Chebyshev filter frequency response

1. What is Chebyshev response?
2. What is the magnitude response in Chebyshev filter?
3. What are properties of Chebyshev filter?
4. What is the frequency response of Butterworth filter?

What is Chebyshev response?

The Chebyshev response is a mathematical strategy for achieving a faster roll- off by allowing ripple in the frequency response. Analog and digital filters that use this approach are called Chebyshev filters.

What is the magnitude response in Chebyshev filter?

In the Chebyshev type-2 filter, you specify the frequency at which the stopband begins, and the maximum ripple amplitude. In Figure 14.26, we see the magnitude responses of N = 2–8, Chebyshev type-2 LPFs, with a stopband beginning at 1 rad/s and a stopband minimum attenuation of −50 dB.

What are properties of Chebyshev filter?

The primary attribute of Chebyshev filters is their speed, typically more than an order of magnitude faster than the windowed-sinc. This is because they are carried out by recursion rather than convolution. The design of these filters is based on a mathematical technique called the z-transform, discussed in Chapter 33.

What is the frequency response of Butterworth filter?

The frequency response of the Butterworth filter is maximally flat (i.e. has no ripples) in the passband and rolls off towards zero in the stopband. When viewed on a logarithmic Bode plot, the response slopes off linearly towards negative infinity.