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可克達拉光纖直放站的工作原理
光纖直(zhi)放站(zhan)是使(shi)(shi)用光纖進行信號傳輸的直(zhi)放站(zhan)。光纖的使(shi)(shi)用具有傳輸損(sun)耗低,布線方便,適合(he)遠距離傳輸的特點(dian)。
由于無線傳輸(shu)的陰(yin)影效應,移動通信信號(hao)的盲區或弱區經常(chang)形成在(zai)這(zhe)(zhe)些(xie)高(gao)層建(jian)筑(zhu)物的后面或中間。在(zai)蜂(feng)窩移動基站(zhan)的建(jian)設過程中,由于相(xiang)鄰小區的干(gan)擾問題,天(tian)線輻射場方向圖的主瓣具(ju)有(you)大的下傾(qing)角(jiao),因此,高(gao)層建(jian)筑(zhu)物的中上部(bu)無法接(jie)收信號(hao)。這(zhe)(zhe)就是(shi)研究光(guang)纖直放站(zhan)的原因。
光纖直放站主要由光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)近端(duan)(duan)(duan)(duan)機(ji),光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)和(he)光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)遠端(duan)(duan)(duan)(duan)機(ji)(覆蓋單(dan)(dan)元)組成。光(guang)(guang)(guang)(guang)(guang)學近端(duan)(duan)(duan)(duan)機(ji)器和(he)光(guang)(guang)(guang)(guang)(guang)學遠端(duan)(duan)(duan)(duan)機(ji)器都包括射(she)頻(pin)(pin)單(dan)(dan)元和(he)光(guang)(guang)(guang)(guang)(guang)學單(dan)(dan)元。無線(xian)(xian)信(xin)號(hao)(hao)從(cong)基站耦(ou)合后,通過(guo)(guo)(guo)電光(guang)(guang)(guang)(guang)(guang)轉換進入(ru)光(guang)(guang)(guang)(guang)(guang)端(duan)(duan)(duan)(duan)機(ji),將電信(xin)號(hao)(hao)轉換為光(guang)(guang)(guang)(guang)(guang)信(xin)號(hao)(hao),從(cong)光(guang)(guang)(guang)(guang)(guang)端(duan)(duan)(duan)(duan)機(ji)到光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian),再經過(guo)(guo)(guo)通過(guo)(guo)(guo)光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)傳輸(shu)到光(guang)(guang)(guang)(guang)(guang)學遠程機(ji)器。信(xin)號(hao)(hao)被(bei)轉換為電信(xin)號(hao)(hao),并進入(ru)射(she)頻(pin)(pin)單(dan)(dan)元進行(xing)放大(da)。信(xin)號(hao)(hao)放大(da)后,將其發(fa)送到發(fa)射(she)天線(xian)(xian)以覆蓋目標區(qu)域(yu)。上行(xing)鏈路的工(gong)作原理相同。手機(ji)發(fa)送的信(xin)號(hao)(hao)通過(guo)(guo)(guo)接(jie)收(shou)天線(xian)(xian)到達光(guang)(guang)(guang)(guang)(guang)學遠端(duan)(duan)(duan)(duan)機(ji),然(ran)后到達近端(duan)(duan)(duan)(duan)機(ji),然(ran)后返回光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)直(zhi)放站。
科安通(tong)科技有限公司是(shi)無線(xian)通(tong)信(xin)的解決方案提(ti)供商(shang),以提(ti)供高質量專(zhuan)網通(tong)信(xin)設備,調度(du)軟件和(he)公專(zhuan)網融 合通信(xin)系統(tong)服務于安防系統(tong)。本公司以產(chan)(chan)品(pin)質(zhi)量為公司首要(yao),為掌控好每一個產(chan)(chan)品(pin)質(zhi)量,以令人滿意的售前、售中、售后服務,來(lai)贏得(de)客戶(hu)的信(xin)賴(lai)!
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