PRACTICAL MATLAB® FOR ENGINEERS PRACTICAL MATLAB

Analog and Digital Filters 607

FIGURE 6.32

Plots of H(f) of Example 6.2.

1

0.8

0.6

magnitude

Magnitude of H(f) versus frequency

frequency in Hrz

0.4

0.2

 505



104

104

0

100

50

phase in degrees

Phase of H(f) versus frequency

frequency in Hrz

0

 50

 100

 505

FIGURE 6.33

Plots of H(f)dB and ∠H(f) using a semilog scale of Example 6.2.

 50

 40

 30

 20

 10

0

magnitude in dbs

103

magnitude versus freqs.

104

0

20

40

60

80

phase in degrees

104

phase ang. versus freqs.

frequency in Hrz