[time-nuts] Spice simulation of PSRR and phase noise
Richard (Rick) Karlquist
richard at karlquist.com
Tue Oct 24 19:12:24 UTC 2017
On 10/24/2017 11:10 AM, Hal Murray 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?
This problem came up in the design of the 5071A.
I elected to avoid narrowband filters by using
some tricks described in my FCS paper of about
25 years ago. I didn't find it necessary to ovenize
the output section.
By contrast, the 5061 had numerous narrow band filters
that were problematical.
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