公式:
其中:0dBμV=1μV
dBμV |
μVolt |
dBμV |
μVolt |
dBμV |
mVolt |
dBμV |
mVolt |
dBμV |
Volt |
0 |
1.00 |
40 |
100 |
60 |
1.00 |
100 |
100 |
120 |
1.00 |
1 |
1.12 |
41 |
112 |
61 |
1.12 |
101 |
112 |
121 |
1.12 |
2 |
1.26 |
42 |
126 |
62 |
1.26 |
102 |
126 |
122 |
1.26 |
3 |
1.41 |
43 |
141 |
63 |
1.41 |
103 |
141 |
123 |
1.41 |
4 |
1.58 |
44 |
158 |
64 |
1.58 |
104 |
158 |
124 |
1.58 |
5 |
1.78 |
45 |
178 |
65 |
1.78 |
105 |
178 |
125 |
1.78 |
6 |
2.00 |
46 |
200 |
66 |
2.00 |
106 |
200 |
126 |
2.00 |
7 |
2.24 |
47 |
224 |
67 |
2.24 |
107 |
224 |
127 |
2.24 |
8 |
2.51 |
48 |
251 |
68 |
2.51 |
108 |
251 |
128 |
2.51 |
9 |
2.82 |
49 |
282 |
69 |
2.82 |
109 |
282 |
129 |
2.82 |
10 |
3.16 |
50 |
316 |
70 |
3.16 |
110 |
316 |
|
|
11 |
3.55 |
51 |
355 |
71 |
3.55 |
111 |
355 |
|
|
12 |
3.98 |
52 |
398 |
72 |
3.98 |
112 |
398 |
|
|
13 |
4.47 |
53 |
447 |
73 |
4.47 |
113 |
447 |
|
|
14 |
5.01 |
54 |
501 |
74 |
5.01 |
114 |
501 |
|
|
15 |
5.62 |
55 |
562 |
75 |
5.62 |
115 |
562 |
|
|
16 |
6.31 |
56 |
631 |
76 |
6.31 |
116 |
631 |
|
|
17 |
7.08 |
57 |
708 |
77 |
7.08 |
117 |
708 |
|
|
18 |
7.94 |
58 |
794 |
78 |
7.94 |
118 |
794 |
|
|
19 |
8.91 |
59 |
891 |
79 |
8.91 |
119 |
891 |
|
|
20 |
10.0 |
|
|
80 |
10.0 |
|
|
|
|
21 |
11.2 |
|
|
81 |
11.2 |
|
|
|
|
22 |
12.6 |
|
|
82 |
12.6 |
|
|
|
|
23 |
14.1 |
|
|
83 |
14.1 |
|
|
|
|
24 |
15.8 |
|
|
84 |
15.8 |
|
|
|
|
25 |
17.8 |
|
|
85 |
17.8 |
|
|
|
|
26 |
20.0 |
|
|
86 |
20.0 |
|
|
|
|
27 |
22.4 |
|
|
87 |
22.4 |
|
|
|
|
28 |
25.1 |
|
|
88 |
25.1 |
|
|
|
|
29 |
28.2 |
|
|
89 |
28.2 |
|
|
|
|
30 |
31.6 |
|
|
90 |
31.6 |
|
|
|
|
31 |
35.5 |
|
|
91 |
35.5 |
|
|
|
|
32 |
39.8 |
|
|
92 |
39.8 |
|
|
|
|
33 |
44.7 |
|
|
93 |
44.7 |
|
|
|
|
34 |
50.1 |
|
|
94 |
50.1 |
|
|
|
|
35 |
56.2 |
|
|
95 |
56.2 |
|
|
|
|
36 |
63.1 |
|
|
96 |
63.1 |
|
|
|
|
37 |
70.8 |
|
|
97 |
70.8 |
|
|
|
|
38 |
79.4 |
|
|
98 |
79.4 |
|
|
|
|
39 |
89.1 |
|
|
99 |
89.1 |
|
|
|
|
40 |
100 |
|
|
|
|
|
|
|
|
dBm-V換算表
公式:
條件:阻抗(R)=50Ω 其中:0dBm=0.2236V=2236μV
dBm |
Volt |
dBm |
Volt |
dBm |
Volt |
dBm |
Volt |
dBm |
Volt |
+20.0 |
2.236 |
+16.0 |
1.411 |
+12.0 |
0.890 |
+8.0 |
0.562 |
+4.0 |
0.354 |
+19.9 |
2.210 |
+15.9 |
1.395 |
+11.9 |
0.880 |
+7.9 |
0.555 |
+3.9 |
0.350 |
+19.8 |
2.185 |
+15.8 |
1.379 |
+11.8 |
0.870 |
+7.8 |
0.549 |
+3.8 |
0.346 |
+19.7 |
2.160 |
+15.7 |
1.363 |
+11.7 |
0.860 |
+7.7 |
0.543 |
+3.7 |
0.342 |
+19.6 |
2.135 |
+15.6 |
1.347 |
+11.6 |
0.850 |
+7.6 |
0.536 |
+3.6 |
0.338 |
+19.5 |
2.111 |
+15.5 |
1.332 |
+11.5 |
0.840 |
+7.5 |
0.530 |
+3.5 |
0.335 |
+19.4 |
2.087 |
+15.4 |
1.317 |
+11.4 |
0.831 |
+7.4 |
0.524 |
+3.4 |
0.331 |
+19.3 |
2.063 |
+15.3 |
1.302 |
+11.3 |
0.821 |
+7.3 |
0.518 |
+3.3 |
0.327 |
+19.2 |
2.039 |
+15.2 |
1.287 |
+11.2 |
0.812 |
+7.2 |
0.512 |
+3.2 |
0.323 |
+19.1 |
2.016 |
+15.1 |
1.272 |
+11.1 |
0.803 |
+7.1 |
0.506 |
+3.1 |
0.320 |
+19.0 |
1.993 |
+15.0 |
1.257 |
+11.0 |
0.793 |
+7.0 |
0.501 |
+3.0 |
0.316 |
+18.9 |
1.970 |
+14.9 |
1.243 |
+10.9 |
0.784 |
+6.9 |
0.495 |
+2.9 |
0.312 |
+18.8 |
1.948 |
+14.8 |
1.229 |
+10.8 |
0.775 |
+6.8 |
0.489 |
+2.8 |
0.309 |
+18.7 |
1.925 |
+14.7 |
1.215 |
+10.7 |
0.766 |
+6.7 |
0.484 |
+2.7 |
0.305 |
+18.6 |
1.903 |
+14.6 |
1.201 |
+10.6 |
0.758 |
+6.6 |
0.478 |
+2.6 |
0.302 |
+18.5 |
1.881 |
+14.5 |
1.187 |
+10.5 |
0.749 |
+6.5 |
0.473 |
+2.5 |
0.298 |
+18.4 |
1.860 |
+14.4 |
1.174 |
+10.4 |
0.740 |
+6.4 |
0.467 |
+2.4 |
0.295 |
+18.3 |
1.839 |
+14.3 |
1.160 |
+10.3 |
0.732 |
+6.3 |
0.462 |
+2.3 |
0.291 |
+18.2 |
1.818 |
+14.2 |
1.147 |
+10.2 |
0.724 |
+6.2 |
0.457 |
+2.2 |
0.288 |
+18.1 |
1.797 |
+14.1 |
1.134 |
+10.1 |
0.715 |
+6.1 |
0.451 |
+2.1 |
0.285 |
+18.0 |
1.776 |
+14.0 |
1.121 |
+10.0 |
0.707 |
+6.0 |
0.446 |
+2.0 |
0.282 |
+17.9 |
1.756 |
+13.9 |
1.108 |
+9.9 |
0.699 |
+5.9 |
0.441 |
+1.9 |
0.278 |
+17.8 |
1.736 |
+13.8 |
1.095 |
+9.8 |
0.691 |
+5.8 |
0.436 |
+1.8 |
0.275 |
+17.7 |
1.716 |
+13.7 |
1.083 |
+9.7 |
0.683 |
+5.7 |
0.431 |
+1.7 |
0.272 |
+17.6 |
1.696 |
+13.6 |
1.070 |
+9.6 |
0.675 |
+5.6 |
0.426 |
+1.6 |
0.269 |
+17.5 |
1.677 |
+13.5 |
1.058 |
+9.5 |
0.668 |
+5.5 |
0.421 |
+1.5 |
0.266 |
+17.4 |
1.658 |
+13.4 |
1.046 |
+9.4 |
0.660 |
+5.4 |
0.416 |
+1.4 |
0.263 |
+17.3 |
1.639 |
+13.3 |
1.034 |
+9.3 |
0.652 |
+5.3 |
0.412 |
+1.3 |
0.260 |
+17.2 |
1.620 |
+13.2 |
1.022 |
+9.2 |
0.645 |
+5.2 |
0.407 |
+1.2 |
0.257 |
+17.1 |
1.601 |
+13.1 |
1.010 |
+9.1 |
0.638 |
+5.1 |
0.402 |
+1.1 |
0.254 |
+17.0 |
1.583 |
+13.0 |
0.999 |
+9.0 |
0.630 |
+5.0 |
0.398 |
+1.0 |
0.251 |
+16.9 |
1.565 |
+12.9 |
0.987 |
+8.9 |
0.623 |
+4.9 |
0.393 |
+0.9 |
0.248 |
+16.8 |
1.547 |
+12.8 |
0.976 |
+8.8 |
0.616 |
+4.8 |
0.389 |
+0.8 |
0.245 |
+16.7 |
1.529 |
+12.7 |
0.965 |
+8.7 |
0.609 |
+4.7 |
0.384 |
+0.7 |
0.242 |
+16.6 |
1.512 |
+12.6 |
0.954 |
+8.6 |
0.602 |
+4.6 |
0.380 |
+0.6 |
0.240 |
+16.5 |
1.494 |
+12.5 |
0.943 |
+8.5 |
0.595 |
+4.5 |
0.375 |
+0.5 |
0.237 |
+16.4 |
1.477 |
+12.4 |
0.932 |
+8.4 |
0.588 |
+4.4 |
0.371 |
+0.4 |
0.234 |
+16.3 |
1.460 |
+12.3 |
0.921 |
+8.3 |
0.581 |
+4.3 |
0.367 |
+0.3 |
0.231 |
+16.2 |
1.444 |
+12.2 |
0.911 |
+8.2 |
0.575 |
+4.2 |
0.363 |
+0.2 |
0.229 |
+16.1 |
1.427 |
+12.1 |
0.901 |
+8.1 |
0.568 |
+4.1 |
0.358 |
+0.1 |
0.226 |
駐波系數(shù)、dBm、dBμV、dBmW、V換算表
阻抗匹配關(guān)系換算表:
反射系數(shù):
|
|
駐波系數(shù):
|
|
其中:Z0=Z時(shí),ρ=0、VSWR=1、即完全匹配
ㄧρㄧ |
VSWR |
ㄧρㄧ |
VSWR |
ㄧρㄧ |
VSWR |
ㄧρㄧ |
VSWR |
0.00 |
1.00 |
0.25 |
1.67 |
0.50 |
3.00 |
0.75 |
7.00 |
0.01 |
1.02 |
0.26 |
1.70 |
0.51 |
3.08 |
0.76 |
7.33 |
0.02 |
1.04 |
0.27 |
1.74 |
0.52 |
.317 |
0.77 |
7.70 |
0.03 |
1.06 |
0.28 |
1.78 |
0.53 |
3.26 |
0.78 |
8.09 |
0.04 |
1.08 |
0.29 |
1.82 |
0.54 |
3.35 |
0.79 |
8.52 |
0.05 |
1.11 |
0.30 |
1.86 |
0.55 |
3.44 |
0.80 |
9.00 |
0.06 |
1.13 |
0.31 |
1.90 |
0.56 |
3.55 |
0.81 |
9.53 |
0.07 |
1.15 |
0.32 |
1.94 |
0.57 |
3.65 |
0.82 |
10.11 |
0.08 |
1.17 |
0.33 |
1.99 |
0.58 |
3.76 |
0.83 |
10.76 |
0.09 |
1.20 |
0.34 |
2.03 |
0.59 |
3.88 |
0.84 |
11.50 |
0.10 |
1.22 |
0.35 |
2.08 |
0.60 |
4.00 |
0.85 |
12.33 |
0.11 |
1.25 |
0.36 |
2.13 |
0.61 |
4.13 |
0.86 |
13.29 |
0.12 |
1.27 |
0.37 |
2.17 |
0.62 |
4.26 |
0.87 |
14.38 |
0.13 |
1.30 |
0.38 |
2.23 |
0.63 |
4.41 |
0.88 |
15.67 |
0.14 |
1.33 |
0.39 |
2.28 |
0.64 |
4.56 |
0.89 |
17.18 |
0.15 |
1.35 |
0.40 |
2.33 |
0.65 |
4.71 |
0.90 |
19.00 |
0.16 |
1.38 |
0.41 |
2.39 |
0.66 |
4.88 |
0.91 |
21.22 |
0.17 |
1.41 |
0.42 |
2.45 |
0.67 |
5.06 |
0.92 |
24.00 |
0.18 |
1.44 |
0.43 |
2.51 |
0.68 |
5.25 |
0.93 |
27.57 |
0.19 |
1.47 |
0.44 |
2.57 |
0.69 |
5.45 |
0.94 |
32.33 |
0.20 |
1.50 |
0.45 |
2.64 |
0.70 |
5.67 |
0.95 |
39.00 |
0.21 |
1.53 |
0.46 |
2.70 |
0.71 |
5.90 |
0.96 |
49.00 |
0.22 |
1.56 |
0.47 |
2.77 |
0.72 |
6.14 |
0.97 |
65.67 |
0.23 |
1.60 |
0.48 |
2.85 |
0.73 |
6.41 |
0.98 |
99 |
0.24 |
1.63 |
0.49 |
2.92 |
0.74 |
6.69 |
0.99 |
199 |
|