 驻波比与回波损耗的换算关系
驻波比（VSWR）: Voltage Standing Wave Ratio
回波损耗（RL） :Return Loss
换算公式：RL=20*log10[(VSWR+1)/(VSWR-1)]
换算表格：
|
驻波比
|
回波损耗(dB)
|
驻波比
|
回波损耗(dB)
|
|
1.01
|
46.064
|
1.26
|
18.783
|
|
1.02
|
40.086
|
1.27
|
18.493
|
|
1.03
|
36.607
|
1.28
|
18.216
|
|
1.04
|
34.151
|
1.29
|
17.949
|
|
1.05
|
32.256
|
1.30
|
17.692
|
|
1.06
|
30.714
|
1.31
|
17.445
|
|
1.07
|
29.417
|
1.32
|
17.207
|
|
1.08
|
28.299
|
1.33
|
16.977
|
|
1.09
|
27.318
|
1.34
|
16.755
|
|
1.10
|
26.444
|
1.35
|
16.540
|
|
1.11
|
25.658
|
1.36
|
16.332
|
|
1.12
|
24.943
|
1.37
|
16.131
|
|
1.13
|
24.289
|
1.38
|
15.936
|
|
1.14
|
23.686
|
1.39
|
15.747
|
|
1.15
|
23.127
|
1.40
|
15.563
|
|
1.16
|
22.607
|
1.41
|
15.385
|
|
1.17
|
22.120
|
1.42
|
15.211
|
|
1.18
|
21.664
|
1.43
|
15.043
|
|
1.19
|
21.234
|
1.44
|
14.879
|
|
1.20
|
20.828
|
1.45
|
14.719
|
|
1.21
|
20.443
|
1.46
|
14.564
|
|
1.22
|
20.079
|
1.47
|
14.412
|
|
1.23
|
19.732
|
1.48
|
14.264
|
|
1.24
|
19.401
|
1.49
|
14.120
|
|
1.25
|
19.085
|
1.50
|
13.979
|
 耦合器的耦合损耗（理论损耗）计算公式
耦合度（dB） :C（负数）
耦合损耗（dB）：=10*LOG10(1-10^(C/10))
计算表格：
|
耦合度（dB）
|
耦合损耗(dB)
|
耦合度（dB）
|
耦合损耗(dB)
|
|
-3
|
-3.020624399
|
-14
|
-0.176431457
|
|
-4
|
-2.204808305
|
-15
|
-0.139554339
|
|
-5
|
-1.650885386
|
-16
|
-0.110483333
|
|
-6
|
-1.256275775
|
-17
|
-0.087529294
|
|
-7
|
-0.966528953
|
-18
|
-0.069382319
|
|
-8
|
-0.749403674
|
-19
|
-0.055021507
|
|
-9
|
-0.584351739
|
-20
|
-0.043648054
|
|
-10
|
-0.457574906
|
-25
|
-0.013755358
|
|
-11
|
-0.359445142
|
-30
|
-0.004345118
|
|
-12
|
-0.283047838
|
-40
|
-0.000434316
|
|
-13
|
-0.223306727
|
-50
|
-4.34297E-05
|
功分器分配损耗计算公式
功分器分路数 :N
分配损耗（dB）：=10*LOG10(1/N)
计算表格：
|
功分器路数
|
分配损耗(dB)
|
功分器路数
|
分配损耗(dB)
|
|
2
|
-3.010299957
|
13
|
-11.13943352
|
|
3
|
-4.771212547
|
14
|
-11.46128036
|
|
4
|
-6.020599913
|
15
|
-11.76091259
|
|
5
|
-6.989700043
|
16
|
-12.04119983
|
|
6
|
-7.781512504
|
17
|
-12.30448921
|
|
7
|
-8.4509804
|
18
|
-12.55272505
|
|
8
|
-9.03089987
|
19
|
-12.78753601
|
|
9
|
-9.542425094
|
20
|
-13.01029996
|
|
10
|
-10
|
24
|
-13.80211242
|
|
11
|
-10.41392685
|
30
|
-14.77121255
|
|
12
|
-10.79181246
|
32
|
-15.05149978
|
|
