[time-nuts] tutorial on phase noise and PLLs?

Jim Lux jimlux at earthlink.net
Thu Dec 4 22:59:47 EST 2014

On 12/4/14, 2:59 PM, Magnus Danielson wrote:
> Jim,
> On 12/04/2014 08:41 PM, Jim Lux wrote:
>> I'm looking for a real short (3-4 slides or a website, really)
>> description of why the phase noise of a PLL (microwave) looks the way it
>> does, explaining (in sort of qualitative terms) how the phase noise
>> transitions from the VCO (outside the loop bandwidth) to the reference
>> (inside the loop bandwidth)..
>> And in particular, what the phase noise curve looks like if the loop
>> bandwidth is chosen incorrectly, or if the VCO or reference has more or
>> less noise than expected.
>> I figured before I wrote one up, if someone knows of one that's already
>> out there, I could just point people to it.
> I could not find any useful presentation out of Enrico's large
> collection, but he and Ulrich is my usual suspects.

yeah, that's where I looked first..

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