[time-nuts] SMD TADD-1 distribution amplifier - seeking comments and suggestions?

Bruce Griffiths bruce.griffiths at xtra.co.nz
Mon Dec 21 21:41:42 UTC 2015


1/2 power for AM plus 1/2 power for PN plus another 1/2 to convert from DSB to SSB.
Bruce
 

    On Tuesday, 22 December 2015 9:05 AM, Anders Wallin <anders.e.e.wallin at gmail.com> wrote:
 

 > > AD8055 in non-inverting circuit with 1+2k7/2k7 gain has 9.6 nV/sqrt(Hz)
> > input-referred voltage noise PSD (if I calculated correctly..)
>
> With +10dBm input the corresponding SSB PN floor should be  around
> -163dBc/Hz.
>

HI,
How is that calculated? I only get this far:
9.6nV/sqrt(Hz) into a 50R load is 1.8e-18 W/Hz or -147.3 dBm/Hz

what then? split half-and-half into AM and PN, and how to relate that to
the carrier power +10dBm?

thanks,
Anders
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