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App-38
IM 701210-06E
• IIR (Butterworth) Band-pass: Pass-band Width 2%
-80
-60
-40
-20
0
IIR (Butterworth) Band-pass Frequency Characteristics Pass-band Width 2%
30%
25%
20%
15%
10%
5%
2%
1.20%
0 f
0.1 f
0.2 f
0.3 f
0.4 f
0.5 f
dB
0
20
40
60
80
100
120
140
160
s/T
s
IIR (Butterworth) Band-pass Group Delay Characteristics (1) Pass-band Width 2%
1.20%
2%
0f
0.1 f
0.2 f
0.3 f
0.4 f
0.5 f
0
5
10
15
20
25
30
35
s/T
s
IIR (Butterworth) Band-pass Group Delay Characteristics (2) Pass-band Width 2%
5%
10% 15% 20% 25% 30%
0 f
0.1 f
0.2 f
0.3 f
0.4 f
0.5 f
(f: sampling frequency [Hz])
Appendix 6 DSP Channel Computation (Optional)