[time-nuts] Spice simulation of PSRR and phase noise

jimlux jimlux at earthlink.net
Tue Oct 24 19:27:37 EDT 2017


On 10/24/17 11:54 AM, Bob kb8tq wrote:
> Hi
> 
> 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.



> Bob
> 
>> 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.
>>
>>
>>
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
> 




More information about the time-nuts mailing list