Kumanethiwekhi okuxhumana esimanjemanje, I-Distributed Antenna Systems (DAS) isiphenduke isixazululo esibalulekile ku-opharetha ukubhekana nokumbozwa kwangaphakathi, ukukhushulwa kwamandla, kanye nokudluliswa kwesignali yamabhendi amaningi. Ukusebenza kwe-DAS akuncikile kuphela ezintini ngokwazo kodwa futhi kuthonywa kakhulu izingxenye ezihlukahlukene zokungenzi lutho ngaphakathi kwesistimu, ikakhulukazi izihlukanisi zamandla namabhangqa aqondisayo. Ukukhetha izingxenye ezifanele kunquma ngokuqondile ikhwalithi yokumboza isignali kanye nokusebenza kahle kwenethiwekhi iyonke.
I. Iqhaza Lezihlukanisi Zamandla ku-DAS
Izihlukanisi zamandla zisetshenziswa ngokuyinhloko ukusabalalisa amasiginali esisekelo ngokulinganayo kumachweba amaningi we-antenna angaphakathi, okuvumela ukumbozwa ezindaweni eziningi.
Ukucatshangelwa Okubalulekile Lapho Ukhetha I-Power Splitter:
Ukulahlekelwa Kokufaka
Ukulahlekelwa kokufaka okuphansi kuholela ekusebenzeni kahle kokudluliselwa kwesignali. Kumaphrojekthi amakhulu wokumbozwa kwasendlini, ama-opharetha ngokuvamile akhetha izihlukanisi zamandla alahleka kancane ukuze kuncishiswe ukumoshakala kwamandla.
Ukuhlukaniswa kwePort
Ukuhlukaniswa okuphezulu kunciphisa i-crosstalk phakathi kwamachweba, kuqinisekisa ukuzimela kwesignali phakathi kwama-antenna ahlukene.
Amandla Okuphatha
Ezimeni zokusetshenziswa kwamandla aphezulu (isb, i-DAS ezindaweni ezinkulu), kubalulekile ukukhetha izihlukanisi zamandla ezikwazi ukuphatha amandla okufaka aphezulu ukuze kuqinisekiswe ukusebenza okuzinzile kwesikhathi eside.
II. Ukusetshenziswa Kwezithandani ku-DAS
Izithandani zisetshenziselwa ukukhipha ingxenye yesiginali esiqwini esikhulu ukuze kuphakelwe izimpondo ezindaweni ezithile zasendlini, njengamaphasishi noma ukusabalalisa phansi.
Okucatshangwayo Okubalulekile Lapho Ukhetha Abashadile:
Ukuhlanganisa Inani
Amanani ajwayelekile okuhlanganisa ahlanganisa u-6 dB, 10 dB, kanye no-15 dB. Inani lokuhlanganisa lithinta amandla abelwe izinti. Ama-opharetha kufanele akhethe inani elifanele lokuhlanganisa ngokusekelwe ezidingweni zokumbozwa kanye nenani lezimpondo.
Ukuqondiswa kanye Nokuhlukaniswa
Ama-coupler anokuqondisa okuphezulu anciphisa ukubonakaliswa kwesignali, okuthuthukisa ukuzinza kwesixhumanisi esikhulu se-trunk.
Izici ze-PIM eziphansi
Kuzinhlelo ze-5G ne-multi-band DAS, ama-couplers aphansi e-Passive Intermodulation (PIM) abaluleke kakhulu ukugwema ukuphazamiseka kokuphazanyiswa nokuqinisekisa ikhwalithi yesignali.
III. Amasu Okukhetha Okusebenzayo Kwabasebenzi
Ekusetshenzisweni kobunjiniyela, opharetha ngokuvamile bacabangela izici ezilandelayo ukuze bakhethe ngokuphelele izihlukanisi zamandla namabhangqa:
Isilinganiso Sesimo Sendawo: Izakhiwo zamahhovisi amancane zingasebenzisa izihlukanisi zamandla ezinezindlela ezimbili noma ezi-3, kuyilapho izinkundla ezinkulu noma izikhumulo zezindiza zidinga inhlanganisela yezihlukanisi zamandla ezigaba eziningi namabhangqa ahlukahlukene.
Ukusekelwa Kwamabhendi Amaningi: I-DAS yesimanje kufanele isekele ububanzi befrikhwensi ukusuka ku-698–2700 MHz futhi inwebe iye ku-3800 MHz. Ama-opharetha adinga ukukhetha izingxenye ze-passive ezihambisana namabhendi efrikhwensi agcwele.
Ibhalansi Yesistimu: Ngokuhlanganisa ngokunengqondo izihlukanisi zamandla namabhangqani, ama-opharetha angaqinisekisa amandla esignali alinganiselayo kuzo zonke izindawo, ukugwema ukumboza izindawo eziyimpumputhe noma ukumbozwa ngokweqile.
I-Chengdu Concept Microwave Technology CO., Ltd ingumkhiqizi ochwepheshe weIzingxenye ze-Passive microwave kusistimu ye-DAS, kufaka phakathi isihlungi se-RF lowpass, isihlungi se-highpass, isihlungi se-bandpass, isihlungi se-notch/isihlungi sokumisa ibhande, i-duplexer, isihlukanisi samandla kanye ne-coupler eqondisayo. Zonke zingenziwa ngezifiso ngokuya ngezidingo zakho.
Siyakwamukela kuwebhu yethu:www.concept-mw.comnoma sifinyelele ku:sales@concept-mw.com
Isikhathi sokuthumela: Sep-16-2025