[time-nuts] PLL Phase Noise vs. Divider Jitter

[Stephan Sandenbergh]

Hi

Hi,

I'm aware that they use mixers at higher frequencies, but what are one's
alternatives at low frequencies such as a 10MHz reference?

Regards,

Stephan.




> 
> High frequency PLLs made for low-phase-noise applications typically
> use mixers instead of dividers. They often use a step recovery diode
> to multiply the reference to a frequency near that of the high
> frequency being measured, then mix this multiplied ref with the
> signal and run the difference frequency into the PLL.
> --
> 
> --David Forbes, Tucson, AZ
> http://www.cathodecorner.com/
> 
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