廣東金陽光電纜頻射傳輸線各個地方的作業電壓和電流的比率是必定的

      特性(xing)阻(zu)抗(kang)：又被稱(cheng)為“特征阻(zu)抗(kang)”，它并不(bu)是(shi)電(dian)阻(zu)丈量，歸屬(shu)于(yu)中長線傳輸(shu)中的界說。在高頻(pin)率領域內，信號(hao)(hao)傳輸(shu)全(quan)過(guo)程中，信號(hao)(hao)沿(yan)抵達的區(qu)域，信號(hao)(hao)線和參(can)照平面圖（開關電(dian)源(yuan)或地平面圖）間由于(yu)靜電(dian)場的創立，會形成(cheng)一個一會兒電(dian)流(liu)，假(jia)設傳輸(shu)線是(shi)各向異(yi)性(xing)的

     那麼只(zhi)需信號(hao)在(zai)傳(chuan)輸(shu)，就從頭到(dao)尾存有一(yi)個電流I，而假設信號(hao)的(de)輸(shu)出脈沖信號(hao)為V，在(zai)信號(hao)傳(chuan)輸(shu)全過程中(zhong)，傳(chuan)輸(shu)線便會等(deng)效電路(lu)成(cheng)(cheng)一(yi)個電阻(zu)器，尺度為V/I，把(ba)這個等(deng)效電路(lu)的(de)電阻(zu)器稱之為傳(chuan)輸(shu)線的(de)特性阻(zu)抗(kang)(kang)Z。信號(hao)在(zai)傳(chuan)輸(shu)的(de)環節中(zhong)，假設傳(chuan)輸(shu)途徑上的(de)特性阻(zu)抗(kang)(kang)發生改變，信號(hao)便會在(zai)阻(zu)抗(kang)(kang)不繼續的(de)節點形成(cheng)(cheng)反射面。損害特性阻(zu)抗(kang)(kang)的(de)要(yao)素有：相對介電常(chang)數，物質(zhi)薄厚，圖形邊界(jie)，銅泊薄厚。

     特性(xing)(xing)阻(zu)抗(kang)(kang)是頻(pin)(pin)射傳(chuan)輸(shu)線(xian)(xian)損害電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)波(bo)作業電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)起(qi)伏值(zhi)和相(xiang)(xiang)(xiang)位(wei)(wei)差(cha)改變(bian)的(de)(de)(de)(de)(de)原有特色，相(xiang)(xiang)(xiang)當于各個(ge)地方的(de)(de)(de)(de)(de)作業電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)與電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)比(bi)率(lv)，用標明。在射頻(pin)(pin)電(dian)(dian)(dian)(dian)(dian)(dian)路中(zhong)，電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)器，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器，電(dian)(dian)(dian)(dian)(dian)(dian)感(gan)器都是會阻(zu)撓(nao)替換(huan)改變(bian)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)流(liu)(liu)(liu)動(dong)性(xing)(xing)，總稱阻(zu)抗(kang)(kang)。電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)器是消(xiao)化(hua)吸(xi)收(shou)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)感(gan)應(ying)能(neng)量轉化(hua)的(de)(de)(de)(de)(de)，理想(xiang)化(hua)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器和電(dian)(dian)(dian)(dian)(dian)(dian)感(gan)器不(bu)消(xiao)耗電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)感(gan)應(ying)動(dong)能(neng)。阻(zu)抗(kang)(kang)合起(qi)來損害電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)波(bo)作業電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)起(qi)伏值(zhi)和相(xiang)(xiang)(xiang)位(wei)(wei)差(cha)。同軸(zhou)線(xian)(xian)的(de)(de)(de)(de)(de)特性(xing)(xing)阻(zu)抗(kang)(kang)和電(dian)(dian)(dian)(dian)(dian)(dian)導(dao)體內，外直徑粗細及電(dian)(dian)(dian)(dian)(dian)(dian)導(dao)體間物質的(de)(de)(de)(de)(de)相(xiang)(xiang)(xiang)對介(jie)電(dian)(dian)(dian)(dian)(dian)(dian)常數相(xiang)(xiang)(xiang)關(guan)，而與輸(shu)出(chu)功率(lv)傳(chuan)輸(shu)線(xian)(xian)所接的(de)(de)(de)(de)(de)射頻(pin)(pin)器材及其傳(chuan)輸(shu)線(xian)(xian)長度不(bu)相(xiang)(xiang)(xiang)干。換(huan)句話(hua)說，頻(pin)(pin)射傳(chuan)輸(shu)線(xian)(xian)各個(ge)地方的(de)(de)(de)(de)(de)作業電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)比(bi)率(lv)是必定的(de)(de)(de)(de)(de)，特色阻(zu)抗(kang)(kang)是共同的(de)(de)(de)(de)(de)。 

      現階段無線通訊系統(tong)軟(ruan)件射頻器材有二種(zhong)特性阻抗(kang)，一種(zhong)是(shi)50W，用以軍(jun)工用微波加熱，GSM，WCDMA等系統(tong)軟(ruan)件；另一種(zhong)是(shi)75W，用以有線數字電視系統(tong)軟(ruan)件，一般(ban)運(yun)用較少(shao)。