Chebyshev Filters

Thread Starter

u02nb5

Joined Jan 19, 2007
2
Why would you use one?? where are they mainly found???

(Like Butterworth filters are normally used in music systems because of their flatness in the passband)
(I understand they produce a steeper roll off near the cut-off region)

thanks for any help

nick
 

SgtWookie

Joined Jul 17, 2007
22,230
Chebychev filters have relatively high ripple in the passband, but a very steep dropoff into the stopband. It's much closer to a "brick wall" response than many other types.

They're very useful for suppression of RF energy outside of a given frequency range.
 

KL7AJ

Joined Nov 4, 2008
2,229
Chebychev filters are most commonly used in radio R.F. and I.F. stages, where steep cutoff is more important than absolutely flat response. With enough poles, a Chebychev can be made as flat in the passband as you want, anyway.

eric
 
Top