Appendix E - Vswr-Return Loss Conversion Table - JDS Uniphase CellAdvisor JD720C Series User Manual

Appendix E – VSWR-Return loss conversion table

Return Loss = 20log10(VSWR+1/VSWR-1) (dB)

VSWR = (10R.L./20+1/10R.L./20-1)
VSWR Return
Loss
(dB)
1.00 --
1.01 46.1
1.02 40.1
1.03 36.6
1.04 34.2
1.05 32.3
1.06 30.7
1.07 29.4
1.08 28.3
1.09 27.3
1.10 26.4
1.11 25.7
1.12 24.9
1.13 24.3
1.14 23.7
1.15 23.1
1.16 22.6
1.17 22.1
1.18 21.7
1.19 21.2
1.20 20.8
1.21 20.4
1.22 20.1
1.23 19.7
1.24 19.4
1.25 19.1
1.26 18.8
1.27 18.5
1.28 18.2
1.29 17.9
1.30 17.7
1.32 17.2
1.34 16.8
1.36 16.3
1.38 15.9
1.40 15.8
1.42 15.2
1.44 14.9
1.46 14.6
1.48 14.3
1.50 14.0
1.52 13.7
1.54 13.4
1.56 13.2
1.58 13.0
1.60 12.7
1.62 12.5
Trans. Volt. Power
Loss Refl Trans
(dB) Coeff (%)
0.000 0.00 100.0
0.000 0.00 100.0
0.000 0.01 100.0
0.001 0.01 100.0
0.002 0.02 100.0
0.003 0.02 99.9
0.004 0.03 99.9
0.005 0.03 99.9
0.006 0.04 99.9
0.008 0.04 99.8
0.010 0.05 99.8
0.012 0.05 99.7
0.014 0.06 99.7
0.016 0.06 99.6
0.019 0.07 99.6
0.021 0.07 99.5
0.024 0.07 99.5
0.027 0.08 99.4
0.030 0.08 99.3
0.033 0.09 99.2
0.036 0.09 99.2
0.039 0.10 99.1
0.043 0.10 99.0
0.046 0.10 98.9
0.050 0.11 98.9
0.054 0.11 98.8
0.058 0.12 98.7
0.062 0.12 98.6
0.066 0.12 98.5
0.070 0.13 98.4
0.075 0.13 98.3
0.083 0.14 98.1
0.093 0.15 97.9
0.102 0.15 97.7
0.112 0.16 97.5
0.122 0.17 97.2
0.133 0.17 97.0
0.144 0.18 96.7
0.155 0.19 96.5
0.166 0.19 96.3
0.177 0.20 96.0
0.189 0.21 95.7
0.201 0.21 95.5
0.213 0.22 95.2
0.225 0.22 94.9
0.238 0.23 94.7
0.250 0.24 94.4
CellAdvisor JD720C Series User's Manual
Power VSWR Return
Refl Loss
(%) (dB)
0.0 1.64 12.3
0.0 1.66 12.1
0.0 1.68 11.9
0.0 1.70 11.7
0.0 1.72 11.5
0.1 1.74 11.4
0.1 1.76 11.2
0.1 1.78 11.0
0.1 1.80 10.9
0.2 1.82 10.7
0.2 1.84 10.6
0.3 1.86 10.4
0.3 1.88 10.3
0.4 1.90 10.2
0.4 1.92 10.0
0.5 1.94 9.9
0.5 1.96 9.8
0.6 1.98 9.7
0.7 2.00 9.5
0.8 2.50 7.4
0.8 3.00 6.0
0.9 3.50 5.1
1.0 4.00 4.4
1.1 4.50 3.9
1.1 5.00 3.5
1.2 5.50 3.2
1.3 6.00 2.9
1.4 6.50 2.7
1.5 7.00 2.5
1.6 7.50 2.3
1.7 8.00 2.2
1.9 8.50 2.1
2.1 9.00 1.9
2.3 9.50 1.8
2.5 10.00 1.7
2.8 11.00 1.6
3.0 12.00 1.5
3.3 13.00 1.3
3.5 14.00 1.2
3.7 15.00 1.2
4.0 16.00 1.1
4.3 17.00 1.0
4.5 18.00 1.0
4.8 19.00 0.9
5.1 20.00 0.9
5.3 25.00 0.7
5.6 30.00 0.6
Trans. Volt. Power
Loss Refl Trans
(dB) Coeff (%)
0.263 0.24 94.1
0.276 0.25 93.8
0.289 0.25 93.6
0.302 0.26 93.3
0.315 0.26 93.0
0.329 0.27 92.7
0.342 0.28 92.4
0.356 0.28 92.1
0.370 0.29 91.8
0.384 0.29 91.5
0.398 0.30 91.3
0.412 0.30 91.0
0.426 0.31 90.7
0.440 0.31 90.4
0.454 0.32 90.1
0.468 0.32 89.8
0.483 0.32 89.5
0.497 0.33 89.2
0.512 0.33 88.9
0.881 0.43 81.6
1.249 0.50 75.0
1.603 0.56 69.1
1.938 0.60 64.0
2.255 0.64 59.5
2.553 0.67 55.6
2.834 0.69 52.1
3.100 0.71 49.0
3.351 0.73 46.2
3.590 0.75 43.7
3.817 0.76 41.5
4.033 0.78 39.5
4.240 0.79 37.7
4.437 0.80 36.0
4.626 0.81 34.5
4.807 0.82 33.1
5.149 0.83 30.6
5.466 0.85 28.4
5.762 0.86 26.5
6.040 0.87 24.9
6.301 0.88 23.4
6.547 0.88 22.1
6.780 0.89 21.0
7.002 0.89 19.9
7.212 0.90 19.0
7.413 0.90 18.1
8.299 0.92 14.8
9.035 0.94 12.5
Appendix
Power
Refl
(%)
5.9
6.2
6.4
6.7
7.0
7.3
7.6
7.9
8.2
8.5
8.7
9.0
9.3
9.6
9.9
10.2
10.5
10.8
11.1
18.4
25.0
30.9
36.0
40.5
44.4
47.9
51.0
53.8
56.3
58.5
60.5
62.3
64.0
65.5
66.9
69.4
71.6
73.5
75.1
76.6
77.9
79.0
80.1
81.0
81.9
85.2
87.5
175