[time-nuts] Close-in phase noise measurements

[Bruce Griffiths]

Shane wrote:
> Wenzel has a setup you can purchase at low cost.  
>
> http://www.wenzel.com/pdffiles1/PNTS%201000/BP-1000-SC.pdf
>
> Phase noise test sets can be pricey... $200K
>   
Shane

Their calibration method is somewhat problematic at the low frequency 
end where the effect of the PLL and the audio amplifier low frequency 
cutoff may be significant.
The NIST calibration technique: 
http://tf.nist.gov/timefreq/general/pdf/1000.pdf is far superior.

Bruce