Taro11-FilterT s
Vo s Vi s
T j T j
Ej
G
20 log T j
dB
A
20 log T j
dB
Vo j
T j
Vi j
T s
aM s M a M 1s M s bN 1 s
N
N 1
000 ao 000 bo
M .
a 0 , a1 ,..., a M , b0 , b1 ,..., b N
1
T s
aM s z1 s z 2 000 s z M s p1 s p2 000 s p N
a - / s N
M
T s
a4 s 2
s b4 s 4 b3 s b2 s 2 b1 s b0
2 l1 3
s 2
l2
2
T s
a 5 s s 2
l1
2
s 2
s 6 b5 s 5 b4 s 4 b3 s 3 b2 s b1 s b0
2 l2 2
T s
s b N 1 s
N
aM N 1
000 b0
T j
To
p
T j
p
To
Amax 20 log
10! max / 10 1
T
A
s
20 log To
20 log T j
s
20 log To
20 log 1
To
s
/
p
10 log
s
/
p
s
o
o
o
p
1/
1/ N
/9
2
10
10
0.5088
6.773 10 4 rad / s
P
O
cos 80 o j sin 80 o
O
0.1736 j 0.9848
S 0.3472 S
)
T s
s
s
1.8794
s
s
1.5321
s
s
0.3472
s
T j
T0 cos N cos
T j
……