dbm log

在這600 歐姆電路,則dBm 的數值是定位於 dBm = 20 log ( E / 0.775 ) 式中的E 是經量測後得到的電壓值. 參考資料: http://www.sounderpro.com.tw/Reviw/dB.html 匿名使用者 · 13 年前 0

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  • 在這600 歐姆電路,則dBm 的數值是定位於 dBm = 20 log ( E / 0.775 ) 式中的E 是經量測後得到的電壓值. 參考資料: http://www.soun...
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  • 2/15/2005 dB.doc 1/9 Jim Stiles The Univ. of Kansas Dept. of EECS For example, amplifier g...
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  • 這是一個說明聲源能量x與聲壓√x與聲音分貝數10 log 10 x的正比關係的對照表. It is easier to grasp and compare 2- or 3-digi...
    分貝 - 維基百科,自由的百科全書
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  • dB/dBW/dBm cheat sheet • dB is a logarithmic ratio of powers. So saying P1 = 2· P2 is equi...
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  • (已重新導向自 DBm ) 前往: 導覽、 搜尋 分貝毫瓦(dBm,全寫為「decibel relative to one milliwatt」)為一個指代功率的絕對值,而不同於d...
    分貝毫瓦 - 維基百科,自由的百科全書
    https://zh.wikipedia.org