF class injection locking. Say as an example a 6 MHz xtal to a 1 or 2 MHz reference. It maybe as easy as a single transistor in the oscillators ground lead. Always on till a brief pulse from the 1 or 2 MHz ref cuts it off. I think I just talked myself into an attempt. Regards Paul WB8TSL
On Sat, Jul 19, 2014 at 7:23 AM, Attila Kinali <att...@kinali.ch> wrote: > On Tue, 24 Jun 2014 21:18:20 +0200 > Francesco Messineo <francesco.messi...@gmail.com> wrote: > > > what would be the best method to try injection locking a butler common > > base crystal oscillator (see figure in > > http://www.eska.dk/oscillator_data.htm for schematic)? > > Any comment about close-in phase noise performance when adding > > injection locking to such oscillators? > > Thanks in advance for any hint. > > Moin, > > I cannot give you performance data, but i can point you at some papers > that deal with injection locking. > > Probably one of the best known papers is from Robert Adler[1]. > It mainly deals with how locking comes to be, what the conditions > for locking are and how to calculate those. > > The other big name in injection locking is Kurokawa Kaneyuki. > His first paper [2] deals, as the title suggests, with noise in > coupled oscillators vs noise in single oscillators. > His second paper [3] deals with injection locking itself, similar > to what Adler did, but with a more "modern" terminology, but also > with more math. > (There are more papers from him on this topic, but i have not had > time to read those) > > Chang et al. did a nice work on locking of multiple oscillators in [4] > and how coupling directions affect them. > > Razavi did a nice rework of earlier findings on injection locking in [5]. > In my opinion, this has one of the easier understandable math in all the > papers i've read on injection locking. Also his liberal use of graphs > simplify the interpretation of the formulas. > > Zhang et al. did a quite nice analysis of noise behavoir of coupled > oscillators in [6]. But my main reason for mentioning it here is > the measurements they made, which might give you an indiciation on where > you might end up with your circuit. > > If you are more on the simulation side, [7] might give you a point to > start how to model injection locking in spice (though, i must say that > is one paper i stumbled upon and probably not the best in that area). > > HTH > > Attila Kinali > > > [1] "A Study of Locking Phenomena in Oscillators", by Robert Adler, 1946 > reprinted in Proceedings of IEEE October 1973 > > [2] "Noise in Synchronized Oscillators", by Kurokawa Kaneyuki, 1968 > > [3] "Injection Locking in Microwave Solid-State Oscillators", by Kurokawa > Kaneyuki, 1973 > > [4] "Phase Noise in Coupled Oscillators: Theory and Experiment", > by Chang, Cao, Mishra and York, 1997 > > [5] "A Study of Injection Locking and Pulling in Oscillators", by Behzad > Razavi, 2004 > > [6] "A Theoretical and Experimental Study of the Noise Behavior of > Subharmonically Injection Locked Local Oscillators", by Zhan, Zhou, > and Daryoush, 1992 > > [7] "Capturing Oscillator Injection Locking via Nonlinear Phase-Domain > Macromodels", > by Lai and Roychowdhury, 2004 > > -- > I pity people who can't find laughter or at least some bit of amusement in > the little doings of the day. I believe I could find something ridiculous > even in the saddest moment, if necessary. It has nothing to do with being > superficial. It's a matter of joy in life. > -- Sophie Scholl > _______________________________________________ > 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. > _______________________________________________ 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.