[Premium-Rx] The new R&S EM510 Direct-Sampling HF Receiver

Clemens Paul cpaul at gmx.net
Sun Feb 18 14:32:59 EST 2007


>... the phase noise is that of a single
>crystal oscillator at circa 100 MHz.  (Or the ADC's inherent process noise,
>which I imagine is a bit worse.)
>-- john, KE5FX

According to the R&S engineers the phase noise comes mainly from the ADC clock
while the aperture jitter of the ADC adds only little phase noise.

R&S uses an ADC from Analog Devices with a sampling rate of around 80MHz.

Maybe it might be custom designed because there have been meetings between top engineers 
from R&S and Analog Devices during the development.
But that's speculation.

Clemens

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