常见问题
50Ω传输系统功率关系换算表
50Ω传输系统功率电压关系换算表
Power Conversion Table for 50Ω System
|
dBm
|
mW
|
dBmV
|
mVRMS
|
mVP
|
mVPP
|
|
-50
|
0.000
|
-3.0
|
0.7
|
1.0
|
2.0
|
|
-45
|
0.000
|
2.0
|
1.3
|
1.8
|
3.6
|
|
-40
|
0.000
|
7.0
|
2.2
|
3.2
|
6.3
|
|
-35
|
0.000
|
12.0
|
4.0
|
5.6
|
11.2
|
|
-30
|
0.001
|
17.0
|
7.1
|
10.0
|
20.0
|
|
-25
|
0.003
|
22.0
|
12.6
|
17.8
|
35.6
|
|
-20
|
0.010
|
27.0
|
22.4
|
31.6
|
63.2
|
|
-15
|
0.032
|
32.0
|
39.8
|
56.2
|
112.5
|
|
-10
|
0.100
|
37.0
|
70.7
|
100.0
|
200.0
|
|
-5
|
0.316
|
42.0
|
125.7
|
177.8
|
355.7
|
|
0
|
1.000
|
47.0
|
223.6
|
316.2
|
632.5
|
|
1
|
1.259
|
48.0
|
250.9
|
354.8
|
709.6
|
|
2
|
1.585
|
49.0
|
281.5
|
398.1
|
796.2
|
|
3
|
1.995
|
50.0
|
315.9
|
446.7
|
893.4
|
|
4
|
2.512
|
51.0
|
354.4
|
501.2
|
1002.4
|
|
5
|
3.162
|
52.0
|
397.6
|
562.3
|
1124.7
|
|
6
|
3.981
|
53.0
|
446.2
|
631.0
|
1261.9
|
|
7
|
5.012
|
54.0
|
500.6
|
707.9
|
1415.9
|
|
8
|
6.310
|
55.0
|
561.7
|
794.3
|
1588.7
|
|
9
|
7.943
|
56.0
|
630.2
|
891.3
|
1782.5
|
|
10
|
10.000
|
57.0
|
707.1
|
1000.0
|
2000.0
|
|
11
|
12.589
|
58.0
|
793.4
|
1122.0
|
2244.0
|
|
12
|
15.849
|
59.0
|
890.2
|
1258.0
|
2517.9
|
|
13
|
19.953
|
60.0
|
998.8
|
1412.5
|
2825.1
|
|
14
|
25.113
|
61.0
|
1120.7
|
1584.9
|
3169.8
|
|
15
|
31.623
|
62.0
|
1257.4
|
1778.3
|
35856.6
|
|
16
|
39.811
|
63.0
|
1410.9
|
1995.3
|
3990.5
|
|
17
|
50.119
|
64.0
|
1583.0
|
2238.7
|
4477.4
|
|
18
|
63.096
|
65.0
|
1776.2
|
2511.9
|
5023.8
|
|
19
|
79.433
|
66.0
|
1992.9
|
2818.4
|
5636.8
|
|
20
|
100.000
|
67.0
|
2236.1
|
3162.3
|
6324.6
|
|
21
|
125.893
|
68.0
|
2508.9
|
3548.1
|
7096.3
|
|
22
|
158.489
|
69.0
|
2815.0
|
3981.1
|
7962.1
|
|
23
|
199.526
|
70.0
|
3158.5
|
4466.8
|
8933.7
|
|
24
|
251.189
|
71.0
|
3543.9
|
5011.9
|
10023.7
|
|
25
|
316.228
|
72.0
|
3976.4
|
5623.4
|
11246.8
|
|
26
|
398.107
|
73.0
|
4461.5
|
6309.6
|
12619.1
|
|
27
|
501.187
|
74.0
|
5005.9
|
7079.5
|
14158.9
|
|
28
|
630.957
|
75.0
|
5616.7
|
7943.3
|
15886.6
|
|
29
|
794.328
|
76.0
|
6302.1
|
8912.5
|
17825.0
|
|
30
|
1000.000
|
77.0
|
7071.1
|
10000.0
|
20000.0
|