High-Pass

8-Pole

Appendix A

Butterworth

9

0.1

1.0

10.0

2

3 4 5 6 78

2

3 4 5 6 7

Normalized Frequency(f/fc)

-100

-80

-60

-40

-20

0

Frequency Response

(sec)

Theoretical Transfer Characteristics

1

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

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

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

-5.15

-3.01

-0.229

-0.020

-0.002

59.0

49.0

42.1

36.8

32.7

29.4

-35.5

-24.8

-15.6

-11.6

-8.06

-160

-112

-83.7

-63.7

-48.2

386

360

275

226

194

170

152

120

99.2

74.0

535

499

459

437

413

691

661

631

600

568

0.033

0.023

0.017

0.013

0.010

0.008

0.287

0.226

0.139

0.094

0.052

1.48

1.46

0.873

0.540

0.380

.956

1.04

1.19

1.29

1.40

0.819

0.828

0.843

0.867

0.903

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