Appendix A
June 2000

 


Band-Pass
4-Pole Pair



Amplitude Response Curves

 

Normalized Theoretical Amplitude Data


Amp
(dB)
Q = 1
Q = 2
Q = 5
Q = 10
fL < fO < fH
fL < fO < fH
fL < fO < fH
fL < fO < fH
f/fo
f/fo
f/fo
f/fo
f/fo
f/fo
f/fo
f/fo
-0.10
0.735
1.360
0.856
1.168
0.939
1.064
0.969
1.032
-0.25
0.709
1.411
0.840
1.191
0.932
1.073
0.965
1.036
-0.50
0.687
1.456
0.826
1.211
0.926
1.080
0.962
1.039
-1.00
0.663
1.508
0.811
1.233
0.919
1.088
0.959
1.043
-1.50
0.648
1.543
0.801
1.249
0.914
1.094
0.956
1.046
-2.00
0.636
1.571
0.793
1.261
0.911
1.098
0.954
1.048
-2.50
0.627
1.596
0.787
1.271
0.908
1.102
0.953
1.050
-3.00
0.618
1.618
0.781
1.281
0.905
1.105
0.951
1.051
-5.00
0.591
1.692
0.762
1.313
0.896
1.116
0.946
1.057
-10.00
0.539
1.855
0.724
1.382
0.877
1.140
0.936
1.068
-15.00
0.493
2.027
0.688
1.454
0.858
1.165
0.926
1.080
-20.00
0.449
2.225
0.650
1.538
0.838
1.193
0.915
1.093
-25.00
0.407
2.459
0.611
1.637
0.816
1.226
0.903
1.108
-30.00
0.365
2.737
0.570
1.755
0.791
1.265
0.888
1.126
-35.00
0.326
3.065
0.527
1.896
0.763
1.311
0.872
1.146
-40.00
0.290
3.452
0.484
2.065
0.733
1.365
0.854
1.171
-45.00
0.256
3.908
0.441
2.267
0.699
1.430
0.834
1.199
-50.00
0.225
4.442
0.399
2.507
0.664
1.507
0.811
1.233
-55.00
0.197
5.067
0.358
2.793
0.625
1.599
0.786
1.273
-60.00
0.173
5.796
0.319
3.131
0.585
1.710
0.758
1.320
-65.00
0.151
6.644
0.283
3.530
0.543
1.842
0.727
1.376
-70.00
0.131
7.630
0.250
4.000
0.500
2.000
0.693
1.443
-75.00
0.114
8.774
0.220
4.550
0.457
2.189
0.657
1.523
-80.00
0.099
10.01
0.193
5.193
0.414
2.414
0.618
1.618


Phase Response Curves

 

Normalized Theoretical Phase Data

Phase

Mag

(deg)

Q = 1
Q = 2
Q = 5
Q = 10
(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
f/fo
f/fo
f/fo
f/fo
f/fo
f/fo
f/fo
f/fo
1.0
0.997
1.003
0.998
1.002
0.999
1.001
1.000
1.000
2.5
0.992
1.008
0.996
1.004
0.998
1.002
0.999
1.001
5.0
0.983
1.017
0.992
1.008
0.997
1.003
0.998
1.002
10.0
0.967
1.034
0.983
1.017
0.993
1.007
0.997
1.003
15.0
0.951
1.051
0.975
1.025
0.990
1.010
0.995
1.005
20.0
0.936
1.069
0.967
1.034
0.987
1.013
0.993
1.007
25.0
0.920
1.087
0.959
1.042
0.984
1.017
0.992
1.008
30.0
0.905
1.105
0.951
1.051
0.980
1.020
0.990
1.010
35.0
0.891
1.123
0.944
1.060
0.977
1.023
0.988
1.012
40.0
0.876
1.141
0.936
1.068
0.974
1.027
0.987
1.013
45.0
0.863
1.159
0.929
1.077
0.971
1.030
0.985
1.015
50.0
0.849
1.178
0.921
1.086
0.968
1.033
0.984
1.017
60.0
0.823
1.215
0.907
1.103
0.962
1.040
0.981
1.020
70.0
0.799
1.252
0.893
1.120
0.956
1.046
0.978
1.023
80.0
0.776
1.288
0.880
1.136
0.950
1.052
0.975
1.026
90.0
0.755
1.324
0.868
1.152
0.945
1.058
0.972
1.029
120.0
0.701
1.426
0.835
1.198
0.930
1.075
0.964
1.037
150.0
0.657
1.521
0.807
1.239
0.917
1.090
0.958
1.044
180.0
0.618
1.618
0.781
1.281
0.905
1.105
0.951
1.051
210.0
0.577
1.734
0.752
1.330
0.891
1.122
0.944
1.060
240.0
0.525
1.904
0.713
1.403
0.872
1.147
0.933
1.071
270.0
0.452
2.210
0.653
1.532
0.840
1.191
0.916
1.092
300.0
0.345
2.899
0.548
1.825
0.777
1.288
0.880
1.136
330.0
0.192
5.211
0.350
2.859
0.617
1.621
0.780
1.282

 

 



Frequency Devices, Inc.
Your engineering partner for signal conditioning
  1784 Chessie Lane
Ottawa, IL 61350

Fax: (815) 434-8176
e-mail: sales@freqdev.com

 

Phone: (815) 434-7800
or (800) 252-7074 (U.S. only)

Copyright © 2001, 2002, 2003, 2004, 2007, Frequency Devices
All Rights Reserved