Band-Reject

4-Pole Pair

Appendix A

1784 Chessie Lane, Ottawa, IL 61350 • Tel: 800/252-7074, 815/434-7800 • FAX: 815/434-8176

e-mail: sales@freqdev.com

Web Address: http://www.freqdev.com

Q = 3

Q = 10

Amp

(dB)

-0.10 0.799 1.251

0.935 1.069

-0.25 0.809 1.236

0.938 1.066

-0.50 0.818 1.223

0.941 1.062

-1.00 0.828 1.208

0.945 1.059

-1.50 0.835 1.198

0.947 1.056

-2.00 0.839 1.191

0.949 1.054

-2.50 0.844 1.185

0.95

1.053

-3.00 0.847 1.180

0.951 1.051

-5.00 0.858 1.165

0.955 1.047

-10.00 0.877 1.140

0.961 1.040

-15.00 0.892 1.121

0.966 1.035

-20.00 0.905 1.105

0.97

1.030

-25.00 0.916 1.092

0.974 1.027

-30.00 0.925 1.081

0.977 1.024

-35.00 0.933 1.072

0.979 1.021

-40.00 0.939 1.065

0.982 1.019

-45.00 0.945 1.059

0.983 1.017

-50.00 0.949 1.054

0.984 1.016

-55.00 0.952 1.050

0.985 1.015

-60.00 0.954 1.048

0.986 1.014

1

-70

-60

-50

-40

-30

-20

-10

0

1.1

1.2

.9

.8

Q3

Q10

0.1

1.0

10.0

2

3

4 5 6 7 8

2

3 4 5 6 7 8

Normalized Theoretical Phase Data

Q = 3

Q = 10

(-)

(+)

(-)

(+)

Phase

Mag

(deg)

f/fo

f/fo

f/fo

f/fo

1.0

0.020 49.66

0.067 14.88

2.5

0.050 19.91

0.164 6.087

5.0

0.100 10.03

0.306 3.268

10.0 0.194 5.160

0.504 1.985

15.0 0.279 3.590

0.621 1.609

20.0 0.352 2.838

0.696 1.437

25.0 0.416 2.405

0.746 1.340

30.0 0.470 2.129

0.783 1.278

35.0 0.515 1.940

0.810 1.235

40.0 0.555 1.803

0.831 1.204

45.0 0.588 1.700

0.848 1.180

50.0 0.617 1.620

0.861 1.161

60.0 0.664 1.505

0.882 1.133

70.0 0.701 1.427

0.897 1.115

80.0 0.729 1.372

0.909 1.101

90.0 0.752 1.330

0.917 1.090

120.0 0.797 1.255

0.934 1.071

150.0 0.824 1.214

0.943 1.060

180.0 0.844 1.185

0.950 1.052

210.0 0.862 1.160

0.957 1.045

Normalized Frequency (f/fo)

Normalized Frequency (f/fo)

-360

-270

-180

-90

0

90

180

270

360

Phase Response Curves

Amplitude Response Curves

Normalized Theoretical Amplitude Data

Q3

Q10

fL<fO<fH

fL<fO<fH

f /fO

f /fO

f /fO

f /fO

43