On 09/19/2010 08:23 PM, francesco messineo wrote:
On 9/19/10, jimlux<[email protected]> wrote:
francesco messineo wrote:
Hi Mike,
as I said, current plans are for a few frequencies in the 20-50 MHz
range. The current project needs 20, 22 and 42 MHz oscillators.
But you're multiplying that up, it will be 20log(N) worse...
no, I'm using these as LO for frequency downconversion. 48, 50, 70 MHz
to 28 MHz in the first prototype.
If you use a 10 MHz OCXO as reference, you will have a 20*log10(50/10)
and 20*log10(70/10) worse phasenoise shift, i.e. 13,98 dB and 16,90 dB
higher phasenoise than the reference.
Cheers,
Magnus
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