Dear Ulrich,
Indeed. I think it's really not meaningful of saying it is additive,
just as it is not meaningful to say residual. Any buffering/amplifying
stage will add phase noise (and amplitude noise). We will have
conversion between AM and PM to some degree. For higher quality stuff,
the levels are very low such that qualitative measurements becomes very
hard, at least compared to oscillator measurements, also it is to it's
nature a differential measurement, so the topology will be different.
The most sensitive measurements I've seen use interferometric or
cross-correlation techniques, as Enrico shown. You have any further
insights?
Cheers,
Magnus
On 07/13/2015 03:10 PM, KA2WEU--- via time-nuts wrote:
This is a misnomer, it should be called "additive"phase noise. Think of a
"noise free" oscillator with a buffer stage. This stage because of AM/PM
conversion under large signal condition adds noise, makes the over all system
noisier..
Ulrich Rohde
In a message dated 7/13/2015 8:31:19 A.M. Eastern Daylight Time,
[email protected] writes:
Hi all,
I am looking on Wikipedia a description of the Residual Phase Noise but
this page do not exist.
Can some one of the time-nuts expert write a full description of this
physical aspect for Wikipedia?
thanks,
Luciano
[email protected]
www.timeok.it
Message sent via Atmail Open - http://atmail.org/
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