Page 69 - Analog and Digital Filter Design

66 Analog and Digital Filter Design

I Order I C1 L2 c3 L4 C5 16 c7 18 c9 I
3 1.63306 1.43616 1.63306
5 1.53996 1.43493 2.44027 1.43493 1.53996
7 1.51189 1.41692 2.45311 1.53492 2.45311 1.41692 1.51189
9 1.50000 1.40755 2.44460 1.54062 2.50767 1.54062 2.44460 1.40755 1.50000
LI' C2' L3' C4' L5' C6' L7' c8' L9'

Table 2.12
Normalized Chebyshev Element Values, 0.25 dB Ripple

I Order I C1 L2 c3 L4 C5 16 c7 18 c9
3 1.86369 1.28036 1.86369
5 1.80691 1.30248 2.69145 1.30248 1.80691
7 1.78962 1.29608 2.71773 1.38476 2.71773 1.29608 1.78962
9 1.78229 1.29208 2.71630 1.39214 2.77344 1.39214 2.71630 1.29208 1.78229
L1' C2' L3' C4' L5' C6' L7' C8' 19'
~~
Table 2.13
Normalized Chebyshev Element Values, 0.5 dB Ripple

Order Cl L2 c3 L4 C5 16 c7 18 c9
3 2.21565 1.08839 2.21565
5 2.20715 1.12798 3.10248 1.12798 2.20715
7 2.20391 1.13061 3.14695 1.19368 3.14695 1.13061 2.20391
9 2.20246 1.13079 3.15397 1.20201 3.20772 1.20201 3.15397 1.13079 2.20246
I 1 C2' L3' C4' L5' C6' L7' C8' LY
Ll'

Table 2.14
Normalized Chebyshev Element Values, 1 dB Ripple

Only odd-order values are given in Tables 2.10 to 2.14. This is because even-
order Chebyshev filters cannot be used if the source and load are equal. In fact,
the even-order passive Chebyshev filter must have a normalized load resistance
of greater than unity if the first component is a series inductor (the last com-
ponent is therefore a shunt capacitor across the load). Conversely, if the first
component is a shunt capacitor, the last component will be a series inductor
feeding the load, and the normalized resistance of the load must be less than