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EDN电子技术设计
5月
什么是dB?dBc、dBm、dBi、dBd有什么区别?-EDN 电子技术 ...
但是,在射频设计中,我们比较常用的就是dBm,dBc,dBi/dBd 这些了。 dBm. 分贝毫瓦 表示功率相对于1毫瓦(mW)的对数值,常用来表示信号的功率大小。 公式如下: 所以0dBm就是1毫瓦,10dBm就是10毫瓦,30dBm才是1瓦,40dBm是10瓦,43dBm是20瓦。
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