Huawei Technologies ODU3601C-1900 CDMA Base Station User Manual Reflection

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Document ID	469707
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Document Description	Users Manual 7
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Document Type	User Manual
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Filesize	2.21kB (27574 bits)
Date Submitted	2004-09-17 00:00:00
Date Available	2004-09-13 00:00:00
Creation Date	2004-06-26 11:57:27
Producing Software	Acrobat PDFWriter 4.0 for Windows
Document Lastmod	2004-09-03 14:56:32
Document Title	Reflection
Document Creator	Microsoft Word
Document Author:	c15897

User Manual
iSiteC ODU3601C CDMA Soft Base Station
BTS Maintenance
Appendix B Return Loss, VSWR and Reflection Coefficient
Appendix B Return Loss, VSWR and Reflection
Coefficient
Return loss (dB)
Voltage Standing Wave Ratio
(VSWR)
Reflection coefficient Γ
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
4.41943
3.56977
3.00952
2.61457
2.32285
2.09988
1.92495
1.78489
1.6709
1.57689
1.49852
1.43258
1.37668
1.32898
1.28805
1.25276
1.22222
1.19569
1.17257
1.15238
1.13469
1.11917
1.10553
1.09351
1.08292
1.07357
1.06531
1.058
1.05153
1.0458
1.04072
1.03621
1.03221
1.02866
1.0255
1.0227
1.0202
1.01799
1.01601
1.01426
1.0127
1.01131
1.01007
1.00897
1.00799
1.00712
1.00634
0.63096
0.56234
0.50119
0.44668
0.39811
0.35481
0.31623
0.28184
0.25119
0.22387
0.19953
0.17783
0.15849
0.14125
0.12589
0.1122
0.1
0.08913
0.07943
0.07079
0.0631
0.05623
0.05012
0.04467
0.03981
0.03548
0.03162
0.02818
0.02512
0.02239
0.01995
0.01778
0.01585
0.01413
0.01259
0.01122
0.01
0.00891
0.00794
0.00708
0.00631
0.00562
0.00501
0.00447
0.00398
0.00355
0.00316
B-1
User Manual
iSiteC ODU3601C CDMA Soft Base Station
BTS Maintenance
Appendix B Return Loss, VSWR and Reflection Coefficient
The calculation formulas for reflection coefficient Γ, return Loss (RL), and VSWR are
displayed in the following table:
Reflection coefficient Γ
Γ=
Γ=
Γ=
Ureflected
Uforward
VSWR
Uforward+Ureflected
VSWR=
alg ( RL )
20
VSWR−1
VSWR+1
Return loss (dB)
Uforward Ureflected
VSWR=
VSWR =
1+Γ
1−Γ
RL= 20lg
Ureflected
RL= 20lg
Γ
RL= 20lg
VSWR+1
VSWR−1
alg ( RL )+ 1
20
alg ( RL )− 1
20
Uforward
In the above formulas, Uforward stands for forward voltage and Urelected for reverse
voltage.
B-2

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Create Date                     : 2004:06:26 11:57:27Z
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Title                           : Reflection
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