• 武漢科安通科技有限公司
  • 武漢科安通科技有限公司
  • 武漢科安通科技有限公司

行業新聞

銅陵光纖直放站的工作原理

2021-06-28 閱讀 73464

光(guang)纖(xian)直(zhi)放(fang)站是(shi)使用光(guang)纖(xian)進(jin)行信號(hao)傳(chuan)輸(shu)(shu)的直(zhi)放(fang)站。光(guang)纖(xian)的使用具(ju)有傳(chuan)輸(shu)(shu)損耗低,布線方便,適合遠距離(li)傳(chuan)輸(shu)(shu)的特點(dian)。

由于(yu)無(wu)線傳輸的(de)陰(yin)影(ying)效應,移(yi)(yi)動通信信號的(de)盲區或弱區經常形(xing)成在這些(xie)高層建(jian)筑物(wu)的(de)后面(mian)或中間。在蜂窩移(yi)(yi)動基(ji)站的(de)建(jian)設過程中,由于(yu)相鄰小區的(de)干擾問題,天線輻射場方向圖的(de)主瓣(ban)具有大的(de)下傾(qing)角,因(yin)此,高層建(jian)筑物(wu)的(de)中上(shang)部(bu)無(wu)法接(jie)收(shou)信號。這就是研究光纖(xian)直放站的(de)原(yuan)因(yin)。

光纖直放站主要由(you)光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)近(jin)端(duan)(duan)機(ji),光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)和光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)遠(yuan)端(duan)(duan)機(ji)(覆(fu)蓋單(dan)元)組成。光(guang)(guang)(guang)(guang)(guang)學近(jin)端(duan)(duan)機(ji)器(qi)(qi)和光(guang)(guang)(guang)(guang)(guang)學遠(yuan)端(duan)(duan)機(ji)器(qi)(qi)都包括射(she)頻(pin)單(dan)元和光(guang)(guang)(guang)(guang)(guang)學單(dan)元。無線信(xin)號(hao)(hao)(hao)從基站耦合后,通(tong)過(guo)(guo)(guo)電光(guang)(guang)(guang)(guang)(guang)轉(zhuan)換進入光(guang)(guang)(guang)(guang)(guang)端(duan)(duan)機(ji),將電信(xin)號(hao)(hao)(hao)轉(zhuan)換為(wei)光(guang)(guang)(guang)(guang)(guang)信(xin)號(hao)(hao)(hao),從光(guang)(guang)(guang)(guang)(guang)端(duan)(duan)機(ji)到光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian),再經(jing)過(guo)(guo)(guo)通(tong)過(guo)(guo)(guo)光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)傳(chuan)輸到光(guang)(guang)(guang)(guang)(guang)學遠(yuan)程機(ji)器(qi)(qi)。信(xin)號(hao)(hao)(hao)被轉(zhuan)換為(wei)電信(xin)號(hao)(hao)(hao),并進入射(she)頻(pin)單(dan)元進行放大。信(xin)號(hao)(hao)(hao)放大后,將其發送(song)到發射(she)天(tian)線以覆(fu)蓋目標區域。上行鏈路的工作原理(li)相同(tong)。手機(ji)發送(song)的信(xin)號(hao)(hao)(hao)通(tong)過(guo)(guo)(guo)接收天(tian)線到達光(guang)(guang)(guang)(guang)(guang)學遠(yuan)端(duan)(duan)機(ji),然(ran)后到達近(jin)端(duan)(duan)機(ji),然(ran)后返(fan)回(hui)光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)直放站。

科(ke)安通(tong)科(ke)技(ji)有限公(gong)司(si)是無線(xian)通(tong)信的解(jie)決方案提供(gong)商,以(yi)提供(gong)高質量(liang)專(zhuan)網通(tong)信設備,調度(du)軟件和公(gong)專(zhuan)網融 合(he)通(tong)信系(xi)統(tong)服(fu)務(wu)于安防系(xi)統(tong)。本公司以(yi)產品(pin)質量(liang)為公司首要,為掌控(kong)好每一個(ge)產品(pin)質量(liang),以(yi)令人(ren)滿意的售(shou)前、售(shou)中(zhong)、售(shou)后服(fu)務(wu),來贏得(de)客戶的信賴!

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