[time-nuts] Basic regenerative-divider questions
jmiles at pop.net
Sat Sep 29 18:26:25 EDT 2007
Yep, but usually they're not quite _that_ nonlinear. :) I'm used to
thinking of mixers as linear devices, from the IMD/IP3 perspective.
I'll build up the 4:1 divider from the Gupta paper as soon as I have time,
and see how it works...
-- john, KE5FX
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Bruce Griffiths
> Sent: Saturday, September 29, 2007 2:56 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Basic regenerative-divider questions
> ); SAEximRunCond expanded to false
> Errors-To: time-nuts-bounces+jmiles=pop.net at febo.com RETRY
> John Miles wrote:
> >> Did you experience the start of oscillation also as you went from
> >> +3 dBm to
> >> +4 dBm? The impulse may be part of getting the oscillation running.
> > No; nothing happens until the +4.8 dBm to +4.9 dBm transition.
> There is no
> > hysteresis at all; the output vanishes upon falling back to
> +4.8. It's an
> > interesting effect, to see such a pronounced on-off transition
> arising from
> > a few basic linear components!
> > -- john, KE5FX
> However the regenerative loop includes a mixer which itself is
> inherently nonlinear.
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