Page 66 - Analog and Digital Filter Design
P. 66
Time and Frequency Response 63
IO0
90
80
70
- 60
0
Z
0
F 50
4
3
Z
W 40
I-
I-
a
30
20
10
0
1 10
F R E Q U E N C Y
Figure 2.1 7
1 dB Chebyshev Attenuation Values Filter Order
Normalized Component Values
Chebyshev passive lowpass filters are like Butterworth and have a ladder
network of series inductors with shunt capacitors at their connection nodes.
The first component in this ladder can be either a series inductor or a shunt
capacitor, the following components then alternate: that is, series L. shunt C,
series L, shunt C, and so forth. This is shown in Figures 2.18 and 2.19.
