發布時(shi)間:
2017
-
05
-
18
功(gong)(gong)(gong)率(lv)分(fen)(fen)(fen)配(pei)器(qi)(qi)簡稱為功(gong)(gong)(gong)分(fen)(fen)(fen)器(qi)(qi),是一(yi)種將一(yi)路(lu)(lu)輸入(ru)信號分(fen)(fen)(fen)成兩(liang)(liang)路(lu)(lu)或多路(lu)(lu)功(gong)(gong)(gong)率(lv)相等或不相等的器(qi)(qi)件。功(gong)(gong)(gong)率(lv)分(fen)(fen)(fen)配(pei)器(qi)(qi)也(ye)稱為過流分(fen)(fen)(fen)配(pei)器(qi)(qi),分(fen)(fen)(fen)有(you)源、無源兩(liang)(liang)種,可平均(jun)分(fen)(fen)(fen)配(pei)一(yi)路(lu)(lu)信號變(bian)為幾路(lu)(lu)輸出,一(yi)般每分(fen)(fen)(fen)一(yi)路(lu)(lu)都有(you)幾dB的衰(shuai)減,因信號頻率(lv)不同,分(fen)(fen)(fen)配(pei)器(qi)(qi)功(gong)(gong)(gong)率(lv)衰(shuai)減也(ye)不同。為了(le)(le)補(bu)償(chang)信號衰(shuai)減,在(zai)天饋(kui)系統中加入(ru)干(gan)線放大器(qi)(qi)后,做(zuo)出了(le)(le)無源功(gong)(gong)(gong)分(fen)(fen)(fen)器(qi)(qi)。功(gong)(gong)(gong)分(fen)(fen)(fen)器(qi)(qi)的兩(liang)(liang)個輸出端口之間(jian)須保證一(yi)定隔(ge)離度(du)。