[time-nuts] Re: PLL subharmonic spurs

glen english LIST glenlist at cortexrf.com.au
Sun Feb 6 22:51:27 UTC 2022


This sounds a little off-topic.

If you are interested in harmonics of the reference frequency at the 
input to the phase detector, this will be entirely defined by the 
fourier series of the source. Get yourself a 2nd year EE student, 
they'll have this info for you.

There will also be harmonics and products generated by the phase 
detector inputs, perhaps, since logic gates have to square up rounded 
inputs.

depends what sort of phase detector all the way from full linear 
multiplier to an XOR gate !


glen


On 7/02/2022 9:27 am, mail at vresearch.pt wrote:
> I'm really interested to estimate are multiple of the reference frequency (i.e. at the input of phase detector).

-- 
Glen English
RF Communications and Electronics Engineer

CORTEX RF

Pacific Media Technologies Pty Ltd trading as Cortex RF

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