PRACTICAL MATLAB® FOR ENGINEERS PRACTICAL MATLAB

Analog and Digital Filters 627

FIGURE 6.54

Magnitude and phase plots of the analog denormalized LPF of part (b) of Example 6.7.

1.1

Mag. of LPF with wc
 3

1

0.9

0.8

0.7

0.4

0.3

0

w in rad/sec

 5 5

0.2

magnitude

0.6

0.5

w in rad/sec

 200

 150

 100

 50

0

50

100

150

200

Phase of LPF with wc
 3

degrees

 5 05

FIGURE 6.53

Magnitude and phase plots of the analog normalized LPF of Example 6.7.

1

Mag. analog norm. LPF

05

w in rad/sec

 5

0.6

0.8

0.4

0.2

0

Magnitude

4

3

2

1

0

 1

 2

 3

 4

Phase analog norm. LPF

w in rad /sec

 5 05

angle