[time-nuts] FE-5680A's suitability for use as a 10 MHz reference for microwave transverters

Javier Herrero jherrero at hvsistemas.es
Thu Feb 9 07:03:40 UTC 2012


El 09/02/2012 01:40, Bob Camp escribió:
> Hi
>
> Here is a little more on how much of a problem you have.
>
> If you would like the spurs to be down 70 dbc at 10 GHz. They go up by 20 log N. in this case N is 1000. That gets you 60 db. Spurs at 10 MHz would have to be down at -130 dbc to make it at 10 GHz.
>
As a side note (since I've just asked by), does the phase noise also go 
up by 20 log N when multiplying?

Regards,

Javier




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