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Discussion of precise time and frequency measurement

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DIY Low offset Phase Noise Analyzer (Erik Kaashoek)

MM
Mike Monett
Fri, Jul 8, 2022 5:44 PM

You wrote:

On Tue, July 5, 2022 5:27 am, Mike Monett via time-nuts wrote:

The phase-frequency detector has zero ripple at lock.

The PF detector also locks at 0 degrees offset.  How do you get the
demodulated phase noise out of that?

[...]

Chris Caudle

The phase noise is contained in the PFD DC output signal. You extract it
the same way as the output of the double balanced mixer.

Mike

You wrote: > On Tue, July 5, 2022 5:27 am, Mike Monett via time-nuts wrote: >> The phase-frequency detector has zero ripple at lock. > The PF detector also locks at 0 degrees offset. How do you get the > demodulated phase noise out of that? [...] > Chris Caudle The phase noise is contained in the PFD DC output signal. You extract it the same way as the output of the double balanced mixer. Mike