On Sun, 23 Feb 2020 14:19:20 -0500 Bob kb8tq via time-nuts <time-nuts@lists.febo.com> wrote:
> Since most mixers also have DC offset issues, it is pretty common to high > pass filter > the signal before you try to hit a limiter. Yes, this can bring in other > issues, but the > net result is commonly a “win”. With a discrete DMTD system, I would recommend using a feedback circuit that ensures the output has 50% duty cycle. This both compensates for the offset from the mixer and offset in the squaring circuit. It also has the advantage of keeping the even mode harmonics low and thus the folding of 1/f noise is limited (or even eliminated). Also keep in mind that Collins overestimates the noise contributions for amplifiers with low gain. Ie the optimum gain for the first stages is higher than Collins formula suggests. Attila Kinali -- <JaberWorky> The bad part of Zurich is where the degenerates throw DARK chocolate at you. _______________________________________________ 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.