[time-nuts] Close in phase noise of microwave VCOs

Attila Kinali attila at kinali.ch
Thu Jun 18 02:36:08 EDT 2015

Moin Rick,

On Wed, 17 Jun 2015 13:08:04 -0700
"Richard (Rick) Karlquist" <richard at karlquist.com> wrote:

> Having said that, if an ordinary engineer had asked me this question,
> I would think that he needed some coaching on how to clean up the
> VCO with a synthesizer of sufficiently wide loop bandwidth.  However,
> you are very knowledgeable, so I will assume you are going to do
> that and just want to predict the phase noise after clean up.  The
> trick (as most time nuts know) is to use a small enough capacitor
> in the loop filter so that you get clean up at a 40 dB/decade rate
> so you can actually make some headway against the 30 dB/decade
> 1/f slope.

Do you have any recomendation, where an ordinary engineer could
read up on this topic?

			Attila Kinali

I must not become metastable. 
Metastability is the mind-killer.
Metastability is the little-death that brings total obliteration.
I will face my metastability. 
I will permit it to pass over me and through me. 
And when it has gone past I will turn the inner eye to see its path. 
Where the metastability has gone there will be nothing. Only I will remain.

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