Kumanethiwekhi okuxhumana anamuhla, i-Distributed Antenna Systems (DAS) isibe yisisombululo esibalulekile kubasebenzi ukubhekana nokumbozwa kwangaphakathi, ukuthuthukiswa komthamo, kanye nokudluliswa kwesignali yamabhendi amaningi. Ukusebenza kwe-DAS akuxhomeki kuphela kuma-antenna ngokwawo kodwa futhi kuthonywa kakhulu yizingxenye ezahlukahlukene ezingasebenzi ngaphakathi kohlelo, ikakhulukazi ama-power splitter kanye nama-directional couplers. Ukukhetha izingxenye ezifanele kunquma ngqo ikhwalithi yokumbozwa kwesignali kanye nokusebenza kahle kwenethiwekhi iyonke.
I. Indima Yabahlukanisi Bamandla ku-DAS
Izihlukanisi zamandla zisetshenziswa kakhulu ukusabalalisa ngokulinganayo izimpawu zesiteshi sesisekelo kumachweba amaningi e-antenna angaphakathi, okuvumela ukumbozwa ezindaweni eziningi.
Izinto Ezibalulekile Okufanele Uzicabangele Lapho Ukhetha Ama-Power Splitter:
Ukulahlekelwa Kokufakwa
Ukulahlekelwa okuphansi kokufakwa kuholela ekusebenzeni kahle kokudlulisa isignali okuphezulu. Emaphrojekthini amakhulu okumboza ngaphakathi, abaqhubi bavame ukukhetha izihlukanisi zamandla ezilahlekelwa kancane ukuze banciphise ukuchithwa kwamandla.
Ukuhlukaniswa Kwechweba
Ukuhlukaniswa okuphezulu kunciphisa ukuxoxa phakathi kwamachweba, okuqinisekisa ukuzimela kwesignali phakathi kwama-antenna ahlukene.
Amandla Okuphatha Amandla
Ezimweni zokusetshenziswa kwamandla aphezulu (isb., i-DAS ezindaweni ezinkulu), kubalulekile ukukhetha izihlukanisi zamandla ezikwazi ukuphatha amandla aphezulu okufaka ukuqinisekisa ukusebenza okuzinzile kwesikhathi eside.
II. Ukusetshenziswa Kwabaxhumanisi ku-DAS
Ama-couplers asetshenziselwa ukukhipha ingxenye yesignali kusuka esiqwini esikhulu ukuze ondle ama-antenna ezindaweni ezithile zangaphakathi, njengemihubhe noma ukusatshalaliswa kwephansi.
Izinto Ezibalulekile Okufanele Uzicabangele Lapho Ukhetha Abashadikazi:
Inani Lokuhlanganisa
Amanani avamile okuhlanganisa afaka phakathi i-6 dB, i-10 dB, kanye ne-15 dB. Inani lokuhlanganisa lithinta amandla anikezwe ama-antenna. Abaqhubi kufanele bakhethe inani lokuhlanganisa elifanele ngokusekelwe ezidingweni zokumboza kanye nenani lama-antenna.
Ukuqondisa kanye Nokuzihlukanisa
Ama-couplers aqondisa kakhulu anciphisa ukubonakaliswa kwesignali, okuthuthukisa ukuzinza kwesixhumanisi esikhulu sesiqu.
Izici ze-PIM eziphansi
Kuzinhlelo ze-5G kanye ne-multi-band DAS, ama-couplers aphansi e-Passive Intermodulation (PIM) abaluleke kakhulu ukugwema ukuphazamiseka kwe-intermodulation nokuqinisekisa ikhwalithi yesiginali.
III. Amasu Okukhetha Asebenzayo Kwabasebenzi
Ekusetshenzisweni kobunjiniyela, opharetha bavame ukucabangela izici ezilandelayo ukuze bakhethe ngokuphelele izihlukanisi zamandla nama-couplers:
Isikali Sesimo Sokumbozwa: Izakhiwo ezincane zamahhovisi zingasebenzisa izihlukanisi zamandla ezinezindlela ezimbili noma ezintathu, kuyilapho izinkundla zemidlalo ezinkulu noma izikhumulo zezindiza zidinga inhlanganisela yezihlukanisi zamandla ezinezigaba eziningi kanye nezihlanganisi ezahlukene.
Ukusekelwa Kwamabhendi Amaningi: I-DAS yesimanje kumele isekele amabanga emvamisa kusukela ku-698–2700 MHz futhi ifinyelele ngisho naku-3800 MHz. Abasebenzi kudingeka bakhethe izingxenye ezingasebenzi ezihambisana namabhendi emvamisa agcwele.
Ibhalansi Yesistimu: Ngokuhlanganisa ngokunengqondo izihlukanisi zamandla nama-couplers, opharetha bangaqinisekisa amandla esignali alinganayo kuzo zonke izindawo, bagweme izindawo ezingaboni kahle noma ukumbozwa ngokweqile.
I-Chengdu Concept Microwave Technology CO.,Ltd ingumkhiqizi ochwepheshe we-Izingxenye ze-microwave ezingasebenzi kohlelo lwe-DAS, kufaka phakathi isihlungi se-RF lowpass, isihlungi se-highpass, isihlungi se-bandpass, isihlungi se-notch/i-band stop, i-duplexer, i-Power divider kanye ne-directional coupler. Zonke zingenziwa ngokwezifiso ngokwezidingo zakho.
Siyakwamukela kuwebhu yethu:www.concept-mw.comnoma usithinte ku:sales@concept-mw.com
Isikhathi sokuthunyelwe: Septhemba 16-2025