光纖直放站(zhan)是使(shi)(shi)用(yong)光纖進行信號傳(chuan)輸(shu)的(de)直放站(zhan)。光纖的(de)使(shi)(shi)用(yong)具有傳(chuan)輸(shu)損耗低，布線方便，適(shi)合遠距離傳(chuan)輸(shu)的(de)特點(dian)。

由于無線傳輸(shu)的陰(yin)影(ying)效應，移動通信(xin)信(xin)號的盲區或弱區經常形成在(zai)這(zhe)些高層建筑物(wu)的后面或中(zhong)(zhong)間。在(zai)蜂窩移動基站的建設(she)過程中(zhong)(zhong)，由于相(xiang)鄰小(xiao)區的干(gan)擾問題，天線輻(fu)射場方(fang)向圖的主瓣具(ju)有大的下傾角，因(yin)此(ci)，高層建筑物(wu)的中(zhong)(zhong)上部無法接收信(xin)號。這(zhe)就是研(yan)究光纖直放站的原(yuan)因(yin)。

光纖直放站主要(yao)由光(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)近端(duan)(duan)機(ji)(ji)，光(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)和光(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)遠(yuan)端(duan)(duan)機(ji)(ji)（覆蓋(gai)單(dan)元）組成(cheng)。光(guang)(guang)(guang)(guang)學(xue)近端(duan)(duan)機(ji)(ji)器(qi)(qi)和光(guang)(guang)(guang)(guang)學(xue)遠(yuan)端(duan)(duan)機(ji)(ji)器(qi)(qi)都包括射頻單(dan)元和光(guang)(guang)(guang)(guang)學(xue)單(dan)元。無線(xian)(xian)信(xin)號(hao)從基(ji)站耦(ou)合后，通(tong)(tong)(tong)過電光(guang)(guang)(guang)(guang)轉(zhuan)換(huan)進(jin)入光(guang)(guang)(guang)(guang)端(duan)(duan)機(ji)(ji)，將電信(xin)號(hao)轉(zhuan)換(huan)為光(guang)(guang)(guang)(guang)信(xin)號(hao)，從光(guang)(guang)(guang)(guang)端(duan)(duan)機(ji)(ji)到(dao)光(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)，再經過通(tong)(tong)(tong)過光(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)傳輸到(dao)光(guang)(guang)(guang)(guang)學(xue)遠(yuan)程機(ji)(ji)器(qi)(qi)。信(xin)號(hao)被轉(zhuan)換(huan)為電信(xin)號(hao)，并進(jin)入射頻單(dan)元進(jin)行放大(da)。信(xin)號(hao)放大(da)后，將其發送(song)到(dao)發射天(tian)線(xian)(xian)以覆蓋(gai)目標區(qu)域。上(shang)行鏈路的工作原理相同。手(shou)機(ji)(ji)發送(song)的信(xin)號(hao)通(tong)(tong)(tong)過接(jie)收天(tian)線(xian)(xian)到(dao)達(da)光(guang)(guang)(guang)(guang)學(xue)遠(yuan)端(duan)(duan)機(ji)(ji)，然后到(dao)達(da)近端(duan)(duan)機(ji)(ji)，然后返回光(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)直放站。

科安通(tong)科技有限(xian)公(gong)司(si)是無(wu)線通(tong)信(xin)的解決(jue)方(fang)案(an)提供商(shang)，以(yi)提供高質量專(zhuan)網通(tong)信(xin)設備，調度(du)軟(ruan)件和(he)公(gong)專(zhuan)網融 合(he)通(tong)信(xin)系統服務于安防系統。本公司以產品(pin)質量為公司首要(yao)，為掌控好每一個產品(pin)質量，以令(ling)人滿意的售前、售中(zhong)、售后服務，來贏得客戶的信(xin)賴！