[time-nuts] ensemble oscillators for better stability

Bruce Griffiths bruce.griffiths at xtra.co.nz
Sun Dec 30 09:44:35 UTC 2012

Tom Knox wrote:
> Dual oscillators in Cross Correlated
> measurements will also produce a 3dB theoretical reduction in a Phase
> Noise measurement system.
Since when?
Its way better than that.
I routinely achieve a PN floor below -170dBc/Hz (I don't have an OCXO 
with a phase noise floor below ~ -175dBc/Hz) using a pair of oscillators 
each having a PN floor (~ -150dBc/Hz) well above that


More information about the time-nuts mailing list