OK, I looked over your paper. Could I actually build this from your paper and your single edge node circuit? I am not sure yet, I did not read it three times yet (typically, have to read it multiple times)... but my first impression is that I could not reproduce the papers conclusions. I _feel_ like something is missing. Are you holding off until your provisional patent is approved, or the like? I feel like there is some connecting device/circuitry/something left out...
As you mentioned near the end, you do NOT overcome the bias in the AD5220s? You just accept the error floor??