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High-Pass
4-Pole
Appendix A
Butterworth
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(sec)
Normalized Frequency(f/fc)
Theoretical Transfer Characteristics
1
Frequency Response
0.1
1.0
10.0
2
3 4 5 6 78
2
3 4 5 6 7
-100
-80
-60
-40
-20
0
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.85
0.90
0.95
1.00
1.20
1.40
1.60
1.80
2.00
2.50
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.0
0.00
0.00
0.00
0.00
0.00
0.00
-0.039
-0.017
-0.003
-0.001
0.00
-3.99
-3.01
-0.908
-0.285
-0.100
-17.8
-12.6
-8.43
-6.69
-5.22
-80.0
-55.9
-41.8
-31.8
-24.1
345
330
314
299
282
264
245
224
213
202
191
180
143
118
100
87.6
78.0
61.4
50.7
37.8
30.1
25.1
21.4
18.8
16.7
15.0
.017
.012
.009
.007
.005
.004
.152
.119
.072
.049
.027
.612
.588
.427
.289
.204
.511
.558
.604
.619
.622
.418
.423
.433
.449
.474
1.Normalized Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
f/fc
(Hz)
Amp
(dB)
Phase
(deg)
Delay
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