Computer Aided Filter Tuning Workshop. IMS 2003. Computer Aided Tuning (
CAT). CAT. Use of computer simulation algorithm to aid a human operator.
A Fully Automated Filter Tuning Robot for Wireless Base Station Diplexers Dr. Ming Yu Director of R&D Com Dev International Ming.Yu@comdev .ca
[email protected]
This is a revised version from 2003’ 2003’s IEEE MTT conference IMS’ IMS’03
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Tune Effectiveness
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Tuned Tune Failure
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Diplexer |S11| & |S21| Simulation & Measurement
IL & RL (dB)
-20 -40 -60 -80 -100 -120 1.66 1.68
1.7
1.72 1.74 1.76 1.78 1.8 1.82 1.84 1.86 1.88 Frequency (GHz)
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1.9
. S21 Run135
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1.7
1.75
1.8
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1.9
1.95
Run136 Run137
-20
Run138 Run139
-40
Run140 Run141
-60
Run142 Run143
-80
Run144 Run147
-100
Run148 Spec Line Template
-120 Mag (dB)
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S21_Mag
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0 1.6
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1.8
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1.9
1.95
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Run113 Run114 Run115
-40
Run116 Run117 Run118 Run119
-60
Run120 Run121 Run122
-80
Run123 Run124 Run125
-100
Run126 Run127 Run128 Run129
-120
Run130 Run131 Run132
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Run133
Mag (dB)
Run134 Run135
Tuning Time (from fast to slow) 60.000
Time (minutes)
50.000 40.000 30.000 20.000 10.000 0.000 1
4
7
10 13 16 19 22 25 28 31 34 37 40 43 Run #
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Tuning Time Histogram 20 Frequency of occurance
18 16 14 12 10 8 6 4 2 0 20
25
30
35
40
45
50
55
Tuning Tim e Bin (m )
Tuning Time Deviation from Mean 30.000 25.000
Dev (minutes)
20.000 15.000 10.000 5.000 0.000 -5.000 1
4
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-10.000 -15.000 Run #
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