100MW等于多少dbm??? 负100dbm等于多少 毫瓦

100MW\u7b49\u4e8e\u591a\u5c11dbm

\u9996\u5148\u8981\u786e\u8ba4\u4f60\u8fd9\u91cc\u7684\u5355\u4f4d\u2018MW\u2019\u662f\u4ec0\u4e48\u610f\u601d\uff1f
\u5728\u7269\u7406\u5355\u4f4d\u7684\u8868\u793a\u4e2d\u6bcf\u4e2a\u5b57\u6bcd\u7684\u5927\u5c0f\u5199\u662f\u7531\u533a\u522b\u7684\u3002\u5c0f\u5199\u7684m\u662f\u4ee3\u8868\u2018\u6beb\u2019=10^(-3)\uff0c\u800c\u5927\u5199\u7684M\u5219\u4ee3\u8868\u2018\u5146\u2019\uff08\u767e\u4e07\uff09=10^6. \u6240\u4ee5\u2018MW\u2019\u548c\u2018mW\u2019\u670910^9\u7684\u500d\u5dee\uff0890db\uff09\u3002
\u76f8\u5bf9\u529f\u7387\uff08\u573a\u80fd\uff09\u5927\u5c0f\u503c\u4e60\u60ef\u4e0a\u4ee5dbm\uff08\u5206\u8d1d\u6beb\u74e6\uff09\u6765\u8868\u793a\u3002
dbm=10\u33d2(P/1mW), 1mW=0dbm;
\u2234100mW=20dbm, 100MW=10^11mW=110dbm

1\u540e\u976213\u4e2a\u96f6\u5206\u4e4b\u4e00\u74e6\uff0c1E-13W

100mW=20dBm

dbm=10*log(power/1mW)
dbm=10*log100
=10*2
=20dbm

表示没看懂= =。dbm是神马= =

100mw鎹㈢畻鎴恉Bw鏄
绛旓細100mW=30+10lg10^-1=20dbm 鍔熺巼涓巇bm鎹㈢畻鍏紡锛歅'dBm=30+10lgP (P:鐡:鍗曚綅涓篸bm)鍒嗚礉姣摝(dBm锛屽叏鍐欎负鈥渄ecibel relative to one milliwatt鈥)涓轰竴涓寚浠ｅ姛鐜囩殑缁濆鍊硷紝鑰屼笉鍚屼簬dB鍙槸涓涓浉瀵瑰笺

100MW绛変簬澶氬皯dbm???
绛旓細100mW=20dBm

100MW绛変簬澶氬皯dbm
绛旓細鈭100mW=20dbm, 100MW=10^11mW=110dbm

鍦ㄥ搴粍缃戜腑,鏃犵嚎浜у搧鏈澶у彂灏勭巼涓100mw,鐩稿綋浜庡灏慸bm
绛旓細100mW=30+10lg10^-1=20dbm 鍔熺巼涓巇bm鎹㈢畻鍏紡锛歅'dBm=30+10lgP (P:鐡︼紱P':鍗曚綅涓篸bm)鍒嗚礉姣摝(dBm锛屽叏鍐欎负鈥渄ecibel relative to one milliwatt鈥)涓轰竴涓寚浠ｅ姛鐜囩殑缁濆鍊硷紝鑰屼笉鍚屼簬dB鍙槸涓涓浉瀵瑰笺

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