High-Pass
8-Pole
Appendix A
Butterworth
Theoretical Transfer Characteristics
1
Frequency Response
0
-20
-40
-60
-80
-100
f/fc
Amp
(dB)
Phase
(deg)
Delay
(sec)
(Hz)
0.10
0.20
0.30
0.40
0.50
-160
-112
-83.7
-63.7
-48.2
691
661
631
600
568
0.819
0.828
0.843
0.867
0.903
0.60
0.70
0.80
0.85
0.90
-35.5
-24.8
-15.6
-11.6
-8.06
535
499
459
437
413
.956
1.04
1.19
1.29
1.40
2
2
3 4 5 6 7
0.1
3 4 5 6 78 1.0
10.0
Normalized Frequency(f/fc)
0.95
1.00
1.20
1.40
1.60
-5.15
386
360
275
226
194
1.48
-3.01
1.46
-0.229
-0.020
-0.002
0.873
0.540
0.380
1.80
2.00
2.50
3.00
4.00
0.00
0.00
0.00
0.00
0.00
170
152
120
99.2
74.0
0.287
0.226
0.139
0.094
0.052
5.00
6.00
7.00
8.00
9.00
10.0
0.00
0.00
0.00
0.00
0.00
0.00
59.0
49.0
42.1
36.8
32.7
29.4
0.033
0.023
0.017
0.013
0.010
0.008
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).
Normalized Delay
Actual Delay =
Actual Corner Frequency (fc) in Hz
29
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