Chebyshev Type I Filters

The Chebyshev Type I Filter is the filter type that results in the sharpest pass band cut off and contains the largest group delay. The most notable feature of this filter is the ripple in the pass band magnitude.

A standard Chebyshev Type I Filter's pass band attenuation is defined to be the same value as the pass band ripple amplitude. However, Filter Solutions allows the user the option of selecting any pass band attenuation in dB's that will define the filters cut off frequency.

Filter Solutions also offers the user the option of placing user-defined zeros in the stop band, and/or constricting the ripple to a percentage of the passband.

Below are examples of Chebyshev Type I low pass, high pass, band pass and band stop filters and the low pass step response.