Appendix A
June 2000

 


Band-Pass
2-Pole Pair



Amplitude Response Curves

 

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
0.824
1.214
0.907
1.102
0.962
1.040
0.981
1.020
-0.25
0.783
1.277
0.884
1.131
0.952
1.051
0.976
1.025
-0.50
0.747
1.338
0.863
1.159
0.943
1.061
0.971
1.030
-1.00
0.705
1.418
0.837
1.194
0.931
1.074
0.965
1.036
-1.50
0.677
1.478
0.820
1.220
0.923
1.083
0.961
1.041
-2.00
0.654
1.529
0.805
1.242
0.916
1.091
0.957
1.045
-2.50
0.635
1.574
0.792
1.262
0.910
1.098
0.954
1.048
-3.00
0.618
1.617
0.781
1.280
0.905
1.105
0.951
1.051
-5.00
0.563
1.776
0.742
1.348
0.886
1.129
0.941
1.062
-10.00
0.457
2.189
0.657
1.523
0.842
1.188
0.917
1.090
-15.00
0.368
2.720
0.572
1.748
0.792
1.263
0.889
1.125
-20.00
0.290
3.445
0.485
2.062
0.733
1.364
0.855
1.170
-25.00
0.225
4.439
0.399
2.506
0.664
1.507
0.811
1.233
-30.00
0.173
5.795
0.319
3.130
0.585
1.709
0.758
1.320
-35.00
0.131
7.630
0.250
3.999
0.500
2.000
0.693
1.443
-40.00
0.099
10.09
0.193
5.192
0.414
2.414
0.618
1.618
-45.00
0.075
13.41
0.147
6.814
0.333
3.001
0.535
1.869
-50.00
0.056
17.83
0.111
9.002
0.262
3.819
0.449
2.228
-55.00
0.042
23.75
0.084
11.94
0.202
4.945
0.365
2.737
-60.00
0.032
31.65
0.063
15.87
0.154
6.479
0.290
3.453
-65.00
0.024
42.19
0.047
21.13
0.117
8.552
0.225
4.443
-70.00
0.018
56.25
0.036
28.15
0.088
11.33
0.172
5.798
-75.00
0.013
75.00
0.027
37.52
0.066
15.06
0.131
7.632
-80.00
0.010
100.0
0.020
50.01
0.050
20.05
0.099
10.10


Phase Response Curves

 

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
0.994
1.006
0.997
1.003
0.999
1.001
0.999
1.001
2.5
0.985
1.016
0.992
1.008
0.997
1.003
0.998
1.002
5.0
0.970
1.031
0.985
1.016
0.994
1.006
0.997
1.003
10.0
0.940
1.063
0.970
1.031
0.988
1.012
0.994
1.006
15.0
0.913
1.096
0.955
1.047
0.982
1.018
0.991
1.009
20.0
0.886
1.128
0.941
1.062
0.976
1.025
0.988
1.012
25.0
0.861
1.161
0.928
1.078
0.970
1.030
0.985
1.015
30.0
0.838
1.194
0.915
1.093
0.965
1.036
0.982
1.018
35.0
0.815
1.227
0.902
1.108
0.960
1.042
0.980
1.021
40.0
0.794
1.259
0.891
1.123
0.955
1.048
0.977
1.024
45.0
0.774
1.292
0.879
1.138
0.950
1.053
0.974
1.026
50.0
0.755
1.324
0.868
1.152
0.945
1.059
0.972
1.029
60.0
0.719
1.391
0.846
1.182
0.935
1.069
0.967
1.034
70.0
0.685
1.460
0.825
1.212
0.925
1.081
0.962
1.040
80.0
0.652
1.535
0.803
1.245
0.916
1.092
0.957
1.045
90.0
0.618
1.618
0.781
1.281
0.905
1.105
0.951
1.051
105.0
0.564
1.772
0.743
1.346
0.887
1.128
0.941
1.062
120.0
0.502
1.991
0.695
1.439
0.862
1.160
0.928
1.077
135.0
0.424
2.356
0.628
1.594
0.825
1.212
0.908
1.101
150.0
0.320
3.126
0.520
1.923
0.758
1.319
0.869
1.150
165.0
0.177
5.639
0.327
3.058
0.593
1.686
0.764
1.310
180.0
0
inf
0
inf
0
inf
0
inf

 

 



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