IUT CACHAN S.POUJOULY
Fiche pratique
Approximation de Chebyshev Ondulation 3dB
Ordre K Polynôme normalisé
2 0,7079 (1,4125.s²+0,9109.s+1)
3 1 (1,1916.s²+0,3559.s+1).(3,3487.s+1)
4 0,7079 (1,1073.s²+0,1886.s+1).(5,1026.s²+2,0984.s+1)
5 1 (1,0683.s²+0,1172.s+1).(2,6525.s²+0,7619.s+1).(5,6328.s+1)
6 0,7079 (1,0473.s²+0,0801.s+1).(1,9164.s²+0,4003.s+1).(11,2607.s²+3,2132.s+1)
7 1 (1,0347.s²+0,0582.s+1).(1,5942.s²+0,2515.s+1).(4,8959.s²+1,1159.s+1).(7,9061.s+1)
8 0,7079 (1,0265.s²+0,0443.s+1).(1,4213.s²+0,1747.s+1).(3,1163.s²+0,5732.s+1).(19,8831.s²+4,3139.s+1)
9 1 (1,0209.s²+0,0348.s+1).(1,3164.s²+0,1294.s+1).(2,3650.s²+0,3561.s+1).(7,8967.s²+1,4585.s+1).(10,1756.s+1)
1 2 3 4 5 6 7 8 9 10 11 12
0 10 20 30 40 50 60 70 80 90 100 110 120
n=2 n=3 n=4 n=6 n=5
n=8 n=7 n=9
Atténuation (dB) Approximation de Chebyshev Ondulation 3dB
x
1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3
0 10 20 30 40 50 60 70 80 90 100 110 120
Atténuation (dB) Approximation de Chebyshev Ondulation 3dB n=9
n=2 n=3 n=4 n=5 n=6 n=7 n=8
x