Chebyshev and Elliptic Poles

Cuthbert Nyack
The Applet below compares the pole location of Chebyshev and Elliptic filters for the same order and pass band ripple. On the left half of the s plane, the Chebyshev and Elliptic poles are shown in green and cyan. On the right half they are shown in red and orange. The zeros of the elliptic filter are shown on a horizontal line starting from 1.

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COPYRIGHT 2005 Cuthbert Nyack.