Band-Pass
4-Pole Pair
Appendix A
Amplitude Response Curves
0
-10
-20
-30
0
Q1
-1
Q1
Q2
Q5
Amp (dB)
Amp (dB)
-40
-50
-60
-70
-80
-90
Q2
-2
Q5
-3
-4
-100
0.1
2
3
4
5
6
7 8
Q10
Normalized Frequency (f/fo)
1.0
2
3
4
5
6
7 8
Q10
0.6
0.7
0.8
0.9
-5
10.0
1.0
1.1
1.2
1.3
1.4
1.5 1.6
Normalized Frequency (f/fo)
Normalized Theoretical Amplitude Data
Q=1
Amp
(dB)
-0.10
-0.25
-0.50
-1.00
-1.50
-2.00
-2.50
-3.00
-5.00
-10.00
-15.00
-20.00
-25.00
-30.00
-35.00
-40.00
-45.00
-50.00
-55.00
-60.00
-65.00
-70.00
-75.00
-80.00
f
L
< f
O
< f
H
f/f
o
0.735
0.709
0.687
0.663
0.648
0.636
0.627
0.618
0.591
0.539
0.493
0.449
0.407
0.365
0.326
0.290
0.256
0.225
0.197
0.173
0.151
0.131
0.114
0.099
f/f
o
1.360
1.411
1.456
1.508
1.543
1.571
1.596
1.618
1.692
1.855
2.027
2.225
2.459
2.737
3.065
3.452
3.908
4.442
5.067
5.796
6.644
7.630
8.774
10.01
Q=2
f
L
< f
O
< f
H
f/f
o
0.856
0.840
0.826
0.811
0.801
0.793
0.787
0.781
0.762
0.724
0.688
0.650
0.611
0.570
0.527
0.484
0.441
0.399
0.358
0.319
0.283
0.250
0.220
0.193
f/f
o
1.168
1.191
1.211
1.233
1.249
1.261
1.271
1.281
1.313
1.382
1.454
1.538
1.637
1.755
1.896
2.065
2.267
2.507
2.793
3.131
3.530
4.000
4.550
5.193
Q=5
f
L
< f
O
< f
H
f/f
o
0.939
0.932
0.926
0.919
0.914
0.911
0.908
0.905
0.896
0.877
0.858
0.838
0.816
0.791
0.763
0.733
0.699
0.664
0.625
0.585
0.543
0.500
0.457
0.414
f/f
o
1.064
1.073
1.080
1.088
1.094
1.098
1.102
1.105
1.116
1.140
1.165
1.193
1.226
1.265
1.311
1.365
1.430
1.507
1.599
1.710
1.842
2.000
2.189
2.414
Q = 10
f
L
< f
O
< f
H
f/f
o
0.969
0.965
0.962
0.959
0.956
0.954
0.953
0.951
0.946
0.936
0.926
0.915
0.903
0.888
0.872
0.854
0.834
0.811
0.786
0.758
0.727
0.693
0.657
0.618
f/f
o
1.032
1.036
1.039
1.043
1.046
1.048
1.050
1.051
1.057
1.068
1.080
1.093
1.108
1.126
1.146
1.171
1.199
1.233
1.273
1.320
1.376
1.443
1.523
1.618
41
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
FREQUENCYDEVICES [ FREQUENCY DEVICES, INC. ]
