Low Ripple Notch Filter Designs Using Apodized Thickness Modulation. How to make a low-ripple notch filters—a band-stop filter—by reducing side lobes with apodized process. March 21st, 2019 - By: ...

The notch depth then depends on the matching of the resistances used for adding or subtracting the signals. In this Design Idea, the input signal is instead connected to the positive input of U1; the ...