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  • Return Loss to VSWR Conversion Chart

VSWR Conversion Chart

VSWR Conversion Chart

Due to mismatches in impedance within the connector, some of the signal is reflected. The ratio of the input to the reflected signal is called the Voltage Standing Wave Ratio (VSWR). This ratio can also be measured in dB, and expressed as Return Loss.

 

VSWR RL (dB)   VSWR RL (dB)   VSWR RL (dB)   VSWR RL (dB)   VSWR RL (dB)
1.001 66.025   1.060 30.714   1.138 23.803   1.480 14.264   5.400 3.255
1.002 60.009   1.061 30.575   1.140 23.686   1.490 14.120   5.600 3.136
1.003 56.491   1.062 30.438   1.142 23.571   1.500 13.979   5.800 3.025
1.004 53.997   1.063 30.303   1.144 23.457   1.520 13.708   6.000 2.923
1.005 50.484   1.064 30.171   1.146 23.346   1.540 13.449   6.200 2.827
1.006 50.484   1.065 30.040   1.148 23.235   1.560 13.201   6.400 2.737
1.007 49.149   1.066 29.912   1.150 23.127   1.580 12.964   6.600 2.653
1.008 47.993   1.067 29.785   1.152 23.020   1.600 12.736   6.800 2.573
1.009 46.975   1.068 29.661   1.154 22.914   1.620 12.518   7.000 2.499
1.01 46.064   1.069 29.538   1.156 22.810   1.640 12.308   7.200 2.428
1.011 45.24   1.070 29.417   1.158 22.708   1.660 12.107   7.400 2.362
1.012 44.489   1.071 29.298   1.160 22.607   1.680 11.913   7.600 2.299
1.013 43.798   1.072 29.181   1.162 22.507   1.700 11.725   7.800 2.239
1.014 43.159   1.073 29.066   1.164 22.408   1.720 11.545   8.000 2.183
1.015 42.564   1.074 28.952   1.166 22.311   1.740 11.370   8.200 2.129
1.016 42.007   1.075 28.839   1.168 22.215   1.760 11.202   8.400 2.078
1.017 41.485   1.076 28.728   1.170 22.120   1.780 11.039   8.600 2.029
1.018 40.993   1.077 28.619   1.172 22.027   1.800 10.881   8.800 1.983
1.019 40.528   1.078 28.511   1.174 21.934   1.820 10.279   9.000 1.938
1.02 40.086   1.079 28.405   1.176 21.843   1.840 10.581   9.200 1.896
1.021 39.667   1.080 28.299   1.178 21.753   1.860 10.437   9.400 1.855
1.022 39.867   1.081 28.196   1.180 21.664   1.880 10.298   9.600 1.816
1.023 38.885   1.082 28.093   1.182 21.576   1.900 10.163   9.800 1.779
1.024 38.52   1.083 27.992   1.184 21.489   1.920 10.032   10.000 1.743
1.025 38.7   1.084 27.892   1.186 21.403   1.940 9.904   11.000 1.584
1.026 37.833   1.085 27.794   1.188 21.318   1.960 9.780   12.000 1.451
1.027 37.51   1.086 27.696   1.190 21.234   1.980 9.660   13.000 1.339
1.028 37.198   1.087 27.600   1.192 21.151   2.000 9.542   14.000 1.243
1.029 36.895   1.088 27.505   1.194 21.069   2.100 8.999   15.000 1.160
1.03 36.607   1.089 27.411   1.196 20.988   2.200 8.519   16.000 1.087
1.031 36.327   1.090 27.318   1.198 20.907   2.300 8.091   17.000 1.023
1.032 36.055   1.091 27.266   1.200 20.828   2.400 7.707   18.000 0.966
1.033 35.792   1.092 27.135   1.210 20.443   2.500 7.360   19.000 0.915
1.034 35.537   1.093 27.046   1.220 20.079   2.600 7.044   20.000 0.869
1.035 35.29   1.094 26.957   1.230 19.732   2.700 6.755   22.000 0.790
1.036 35.049   1.095 26.869   1.240 19.401   2.800 6.490   24.000 0.724
1.037 34.816   1.096 26.782   1.250 19.085   2.900 6.246   26.000 0.668
1.038 34.588   1.097 26.697   1.260 18.783   3.000 6.021   28.000 0.621
1.039 34.367   1.098 26.612   1.270 18.493   3.100 5.811   30.000 0.579
1.04 34.151   1.099 26.528   1.280 18.216   3.200 5.617   32.000 0.543
1.041 33.941   1.100 26.444   1.290 17.949   3.300 5.435   34.000 0.511
1.042 33.763   1.102 26.281   1.300 17.692   3.400 5.265   36.000 0.483
1.043 33.536   1.104 26.120   1.310 17.445   3.500 5.105   38.000 0.457
1.044 33.341   1.106 25.963   1.320 17.207   3.600 4.956   40.000 0.434
1.045 33.15   1.108 25.809   1.330 16.977   3.700 4.815   42.000 0.414
1.046 32.963   1.110 25.658   1.340 16.755   3.800 4.682   44.000 0.395
1.047 32.78   1.112 25.510   1.350 16.540   3.900 4.556   46.000 0.038
1.048 32.602   1.114 25.364   1.360 16.322   4.000 4.437   48.000 0.362
1.049 32.427   1.116 25.221   1.370 16.131   4.100 4.324   50.000 0.347
1.05 32.256   1.118 25.081   1.380 15.936   4.200 4.217   55.000 0.316
1.051 32.088   1.120 24.943   1.390 15.747   4.300 4.115   60.000 0.290
1.052 31.923   1.122 24.808   1.400 15.563   4.400 4.018   65.000 0.267
1.053 31.762   1.124 24.675   1.410 15.385   4.500 3.926   70.000 0.248
1.054 31.604   1.126 24.544   1.420 15.211   4.600 3.838   75.000 0.232
1.055 31.449   1.128 24.415   1.430 15.043   4.700 3.753   80.000 0.217
1.056 31.297   1.130 24.289   1.440 14.879   4.800 3.673   85.000 0.204
1.057 31.147   1.132 24.164   1.450 14.719   4.900 3.596   90.000 0.193
1.058 31   1.134 24.042   1.460 14.564   5.000 3.522   95.000 0.183
1.059 30.856   1.136 23.921   1.470 14.412   5.200 3.383   100.000 0.174
 

DOWNLOADABLE PDF 

VSWR to Return Loss Conversion Chart
 

 

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