[time-nuts] Spice simulation of PSRR and phase noise
jimlux at earthlink.net
Tue Oct 24 23:27:37 UTC 2017
On 10/24/17 11:54 AM, Bob kb8tq wrote:
> If you have the money, almost anything can be (and has been) done. It’s rare to find a
> real world application where this kind of thing is considered cost effective. Fancy
> radar systems are about the only thing that comes to mind. Radar of
> this sort is always high cost / low volume.
Deep Space Network stations or other applications (VLBI) where the
measurement uncertainty is like ADEV = 1E-12 in 1000 seconds. There's a
whole analysis of the temperature effects on the fiber optic
distribution components, for instance - and they're buried 2 meters down.
At "billions of dollars in 1960/1970" I think DSN fits in Bob's high
cost/low volume bucket.
>> On Oct 24, 2017, at 2:10 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
>> aphid1 at comcast.net said:
>>> My applications were broadband. If I remember correctly, aggressive
>>> bandwidth limiting can cause phase shift problems due to temperature
>>> changes unless one is careful in the design of the filter.
>> Does anybody ovenize amplifiers and filters to avoid that problem?
>> These are my opinions. I hate spam.
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