[time-nuts] Re: Phase noise with a lock-in amplifier.
david.kirkby at onetel.net
Fri Apr 15 20:39:47 EDT 2005
David Kirkby wrote:
> The outputs from the mixer, assuming the oscillator was perfect would be
> the sum (2f) and difference (DC). But since the oscillator has noise on
> it the noise will not mix to DC since the noise will arrive a
What I mean is the two noise inputs to the mixer will not be correlated
if the cable is long enough.
Dr. David Kirkby,
Please check out http://www.g8wrb.org/
of if you live in Essex http://www.southminster-branch-line.org.uk/
More information about the time-nuts