## Chebyshev Approximation

Chebyshev Approximation: Chebyshev Approximation – In the earlier section, we have studied that the Butterworth approximation is the best at ω = 0. But as we move towards cut-off frequency, ωc = 1, approximation becomes poorer. It departs from ideal characteristics. Let us consider an approximation which “ripples” about the normalized magnitude, unity, in the pass …