功率单位mw和dbm的换算表

dBmmWdBmmW
01.0 mW26400mW
11.3 mW27500mW
21.6 mW28640mW
32.0 mW29800mW
42.5 mW301.0W
53.2 mW311.3W
64.0 mW321.6W
75.0 mW332.0W
86.0 mW342.5W
98.0 mW353.0W
1010 mW364.0W
1113 mW375.0W
1216 mW386.0W
1320 mW398.0W
1425 mW4010W
1532 mW4113W
1640 mW4216W
1750 mW4320W
1864 mW4425W
1980 mW4532W
20100 mW4640W
21128 mW4750W
22160 mW4864W
23200 mW4980W
24250 mW50100W
25320 mW601000W

射频知识

5W → 10lg5000 = 37dBm
10W → 10lg10000 = 40dBm
20W → 10lg20000 = 43dBm

  从上不难看出,功率每增加一倍,电平值增加3dBm