[time-nuts] DMTD - analog multiplier vs. diode mixer ?
bruce.griffiths at xtra.co.nz
Tue Jan 5 15:07:17 EST 2016
The noise of such Gilbert cell based analog multipliers far exceeds that of the traditional mixer.
On Wednesday, 6 January 2016 9:01 AM, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
My little HP5065 project is continually running into the jitter of
my HP5370B counter which is annoying me, so I'm looking int DMTD.
Everybody seems to be using traditional diode-mixers for DMTD,
and to be honest I fail to see the attraction.
Why wouldn't a analog multiplier like AD835 be better idea ?
What am I overlooking ?
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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