On 10/03/14 16:33, Anders Time wrote:
A while a go i bought some low phase noise Crystek CVHD-950 and now I want
to meas the phase noise of the oscillators.
Is it best to try to impedance match the output signal and filter and
amplify the hcmos before i feed it in to the phase detector? or Just hope
that the signal is high enough to drive the mixer? What about all the
harmonics? Does it alter the phase noise result?
What phase detector do you have? It depends.
For a DBM you don't want to overdrive it, I expect that to give you
excess flicker noise. I expect overtones to mix with white noise.
What frequency and by the way, what is the rest of the setup?
Cheers,
Magnus
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