Isingeniso:
Izintambo zokuphakelayo zidlala indima ebaluleke kakhulu ezinhlelweni zesimanje zokuxhumana ngocingo emhlabeni wonke. Lezi yizintambo ezikhethekile ezenzelwe ukuthuthukisa ukusebenza kahle kanye nokusebenza kahle kokudluliselwa kwesiginali, ikakhulukazi eziteshini ezidlulayo zenethiwekhi yokusakaza. Umongo wokuba nezintambo zokuphakelayo ulele emandleni abo okuletha amandla nezimpawu eziphakathi kwezakhi ezahlukene ngaphakathi kohlelo ngenxa yomthamo wazo ophakeme kanye nokulahlekelwa okuphezulu kwesiginali.
Izinhlobo nokwakheka kwezintambo zokuphakelayo:
Ngokuvamile, izintambo zokuphakelayo zihlukaniswe ngezinhlobo ezimbili eziphambili: i-coaxial ne-fiber optic. Owokuqala, e-coaxial, kusetshenziswa kabanzi kwizicelo zeRadio Frequency (RF) ngenxa yokuhlukaniswa kwayo okulungiselelwe kwangaphandle kwe-electromagnete. Le ntambo ihlanganisa umqhubi wesifundo sangaphakathi, umsukelisi, umqhubi wesifundo sangaphandle kanye nomgodi wangaphandle. Ibhalansi enhle kakhulu phakathi kokusebenza nezindleko kuvame ukufinyelelwa ngezintambo ze-coaxial, ezibenza babe ukukhetha okuthandwayo embonini yezokuxhumana ngocingo.
Ngakolunye uhlangothi, ukusebenza kwamakhebuli we-fiber optic njengenye indlela engcono lapho kudingeka khona ukuhanjiswa kwesiginali okude. Lawa makhamera aqasha imicu yemicu yengilazi ngaphakathi kwecala elifakiwe, elivumela ukuhanjiswa okusheshayo kombani.
Izicelo zezintambo ze-feeder:
Izintambo zokuphakelayo zivame ukusetshenziswa emikhakheni ehlukahlukene, kufaka phakathi ukusakaza, ukuxhumana ngocingo, ubuchwepheshe bolwazi, ezempi kanye nokuningi. Ukusetshenziswa kwabo ekuhambiseni amasiginali avela emthonjeni ophakathi kuya kulayini wokusabalalisa noma amadivayisi amaningi iphuzu elibalulekile lokuthengisa. Lezi zintambo zithola ukusetshenziswa okubanzi ekusethweni kwamanethiwekhi amaselula, lapho amasignali kufanele adluliselwe khona esiteshini sesisekelo ohlelweni lwe-antenna.
Izintambo zokuphakelayo ziphakathi nokusebenza kwamanethiwekhi wethelevishini wekhebula. Banesibopho sokuhambisa amasiginali wethelevishini emthonjeni omkhulu wokuhambisa e-antenna yomphakathi, eqinisekisa ikhwalithi ephezulu yesithombe lapho ethola khona.
Izinzuzo zezintambo zokuphakelayo:
Ngokusobala, izintambo ze-feeder 'izici ezivelele ziwukuthwala kwakho okuphezulu, ukulahleka kwesiginali ephansi, kanye nokumelana nokuphazamiseka kwe-electromagnetic. Baklanyelwe ngokuqinile ukwenza kahle ngaphansi kwezimo eziyinselele. Izingxenye ezibalulekile zezinhlelo eziningi zokusakaza nezokuxhumana, lezi zintambo zisiza ekudluliseleni okunembile futhi okusheshayo kwezimpawu ngaphesheya kwamabanga ahlukahlukene.
Isiphetho:
Ekuphetheni, izintambo zokudla ziyisisekelo setsheni sanamuhla, amasistimu okusakaza, namanethiwekhi angenantambo, ukushayela umphakathi ukuxhumana okusheshayo, okusebenzayo, nokuthembekile. Amandla abo okunciphisa ukulahleka kwesiginali, ukumelana kwabo nokuphazanyiswa, namandla abo awonke abenza babe yingxenye ebucayi emikhakheni ehlukahlukene yomnotho. Njengoba ubuchwepheshe buqhubeka buqhubekisela phambili, ngakho-ke isidingo sokuthuthuka okuhambelana nezintambo zokuphakelayo, ukugcizelela ukubaluleka kwabo okuyisisekelo ezweni lethu elixhumekile.
Isikhathi sePosi: Aug-04-2023