Multi-path filters robust to substrate noise and nonlinearity

This paper proposes structures of multi-path filters robust to substrate noise and nonlinearity of elements under low supply voltage to achieve wide dynamic range. They are derived by combining two structures which have been known to suppress substrate noise and nonlinearity more than the balanced one. Dynamic ranges and substrate noises of three proposed structures, the balanced (two-path) one, and the single ended (one-path) one are examined and simulation results show that the proposed structures reduce substrate noise and nonlinearity more than the conventional structures.