D68BP4 Datasheet, PDF (6/6 Pages) Frequency Devices, Inc. – Fixed Frequency 4-Pole Pair Filters

Appendix A
Amplitude Response Curves
0
Q3
Q10
-10
-20
-30
-40
-50
-60
1
-70.8
.9
1.1
1.2
Normalized Frequency (f/fo)
Normalized Theoretical Amplitude Data
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
Q=3
fL<fO<fH
f /fO f /fO
0.799 1.251
0.809 1.236
0.818 1.223
0.828 1.208
0.835 1.198
0.839 1.191
0.844 1.185
0.847 1.180
0.858 1.165
0.877 1.140
0.892 1.121
0.905 1.105
0.916 1.092
0.925 1.081
0.933 1.072
0.939 1.065
0.945 1.059
0.949 1.054
0.952 1.050
0.954 1.048
Q = 10
fL<fO<fH
f /fO f /fO
0.935 1.069
0.938 1.066
0.941 1.062
0.945 1.059
0.947 1.056
0.949 1.054
0.95 1.053
0.951 1.051
0.955 1.047
0.961 1.040
0.966 1.035
0.97 1.030
0.974 1.027
0.977 1.024
0.979 1.021
0.982 1.019
0.983 1.017
0.984 1.016
0.985 1.015
0.986 1.014
Band-Reject
4-Pole Pair
360
270
180
90
0
-90
-180
-270
-360_0.1
Phase Response Curves
Q3
Q10
2 3 4 5 6 7 8 _1.0 2 3 4 5 6 7 8_10.0
Normalized Frequency (f/fo)
Normalized Theoretical Phase Data
Phase
Mag
(deg)
1.0
2.5
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
60.0
70.0
80.0
90.0
120.0
150.0
180.0
210.0
Q=3
(-) (+)
f /fo f /fo
0.020 49.66
0.050 19.91
0.100 10.03
0.194 5.160
0.279 3.590
0.352 2.838
0.416 2.405
0.470 2.129
0.515 1.940
0.555 1.803
0.588 1.700
0.617 1.620
0.664 1.505
0.701 1.427
0.729 1.372
0.752 1.330
0.797 1.255
0.824 1.214
0.844 1.185
0.862 1.160
Q = 10
(-) (+)
f /fo f /fo
0.067 14.88
0.164 6.087
0.306 3.268
0.504 1.985
0.621 1.609
0.696 1.437
0.746 1.340
0.783 1.278
0.810 1.235
0.831 1.204
0.848 1.180
0.861 1.161
0.882 1.133
0.897 1.115
0.909 1.101
0.917 1.090
0.934 1.071
0.943 1.060
0.950 1.052
0.957 1.045
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