發布時(shi)間：
2017
-
05
-
18
性(xing)能(neng)特點(dian)：（1）工作(zuo)(zuo)穩(wen)定，覆(fu)(fu)(fu)蓋(gai)(gai)效果(guo)好:光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)直放(fang)(fang)(fang)站(zhan)(zhan)(zhan)(zhan)(zhan)通(tong)過(guo)(guo)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)傳(chuan)輸信(xin)(xin)(xin)(xin)號(hao)(hao)，不(bu)受地理環境(jing)、天(tian)氣變(bian)化或基(ji)站(zhan)(zhan)(zhan)(zhan)(zhan)覆(fu)(fu)(fu)蓋(gai)(gai)范圍調(diao)整的(de)(de)(de)影(ying)響，因(yin)此(ci)工作(zuo)(zuo)穩(wen)定，覆(fu)(fu)(fu)蓋(gai)(gai)效果(guo)好。（2）設(she)計(ji)和施(shi)(shi)工更為(wei)靈(ling)活:光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)直放(fang)(fang)(fang)站(zhan)(zhan)(zhan)(zhan)(zhan)在(zai)設(she)計(ji)時(shi)無需(xu)(xu)考慮安裝地點(dian)能(neng)否接收(shou)到(dao)信(xin)(xin)(xin)(xin)號(hao)(hao)；不(bu)需(xu)(xu)考慮收(shou)發隔離(li)問題，選址方(fang)便；覆(fu)(fu)(fu)蓋(gai)(gai)天(tian)線(xian)可根據需(xu)(xu)要采用全向或定向天(tian)線(xian)。另外射(she)(she)(she)頻(pin)(pin)信(xin)(xin)(xin)(xin)號(hao)(hao)能(neng)夠在(zai)很小(xiao)的(de)(de)(de)傳(chuan)送(song)(song)損失的(de)(de)(de)情況下(xia)(xia)被傳(chuan)送(song)(song)到(dao)遠(yuan)(yuan)達20公里的(de)(de)(de)遠(yuan)(yuan)處，光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)很細(xi)，容易敷設(she)。因(yin)此(ci)，設(she)計(ji)和施(shi)(shi)工的(de)(de)(de)靈(ling)活性(xing)大(da)。（３）避免同(tong)頻(pin)(pin)干擾，可全向覆(fu)(fu)(fu)蓋(gai)(gai)，干擾少:光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)直放(fang)(fang)(fang)站(zhan)(zhan)(zhan)(zhan)(zhan)是(shi)為(wei)了擴(kuo)大(da)或延續基(ji)站(zhan)(zhan)(zhan)(zhan)(zhan)的(de)(de)(de)覆(fu)(fu)(fu)蓋(gai)(gai)范圍，把下(xia)(xia)行(xing)(xing)射(she)(she)(she)頻(pin)(pin)信(xin)(xin)(xin)(xin)號(hao)(hao)變(bian)成(cheng)(cheng)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)后，從(cong)基(ji)站(zhan)(zhan)(zhan)(zhan)(zhan)到(dao)遠(yuan)(yuan)程(cheng)區域，可使(shi)干擾及插入(ru)損失減小(xiao)到(dao)最小(xiao)。（４）可提高增益而不(bu)會自激(ji)，有利于加大(da)下(xia)(xia)行(xing)(xing)信(xin)(xin)(xin)(xin)號(hao)(hao)發射(she)(she)(she)功率；光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)直放(fang)(fang)(fang)站(zhan)(zhan)(zhan)(zhan)(zhan)是(shi)由近(jin)端(duan)(duan)(duan)機(ji)和遠(yuan)(yuan)構(gou)成(cheng)(cheng)的(de)(de)(de)。近(jin)端(duan)(duan)(duan)機(ji)通(tong)過(guo)(guo)耦合(he)器(qi)(qi)(qi)耦合(he)基(ji)站(zhan)(zhan)(zhan)(zhan)(zhan)下(xia)(xia)行(xing)(xing)信(xin)(xin)(xin)(xin)號(hao)(hao)，并(bing)(bing)入(ru)近(jin)端(duan)(duan)(duan)機(ji)射(she)(she)(she)頻(pin)(pin)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)模(mo)塊將(jiang)基(ji)站(zhan)(zhan)(zhan)(zhan)(zhan)的(de)(de)(de)下(xia)(xia)行(xing)(xing)射(she)(she)(she)頻(pin)(pin)信(xin)(xin)(xin)(xin)號(hao)(hao)通(tong)過(guo)(guo)電(dian)(dian)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)轉(zhuan)換部件(jian)轉(zhuan)換成(cheng)(cheng)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)信(xin)(xin)(xin)(xin)號(hao)(hao)并(bing)(bing)經(jing)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)傳(chuan)輸至(zhi)遠(yuan)(yuan)端(duan)(duan)(duan)機(ji)，在(zai)遠(yuan)(yuan)端(duan)(duan)(duan)機(ji)的(de)(de)(de)射(she)(she)(she)頻(pin)(pin)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)模(mo)塊將(jiang)接收(shou)到(dao)的(de)(de)(de)下(xia)(xia)行(xing)(xing)的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)信(xin)(xin)(xin)(xin)號(hao)(hao)轉(zhuan)化成(cheng)(cheng)相(xiang)應的(de)(de)(de)射(she)(she)(she)頻(pin)(pin)信(xin)(xin)(xin)(xin)號(hao)(hao)，該射(she)(she)(she)頻(pin)(pin)信(xin)(xin)(xin)(xin)號(hao)(hao)經(jing)功率放(fang)(fang)(fang)大(da)器(qi)(qi)(qi)放(fang)(fang)(fang)大(da)變(bian)為(wei)所(suo)需(xu)(xu)要的(de)(de)(de)功率電(dian)(dian)平信(xin)(xin)(xin)(xin)號(hao)(hao)，并(bing)(bing)通(tong)過(guo)(guo)雙工器(qi)(qi)(qi)由重發天(tian)線(xian)發射(she)(she)(she)出去，進(jin)行(xing)(xing)區域覆(fu)(fu)(fu)蓋(gai)(gai)；反之(zhi)由光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)直放(fang)(fang)(fang)站(zhan)(zhan)(zhan)(zhan)(zhan)的(de)(de)(de)重發天(tian)線(xian)接收(shou)到(dao)的(de)(de)(de)上行(xing)(xing)信(xin)(xin)(xin)(xin)號(hao)(hao)經(jing)過(guo)(guo)低噪聲(sheng)放(fang)(fang)(fang)大(da)器(qi)(qi)(qi)放(fang)(fang)(fang)大(da)到(dao)一定的(de)(de)(de)電(dian)(dian)平射(she)(she)(she)頻(pin)(pin)信(xin)(xin)(xin)(xin)號(hao)(hao)，通(tong)過(guo)(guo)遠(yuan)(yuan)端(duan)(duan)(duan)機(ji)的(de)(de)(de)射(she)(she)(she)頻(pin)(pin)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)模(mo)塊進(jin)行(xing)(xing)電(dian)(dian)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)轉(zhuan)換換成(cheng)(cheng)信(xin)(xin)(xin)(xin)號(hao)(hao)并(bing)(bing)經(jing)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)傳(chuan)輸至(zhi)近(jin)端(duan)(duan)(duan)機(ji)，在(zai)近(jin)端(duan)(duan)(duan)機(ji)的(de)(de)(de)射(she)(she)(she)頻(pin)(pin)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)模(mo)塊將(jiang)接收(shou)到(dao)的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)信(xin)(xin)(xin)(xin)號(hao)(hao)轉(zhuan)化成(cheng)(cheng)相(xiang)應的(de)(de)(de)射(she)(she)(she)頻(pin)(pin)信(xin)(xin)(xin)(xin)號(hao)(hao)，并(bing)(bing)經(jing)功率放(fang)(fang)(fang)大(da)器(qi)(qi)(qi)變(bian)為(wei)所(suo)需(xu)(xu)要的(de)(de)(de)功率電(dian)(dian)平信(xin)(xin)(xin)(xin)號(hao)(hao)，并(bing)(bing)入(ru)耦合(he)器(qi)(qi)(qi)耦合(he)發送(song)(song)到(dao)基(ji)站(zhan)(zhan)(zhan)(zhan)(zhan)，從(cong)而構(gou)成(cheng)(cheng)由光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)作(zuo)(zuo)為(wei)傳(chuan)輸介質的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)(xian)直放(fang)(fang)(fang)站(zhan)(zhan)(zhan)(zhan)(zhan)系統。