Keywords: Elliptic Filter Response (4th Order, Detail).svg elliptic filter detail of the transistion band Also shown is the maximum extent of the passband ripples where is the ripple factor and L<sub>n</sub> is the discrimination factor own Inductiveload 2009-01-29 Mathematica Code <pre><nowiki> xp2zeta_ Module g num den g Sqrt4 zeta 2 + 4 zeta 2 zeta 2 - 1 2/3 ; num 2 zeta 2 Sqrtg; den Sqrt8 zeta 2 zeta 2 + 1 + 12 g zeta 2 - g 3 - Sqrtg 3; num/den ; xz2zeta_ zeta 2/xp2zeta; tzeta_ Sqrt1 - 1/zeta 2; r1zeta_ x_ x; r2zeta_ x_ tzeta + 1 x 2 - 1 / tzeta - 1 x 2 + 1 ; r3zeta_ x_ x 1 - xp2zeta x 2 - xz2zeta / 1 - xz2zeta x 2 - xp2zeta ; r4zeta_ x_ Module num den num 1 + tzeta 1 + Sqrttzeta 2 x 4 - 2 1 + tzeta 1 + Sqrttzeta x 2 + 1; den 1 + tzeta 1 - Sqrttzeta 2 x 4 - 2 1 + tzeta 1 - Sqrttzeta x 2 + 1; num/den ; ellgainxi_ w_ w0_ ep_ 1/Sqrt1 + ep 2 r4xi w/w0 2; Plot ellgain1 05 w 1 0 5 w 0 3 </nowiki></pre> Elliptic filters |