[time-nuts] Very challenging phase noise measurement, does anyone have an idea??

Jim Lux jimlux at earthlink.net
Thu Dec 6 02:00:31 UTC 2012

On 12/5/12 2:45 PM, Marek Peca wrote:
>> This last idea is interesting... could be simulated by Matlab or similar.
> It is known to work in ordinary non-linear transistor-based mixers. It
> will produce more messy spectrum than double-balanced mixer, however,
> for this purpose and completely within digital domain, it makes
> absolutely no harm, in my oppinion. On the other hand, simplicity of two
> resistors & ADC may help.

for that matter, fit two sinusoids to the two inputs (which will 
inevitably be at different frequencies, eh?)

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