
I have been doing preliminary research on one of my projects and would like your feedback regarding the issue.
After probing my detector for sources of noise, I found noise originating from the CD4066 multiplexers. These were old parts, and I decided to replace them with newer, much quieter parts from Ti.
I managed to eliminate some noise, but remained wondering if a better solution existed. I found several possibilities and became fascinated by an unconventional mixer developed by Dan Tayloe.
He invented a scheme where he takes two signals that are 90 degrees out of phase to achieve an output with less than a 1db conversion loss. He's able to recreate an output signal that is highly linear with extremely low noise properties. You may find additional information here and here.
I find it interesting that this approach has not been discussed before since it has the potential to solve one of the few remaining sources of noise. It seems our obsession with low noise has not strayed to unconventional solutions to our remaining problems.
I'm thinking about eliminating the CD4066 mixers entirely and replacing them with a Tayloe Mixer board.
I know the integrator circuit in my detector is masking the most faint of targets.
Can somebody go to this site (here) demonstrating an implementation of the mixer and advice me on whether or not I should proceed with this project?
I have a few projects to complete and need to better manage my limited time.
To the gurus:
Will I waist my time pursuing this project? Any general comments? Suggestions? Type of issues I may encounter? Benefits? Is there a better solution to my noisy CD4066 integrators?
I Thank you
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