[time-nuts] Does doubling a frequency alter the original ADEV of the frequency?

Bob Camp kb8tq at n1k.org
Sat Jul 9 19:54:34 EDT 2016


The simple answer is that most doublers that are ok for phase noise will not degrade ADEV. 
The issues with ADEV come when your doubler is out in a changing environment and your 
oscillator is not ( = it’s an OCXO). The answer to that problem is pretty simple if you have an issue …
ovenize the doubler.


> On Jul 9, 2016, at 3:48 PM, James Robbins <jsrobbins at earthlink.net> wrote:
> Would doubling the frequency of a 5 MHz oscillator to 10 MHz affect (or degrade) the natural ADEV of the 5 MHz oscillator?  If so, how does it affect the original ADEV?  Is there a preferred frequency doubler circuit which would do the least harm to the ADEV of the oscillator?  The signal can be a square wave and does not need to be a sine wave.  Thanks.  Jim Robbins
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