放大倍数与增益db换算表

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1、放大倍数增益（电压）增益（功率）*倍*dB10.00.026.03.039.54.8412.06.0514.07.0615.67.8716.98.5818.19.0919.19.51020.010.01120.810.41221.610.81322.311.11422.911.51523.511.81624.112.01724.612.31825.112.61925.612.82026.013.02126.413.22226.813.42327.213.62427.613.82528.014.02628.314.12728.614.32828.914.52

2、929.214.63029.514.83129.814.93230.115.13330.415.23430.615.33530.915.43631.115.63731.415.73831.615.83931.815.94032.016.0放大倍数增益（电压、电流）增益（功率）*倍*dB4132.316.14232.516.24332.716.34432.916.44533.116.54633.316.64733.416.74833.616.84933.816.95034.017.05134.217.15234.317.25334.517.25434.617

3、.35534.817.45635.017.55735.117.65835.317.65935.417.76035.617.86135.717.96235.817.96336.018.06436.118.16536.318.16636.418.26736.518.36836.718.36936.818.47036.918.57137.018.57237.118.67337.318.67437.418.77537.518.87637.618.87737.718.97837.818.97938.019.08038.119.08138.219.1放大倍数增益（电压

4、、电流）增益（功率）*倍*dB8238.319.18338.419.28438.519.28538.619.38638.719.38738.819.48838.919.48939.019.59039.119.59139.219.69239.319.69339.419.79439.519.79539.619.89639.619.89739.719.99839.819.99939.920.010040.020.020046.023.030049.524.840052.026.050054.027.060055.627.870056.928.580058.129

5、.090059.129.5100060.030.0200066.033.0300069.534.8400072.036.0500074.037.0600075.637.8700076.938.5800078.139.0900079.139.51000080.040.0100000100.050.0    dB基本上是一个比例数值，也就是一种倍数的表示单位。也就是测试数据与参考标准的相对差异表示。计算公式：dB=10log（P1/P2）=20log（V1/V2）（P代表功率，V代表电压）