分贝经常用来描述声音,如超过50dB的噪声就会影响人的睡眠和休息,但分贝不仅仅用来描述声音,它还被用来描述电子学等其他领域的物理量,如描述信号强度的衰减 、信噪比等等。 前面提到分贝表示的是两个物理量的比值,作为分母的那个量通常是一个标准的基准值(standard reference value),分贝描述的就是作为分子的物理量相对...
Commonly Encountered dB Values 0dBThe reference level to which all +dB and −dB figures refer. ±1dBThe least noticeable change in audio levels, also used for the limits of bandwidth on high quality audio amplifiers. −3dBCommonly used for limits of bandwidth in amplifiers, indicating the p...
①dBm：是一个表示功率绝对值的值（基准为1mW功率），计算公式为：功率值dBm=10log10(功率值/1mW)②...
dBm uses 1 mW as the reference level. dBmV uses 1 mV as the reference level. dBc is for radio related measurements and uses the strongest carrier as the reference, so normally the dBc value will be negative. I don't know what dBm0 uses as a reference. I have seen it before, but ...
dB,dBm W之换算关系 目录1.名词解释 dB (分贝) 2.数据取对数的意义 3.dBm与dBmV单位换算 4.dBm与W换算 4. dBw与W的换算 5. 天线增益与dBi/dBd 6. dBc 参考文献 1.名词解释 dB (分贝) dB是一个比值,是一个数值,是一个纯计数方法,没有任何单位标注。 在不同领域有着不同的名称,因此它也代表不...
CDA:Results:Maximum Peak Inactive Power (dB or dBm)更新时间2025-01-27 阅读时长1分钟 RFmx TD-SCDMA API Reference LabVIEW G Returns the maximum value among all averaging iterations of the highest measured code power among the set of inactive channels in the code domain of t...
dBm = ASU - 116, ASU in the range of -5..91 and 255 (for not known or not detectable). In LTE networks, ASU maps to RSRP (reference signal received power, see TS 36.133, sub-clause 9.1.4). The valid range of ASU is from 0 to 97. For the range 1 to 96, ASU maps to ...
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Peak Reference Power (dBm) Peak Reference Power Gain (dB) Mean RMS EVM (%) Gain Error Range (dB) Phase Error Range (deg) Mean Phase Error (deg) AM to AM Curve Fit Residual (dB) AM to PM Curve Fit Residual (deg) AM to AM Curve Fit Coefficients ...
In LTE networks, ASU maps to (reference signal received power, see TS 36.133, sub-clause 9.1.4). The valid range of ASU is from 0 to 97. For the range 1 to 96, ASU maps to (ASU - 141) ≤ dBm < (ASU - 140).The value of 0 maps to RSRP below -140 dBm and the value ...