1
85kviews
Differentiate between Butterworth and chebyshev filter
1 Answer
written 5.6 years ago by |
Butterworth Filter | Chebyshev Filter |
---|---|
For a particular desired specification of a digital filter the order of butterworth filter will be higher than chebyshev filter | For a particular desired specification of a digital filter the order of chebyshev filter will be lower as compared to butterworth filter |
For a particular specification butterworth filter requires more hardware | For a particular specification chebyshev filter requires less hardware |
This filter has cutoff frequency not equal to passband frequency Ωc=Ωp/(1A2p−1)12N | This filter has cutoff frequency equal to passband frequency Ωc=Ωp |
The transition band of butterworth filter is wider as compared to chebyshev filter | The transition band of chebyshev filter is narrow as compared to butterworth filter |
All poles of filter will always lie on circle having radius r=Ωc | All the poles of a filter will lie on ellipse having major axis 'R', 'ζ', minor axis 'r' |
Butterworth filter has no ripples either in passband or stopband | Chebyshev filter will have ripples either in stop band or passband |
Butterworth filter does not have any type | It has two type i.e Type 1= Ripple in passband and Type 2=Ripple in stopband |