Umgaqo wee-antenna zonxibelelwano kunye nezixhobo,
indlela yokufumana nokudlulisa ngcono imiqondiso ye-3g/4g signal repeater amplifiers？
Iwebhusayithi:https://www.lintratek.com/
Okokuqala, umgaqo we-antenna:
1.1 Inkcazo ye-antenna:
Isixhobo esinokukhupha amaza e-electromagnetic ngendlela ephumelelayo ukuya kwicala elithile esibhakabhakeni okanye esinokufumana amaza e-electromagnetic ngendlela ephumelelayo ukusuka kwicala elithile esibhakabhakeni.
1.2 Imisebenzi ye-antenna:
Ø Ukuguqulwa kwamandla – ukuguqulwa kwamaza akhokelwayo kunye namaza esithuba esikhululekileyo; Imitha yerediyo (ukwamkela)- inolwalathiso oluthile.
1.3 Umgaqo wemitha ye-antenna:
1.4 Iiparameter ze-Antena
Ipharamitha yemitha
Ø Ububanzi besiqingatha somqadi wamandla, umlinganiselo wangaphambili nowangasemva;
Ø imo ye-polarisation, ucalucalulo lwe-cross polarization;
Ø I-Directivity factor, inzuzo ye-antenna;
Ø I-lobe ephambili, i-lobe yesibini, ukucinezelwa kwe-sidelobe, ukuzaliswa kwe-zero, ukuhla kwe-beam…
Ipharamitha yesekethe
Umlinganiselo wamaza omileyo we-voltage VSWR, i-reflection coefficient Γ, i-return loss RL;
Ø I-impedance yokufaka i-Zin, ilahleko yokudluliselwa kwe-TL;
Ø ukuhlukaniswa kwe-Iso;
Ø I-Intermodulation ye-PAM3 engasebenziyo…
I-antenna esecaleni
Ububanzi beBeam ethe tye
Umlinganiselo wangaphambili nongasemva: Uchaza umlinganiselo wamandla ajikelezisiweyo ngaphambili kwi-antenna kunye namandla ajikelezisiweyo ngasemva ngaphakathi kwe-±30°.
Ubudlelwane phakathi kokufumana kunye nobukhulu be-antenna kunye nobubanzi be-beamwidth
Ukuyithambisa “itayara”, kokukhona isignali ixinene ngakumbi, kokukhona i-gain iphezulu, ubukhulu be-antenna bukhulu, kwaye ububanzi be-beadwidth bunciphile;
Amanqaku ambalwa abalulekileyo okuzuza i-antenna:
I-antenna sisixhobo esingasebenziyo kwaye asinakuvelisa amandla. Ukuzuza kwe-antenna kukukwazi nje ukugxininisa amandla ngempumelelo ukuze akhuphe okanye afumane amaza e-electromagnetic kwicala elithile.
Ø Ukwanda kwe-antenna kuveliswa kukubekwa phezulu kwee-vibrators. Okukhona ukwanda kwe-antenna, kokukhona ubude bayo bude. Yandisa ukwanda nge-3dB kwaye uphindaphinde ivolumu.
Okukhona i-antenna ikhula, kokukhona i-directivity ingcono, kokukhona amandla eqina ngakumbi, kwaye kokukhona i-lobe inciphile.
1.5 Iiparameter zeMisebe
I-Polarization: ibhekisa kwindlela okanye utshintsho lwevektha yentsimi yombane esithubeni.
Iiparameter zeSekethe eziyi-1.6
Ukulahleka kokubuyisela
Ezimbini, iimveliso ze-antenna
2.1 Indlela Yokubiza I-Antena:
Iindidi zee-antenna: i-ODP (i-antenna yepleyiti yangaphandle), i-OOA (i-antenna yangaphandle yonke), i-IXD (i-antenna yesilingi yangaphakathi), i-OCS (i-antenna yangaphandle emibini), i-OCA (i-antenna yeqela langaphandle), i-OYI (i-antenna yangaphandle yeYagi), i-ORA (i-antenna yangaphandle yokuphosa), i-IWH (i-antenna efakwe eludongeni yangaphakathi) njalo njalo.
Isiqingatha samandla e-Angle: 032,065,090,105,360 (i-antenna yesitishi sesiseko) 020,030,040,050,060,075,090,120,160,360 (i-antenna ephindayo)
Imo yokuphola: R(ukuphola kabini), V(ukuphola okukodwa)
Inzuzo: Ixabiso eliphezulu yi-21dbi ngokusekelwe kwixabiso langempela
Iintlobo ezidibeneyo: D (intloko ye-Din), N (intloko yohlobo lwe-N), S (intloko ye-SMA), T (intloko ye-TNC) njalo njalo
Ibhendi yefrikhwensi:
Ikhowudi yeenkcukacha: Oonobumba bamaRoma babonisa ukuveliswa kwemveliso. Oonobumba namanani alandelayo abonisa i-dip Angle, imo, kunye nolunye ulwazi. Uhlobo lwe-F; Ulawulo lombane lwe-V; I-RV remote electric modulation
2.2 I-Antena yeSitishi seSiseko
I-Antena Eneenkcukacha Ezimbini I-Antena Ephindaphindwayo
I-Antenna ye-Frequency ezintathu
I-Antena yophahla
I-Antenna efakwe eludongeni
I-Antenna yeYagi
I-Antena yeGrid
I-Broadband Omnidirectional Antenna Log-Periodic Antenna Plate Antenna
3.1 Isihluli samandla
Isihluzi-mandla sisixhobo esahlula amandla esignali enye yokuphuma ibe ziziphumo ezimbini okanye ngaphezulu. Ngokusisiseko sisiguquli se-impedance.
Ø Ngaba isahluli-mandla singatshintshwa ukuze kuthathelwe indawo isihlanganisi?
Xa isetyenziswa njenge-synthesizer, ayifuni nje kuphela umlinganiselo ophezulu wokuzihlukanisa, kodwa ikwagxila kwimfuneko yokumelana namandla aphezulu. Xa ucinga ukuba ii-output ports ze-cavity power splitter ezisetyenziswa rhoqo azifani, amaza amakhulu amileyo; Ngenxa yokumelana kwamandla aphantsi kwe-microstrip power splitter, asicebisi ukusebenzisa i-power splitter ukutshintsha i-combiner.
Isihluzi samandla oMngxunya
Isine, intshayelelo ye-coupler
4.1 Isihlanganisi
Ø I-Coupler luhlobo lwecandelo elisasaza amandla esignali yokufaka ngokusebenzisa intsimi yombane kunye ne-magnetic field coupling ukuze ibe yinxalenye yesiphumo sokugqibela se-coupling, kwaye yonke enye imveliso yokuphela kwesiphumo igqibezele usasazo lwamandla.
Ø Ukusasazwa kwamandla kwesixhumi akwahlulwanga ngokulinganayo. Kwaziwa nangokuthi yi-power sampler.
Isixhumi esikhokelayo
Ii-couplers eziqondisayo zisetyenziswa rhoqo kunye ne-directional flow direction echaziweyo ye-microwave signals ukuze kuthathwe iisampulu, injongo ephambili kukwahlula nokwahlula i-signal, okanye ukuxuba i-signal ezahlukeneyo, xa kungekho mthwalo wangaphakathi, ii-directional couplers zihlala zinethiwekhi yee-port ezine.
Umdibanisi womngxuma
Iimpawu: Ukuthwala amandla aphezulu, ukusebenza okuphantsi kokulahleka.
Isizathu:
1. Umngxuma uzaliswe ngumoya, kwaye kwinkqubo yokusasazwa, ukusasazwa kweendaba okubangelwa yi-air medium kuphantsi kakhulu.
2. Ibhanti yentambo edibeneyo ngokuqhelekileyo yenziwe nge-conductor enombane oqhuba kakuhle (njengokugqunywa kwesilivere kumphezulu wobhedu), kwaye ilahleko ye-conductor ayinamsebenzi.
3. Umthamo omkhulu womngxuma, ubushushu obucothayo. Ukumelana namandla aphezulu.
I-Attenuator
Ø I-attenuator yinto enamachweba amabini alinganayo
Ezona zinto zisetyenziswa kakhulu ekuthinteleni ukufunxwa kwesikhumba zii-attenuators zokufunxa.
I-coaxial attenuator idla ngokusetyenziswa kubunjineli, equka inethiwekhi yokunciphisa i-“π” okanye “T”.
Ii-attenuators ze-Coaxial zihlala zineentlobo ezimbini zee-attenuators ezizinzileyo neziguquguqukayo.
Ø Ii-Attenuators zisetyenziswa kakhulu ukulawula amandla okudlulisa iimpawu ze-microwave kwinkqubo yokufumanisa kwaye zisebenzise amandla agqithisileyo, ngaloo ndlela zandisa uluhlu oluguquguqukayo lokulinganisa iimpawu, ezifana neemitha zamandla, ii-spectrum analyzers, ii-amplifier, ii-receivers, njl.
Iwebhusayithi:https://www.lintratek.com/
#Isandisi-lizwi 4g #Isiphindi se-4g
衰减器
Ø衰减器是二端口互易元件
Ø衰减器最常用的是吸收式衰减器.
Ø工程中通常使用的是同轴型衰减器，由“π”型或“T”型衰减网络组成.
Ø同轴衰减器通常有固定及可变衰减两种.
Ø扩展信号测量的动态范围，诸如功率计，频谱分析仪，放大器，接收器等.
Ixesha leposi: Jan-18-2024