Noise Suppression of Artificial Intelligence Filter for Radio Frequency Interference

This paper discusses design of area effective radio frequency interference noise reduction for low-pass filter using as switched-capacitor (SC) architecture. For noise suppression, noise via the power/ground lines is a serious issue. One of the noise reduction technique is a fully differential SC insertion, since the time constant of SC filter affects the balance of the supply noise and the ground noise, the noise reduction becomes maximum at a certain time constant. A fully differential SC is adopted via the bilinear transform of the corresponding analogue RLC passive prototype. The proposed SC with artificial intelligence method to reach the largest possible input dynamic range and optimized layout, the method of dynamic range scaling and minimum capacitor scaling is used.