ulwazi mayelana nezimpondo ze-TV

Isimiso sokusebenza kanye nomsebenzi

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Njengengxenye ebalulekile yokuxhumana okungenantambo, umsebenzi oyisisekelo we-antenna ukukhanyisa nokwamukela amaza omsakazo.Lapho udlulisela, i-high-frequency current iguqulwa ibe amaza kagesi;Ekwamukelweni, igagasi liguqulwa libe i-high frequency current.

Izinhlobonhlobo ze-antenna

Kunezinhlobo eziningi zezimpondo, futhi zingahlukaniswa ngezinhlobo ezilandelayo: I-Base Station Antenna kanye nezimpondo eziphathwayo eziphathwayo zokusetshenziswa okuhlukile zingahlukaniswa ngamagagasi amade, igagasi elide, igagasi eliphakathi, igagasi elifushane, igagasi elifushane kakhulu. kanye nezinti ze-microwave zamabhendi ahlukene wokusebenza.Ngokusho kokuqondisa kwayo, ingahlukaniswa ngama-omnidirectional kanye nezimpondo eziqondisayo.

Indlela yokukhetha i-Antenna

Njengengxenye ebalulekile yesistimu yokuxhumana, ukusebenza kwe-antenna kuthinta ngokuqondile inkomba yesistimu yokuxhumana.Umsebenzisi kufanele anake ukusebenza kwawo kuqala lapho ekhetha uthi.Ngokuqondile, kunezici ezimbili, ukukhetha kokuqala kohlobo lwe-antenna;Inketho yesibili ukusebenza kukagesi kwe-antenna.Ukubaluleka kokukhetha uhlobo lwe-antenna ukuthi: noma iphethini yothi olukhethiwe iyahlangabezana yini nezidingo zokumbozwa kwegagasi lomsakazo ekwakhiweni kwesistimu;Izidingo zokukhetha ukusebenza kukagesi kwe-antenna zimi kanje: Thola ukuthi izicaciso zikagesi ze-antenna, ezifana nomkhawulokudonsa wefrikhwensi, ukuzuza, namandla alinganiselwe, ziyahlangabezana yini nezidingo zedizayini yesistimu.Ngakho-ke, umsebenzisi kufanele axhumane nomkhiqizi kangcono lapho ekhetha uthi.

Ukuthola i-antenna

Inzuzo ingenye yezinkomba eziphambili ze-antenna.Iwumkhiqizo we-coefficient ye-directional kanye nokusebenza kahle, futhi iwukuvezwa kobukhulu bemisebe ye-antenna noma amagagasi atholiwe.Ukukhethwa kosayizi wenzuzo kuncike ezimfuneko zedizayini yesistimu yendawo yokumboza igagasi lomsakazo.Kalula nje, ngaphansi kwezimo ezifanayo, lapho inzuzo iphezulu, ibanga lokusabalala kwegagasi lomsakazo liba kude.Ngokuvamile, i-antenna yesiteshi esiyisisekelo ithatha i-antenna yenzuzo ephezulu, futhi i-antenna yesiteshi samaselula ithatha i-antenna yenzuzo ephansi.


Isikhathi sokuthumela: Aug-25-2022