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[讨论] 一个简单的问题

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发表于 2007-1-28 22:19:55 | 显示全部楼层 |阅读模式
dBuV和dBW之间是如何进行转换的？请指教
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 楼主| 发表于 2007-1-28 22:19:55 | 显示全部楼层 |阅读模式
dBuV和dBW之间是如何进行转换的？请指教
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发表于 2007-1-29 08:51:43 | 显示全部楼层
<DIV class=quote><B>以下是引用<I>vf1983cs</I>在2007-1-28 22:19:55的发言：</B>
dBuV和dBW之间是如何进行转换的？请指教</DIV>



POWER CONVERSION TABLE
  System:50W
dBmmWdBmVmV(RMS)mVpmVppuV(RMS)dBuV
-1301.00E-13-83.017.07E-051.00E-042.00E-047.07E-02-23.01
-1001.00E-10-53.012.24E-033.16E-036.32E-032.24E+006.99
-501.00E-05-3.017.07E-011.00E+002.00E+007.07E+0256.99
-453.16E-051.991.261.783.561.26E+0361.99
-401.00E-046.992.243.166.322.24E+0366.99
-353.16E-0411.993.985.6211.253.98E+0371.99
-301.00E-0316.997.0710.0020.007.07E+0376.99
-253.16E-0321.9912.5717.7835.571.26E+0481.99
-200.0126.9922.3631.6263.252.24E+0486.99
-150.0331.9939.7656.23112.473.98E+0491.99
-100.1036.9970.71100.00200.007.07E+0496.99
-50.3241.99125.74177.83355.661.26E+05101.99
01.0046.99223.61316.23632.462.24E+05106.99
11.2647.99250.89354.81709.632.51E+05107.99
21.5848.99281.50398.11796.212.82E+05108.99
32.0049.99315.85446.68893.373.16E+05109.99
42.5150.99354.39501.191002.373.54E+05110.99
53.1651.99397.64562.341124.683.98E+05111.99
63.9852.99446.15630.961261.914.46E+05112.99
75.0153.99500.59707.951415.895.01E+05113.99
86.3154.99561.67794.331588.665.62E+05114.99
97.9455.99630.21891.251782.506.30E+05115.99
1010.0056.99707.111000.002000.007.07E+05116.99
1112.5957.99793.391122.022244.047.93E+05117.99
1215.8558.99890.191258.932517.858.90E+05118.99
1319.9559.99998.811412.542825.089.99E+05119.99
1425.1260.991120.691584.893169.791.12E+06120.99
1531.6261.991257.431778.283556.561.26E+06121.99
1639.8162.991410.861995.263990.521.41E+06122.99
1750.1263.991583.012238.724477.441.58E+06123.99
1863.1064.991776.172511.895023.771.78E+06124.99
1979.4365.991992.902818.385636.771.99E+06125.99
20100.0066.992236.073162.286324.562.24E+06126.99
21125.8967.992508.913548.137096.272.51E+06127.99
22158.4968.992815.043981.077962.142.82E+06128.99
23199.5369.993158.534466.848933.673.16E+06129.99
24251.1970.993543.935011.8710023.743.54E+06130.99
25316.2371.993976.355623.4111246.833.98E+06131.99
26398.1172.994461.546309.5712619.154.46E+06132.99
27501.1973.995005.937079.4614158.925.01E+06133.99
28630.9674.995616.757943.2815886.565.62E+06134.99
29794.3375.996302.108912.5117825.026.30E+06135.99
301000.0076.997071.0710000.0020000.007.07E+06136.99
311258.9377.997933.8711220.1822440.377.93E+06137.99
321584.8978.998901.9512589.2525178.518.90E+06138.99
331995.2679.999988.1514125.3828250.759.99E+06139.99
342511.8980.9911206.8915848.9331697.861.12E+07140.99
353162.2881.9912574.3317782.7935565.591.26E+07141.99
363981.0782.9914108.6419952.6239905.251.41E+07142.99
375011.8783.9915830.1522387.2144774.421.58E+07143.99
386309.5784.9917761.7225118.8650237.731.78E+07144.99
397943.2885.9919928.9828183.8356367.661.99E+07145.99
4010000.0086.9922360.6831622.7863245.552.24E+07146.99[br]<p align=right><font color=red>+3 RD币</font></p>
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发表于 2007-1-29 09:47:56 | 显示全部楼层
system:应当是50欧姆吧？！
简单就是从最基本的P=U^2/R计算来的。
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卡妙
发表于 2007-1-30 13:42:14 | 显示全部楼层
有两种情况，一种是开路，一种是50欧姆负载。如果是50欧姆的话，将dBuV和dBW都换成V和W，用功率公式一下子就算出来了！
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发表于 2007-1-29 08:51:43 | 显示全部楼层
<DIV class=quote><B>以下是引用<I>vf1983cs</I>在2007-1-28 22:19:55的发言：</B>
dBuV和dBW之间是如何进行转换的？请指教</DIV>



POWER CONVERSION TABLE
  System:50W
dBmmWdBmVmV(RMS)mVpmVppuV(RMS)dBuV
-1301.00E-13-83.017.07E-051.00E-042.00E-047.07E-02-23.01
-1001.00E-10-53.012.24E-033.16E-036.32E-032.24E+006.99
-501.00E-05-3.017.07E-011.00E+002.00E+007.07E+0256.99
-453.16E-051.991.261.783.561.26E+0361.99
-401.00E-046.992.243.166.322.24E+0366.99
-353.16E-0411.993.985.6211.253.98E+0371.99
-301.00E-0316.997.0710.0020.007.07E+0376.99
-253.16E-0321.9912.5717.7835.571.26E+0481.99
-200.0126.9922.3631.6263.252.24E+0486.99
-150.0331.9939.7656.23112.473.98E+0491.99
-100.1036.9970.71100.00200.007.07E+0496.99
-50.3241.99125.74177.83355.661.26E+05101.99
01.0046.99223.61316.23632.462.24E+05106.99
11.2647.99250.89354.81709.632.51E+05107.99
21.5848.99281.50398.11796.212.82E+05108.99
32.0049.99315.85446.68893.373.16E+05109.99
42.5150.99354.39501.191002.373.54E+05110.99
53.1651.99397.64562.341124.683.98E+05111.99
63.9852.99446.15630.961261.914.46E+05112.99
75.0153.99500.59707.951415.895.01E+05113.99
86.3154.99561.67794.331588.665.62E+05114.99
97.9455.99630.21891.251782.506.30E+05115.99
1010.0056.99707.111000.002000.007.07E+05116.99
1112.5957.99793.391122.022244.047.93E+05117.99
1215.8558.99890.191258.932517.858.90E+05118.99
1319.9559.99998.811412.542825.089.99E+05119.99
1425.1260.991120.691584.893169.791.12E+06120.99
1531.6261.991257.431778.283556.561.26E+06121.99
1639.8162.991410.861995.263990.521.41E+06122.99
1750.1263.991583.012238.724477.441.58E+06123.99
1863.1064.991776.172511.895023.771.78E+06124.99
1979.4365.991992.902818.385636.771.99E+06125.99
20100.0066.992236.073162.286324.562.24E+06126.99
21125.8967.992508.913548.137096.272.51E+06127.99
22158.4968.992815.043981.077962.142.82E+06128.99
23199.5369.993158.534466.848933.673.16E+06129.99
24251.1970.993543.935011.8710023.743.54E+06130.99
25316.2371.993976.355623.4111246.833.98E+06131.99
26398.1172.994461.546309.5712619.154.46E+06132.99
27501.1973.995005.937079.4614158.925.01E+06133.99
28630.9674.995616.757943.2815886.565.62E+06134.99
29794.3375.996302.108912.5117825.026.30E+06135.99
301000.0076.997071.0710000.0020000.007.07E+06136.99
311258.9377.997933.8711220.1822440.377.93E+06137.99
321584.8978.998901.9512589.2525178.518.90E+06138.99
331995.2679.999988.1514125.3828250.759.99E+06139.99
342511.8980.9911206.8915848.9331697.861.12E+07140.99
353162.2881.9912574.3317782.7935565.591.26E+07141.99
363981.0782.9914108.6419952.6239905.251.41E+07142.99
375011.8783.9915830.1522387.2144774.421.58E+07143.99
386309.5784.9917761.7225118.8650237.731.78E+07144.99
397943.2885.9919928.9828183.8356367.661.99E+07145.99
4010000.0086.9922360.6831622.7863245.552.24E+07146.99[br]<p align=right><font color=red>+3 RD币</font></p>
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发表于 2007-1-29 09:47:56 | 显示全部楼层
system:应当是50欧姆吧？！
简单就是从最基本的P=U^2/R计算来的。
点评回复

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卡妙
发表于 2007-1-30 13:42:14 | 显示全部楼层
有两种情况，一种是开路，一种是50欧姆负载。如果是50欧姆的话，将dBuV和dBW都换成V和W，用功率公式一下子就算出来了！
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