Isimiso sama-antenna nezinsiza zokuxhumana,
indlela yokwamukela nokudlulisa kangcono amasignali ama-amplifiers okuphindaphinda amasignali angu-3g/4g？
Iwebhusayithi:https://www.lintratek.com/
Okokuqala, isimiso se-antenna:
1.1 Incazelo ye-antenna:
Idivayisi engakhipha amaza kagesi ngendlela ephumelelayo iye ohlangothini oluthile esikhaleni noma engathola amaza kagesi ngendlela ephumelelayo evela ohlangothini oluthile esikhaleni.
1.2 Imisebenzi ye-Antenna:
Ø Ukuguqulwa kwamandla – ukuguqulwa kwegagasi eliqondisiwe kanye negagasi lesikhala esikhululekile; Imisebe eqondisayo (ukwamukela)- inokuqondisa okuthile.
1.3 Isimiso semisebe ye-Antenna:
1.4 Amapharamitha e-Antenna
Ipharamitha yemisebe
Ø Ububanzi bebhamu yamandla obuyisigamu, isilinganiso sangaphambili kuya emuva;
Ø imodi yokuhlukanisa, ukuhlukaniswa kokuhlukana okuphambene;
Ø Isici sokuqondisa, inzuzo ye-antenna;
Ø I-lobe eyinhloko, i-lobe yesibili, ukucindezelwa kwe-sidelobe, ukugcwaliswa okungu-zero, ukuthambekela phansi kwe-beam…
Ipharamitha yesekethe
Isilinganiso samagagasi amile e-voltage i-VSWR, i-coefficient yokubonisa i-Γ, ukulahlekelwa kokubuya kwe-RL;
Ø Impedance yokufaka i-Zin, ukulahleka kokudluliselwa kwe-TL;
Ø ukuhlukaniswa kwe-Iso;
Ø I-Intermodulation ye-oda lesithathu engasebenzi PIM3…
I-Antenna sidelobe
Ububanzi Bomsebe Ovundlile
Isilinganiso sangaphambili kuya emuva: Sichaza isilinganiso samandla akhishwa imisebe phambili ku-antenna kanye namandla akhishwa imisebe emuva ngaphakathi kuka-±30°.
Ubudlelwano phakathi kokuzuza kanye nosayizi we-antenna kanye nobubanzi be-beamwidth
Ukunciphisa “ithayi”, lapho isignali iqina kakhulu, kulapho inzuzo iphakama khona, ubukhulu be-antenna buyanda, futhi ububanzi be-beadwidth buncipha;
Amaphuzu ambalwa abalulekile okuzuza kwe-antenna:
I-antenna iyithuluzi elingasebenzi futhi alikwazi ukukhiqiza amandla. Ukuzuza kwe-antenna kumane kuyikhono lokugxila ngempumelelo amandla ukuze kukhishwe noma kwamukelwe amaza kagesi ngendlela ethile.
Ø Ukwanda kwe-antenna kukhiqizwa yi-superposition yama-vibrator. Uma ukwanda kwe-antenna kuphakeme, ubude be-antenna buya bube bude. Khulisa ukwanda nge-3dB bese uphinda kabili ivolumu.
Uma i-antenna ikhula kakhulu, isiqondiso siba ngcono, amandla aqinile kakhulu, futhi i-lobe incane.
1.5 Amapharamitha Okushisa Imisebe
I-Polarization: ibhekisela endleleni noma ekushintsheni kwevektha yensimu kagesi emkhathini.
1.6 Amapharamitha Esekethe
Ukulahlekelwa yimbuyiselo
Okwesibili, imikhiqizo ye-antenna
2.1 Indlela Yokuqamba I-Antenna:
Izigaba ze-Antenna: I-ODP (i-antenna yepuleti eqondisa ngaphandle), i-OOA (i-antenna yangaphandle eqondisa yonke indawo), i-IXD (i-antenna yophahla lwangaphakathi), i-OCS (i-antenna yangaphandle eqondisa kabili), i-OCA (i-antenna yeqembu langaphandle), i-OYI (i-antenna yangaphandle ye-Yagi), i-ORA (i-antenna yangaphandle ephonsa ubuso), i-IWH (i-antenna egibele odongeni lwangaphakathi) njalo njalo.
I-engela yamandla ayingxenye: 032,065,090,105,360 (i-antenna yesiteshi esiyisisekelo) 020,030,040,050,060,075,090,120,160,360 (i-antenna ephindaphindayo)
Imodi yokuphola: R(ukuphola okubili), V(ukuphola okukodwa)
Inzuzo: Inani eliphezulu lingu-21dbi ngokusekelwe enanini langempela
Izinhlobo zamajoyinti: D (ikhanda le-Din), N (ikhanda lohlobo lwe-N), S (ikhanda le-SMA), T (ikhanda le-TNC) njalo njalo
Ibhendi yemvamisa:
Ikhodi yokucacisa: Izinhlamvu zesiRoma zibonisa ukukhiqizwa komkhiqizo. Izinhlamvu ezilandelayo nezinombolo zibonisa i-dip Angle, ukuma, nolunye ulwazi. Uhlobo lwe-F; Ukulawulwa kukagesi kwe-V; Ukuguqulwa kukagesi okukude kwe-RV
2.2 I-Antena Yesiteshi Esiyisisekelo
I-Antena Eqondisa Konke I-Antena Ephindaphindwayo Ephindwe Kabili
I-Antenna Enemvamisa Emithathu
I-Antena Yophahla
I-Antenna Egibele Odongeni
I-Antenna ye-Yagi
I-Antenna yegridi
I-Broadband Omnidirectional Antenna Log-Periodic Antenna Plate Antenna
3.1 Isihlukanisi Samandla
Isihlukanisi samandla yidivayisi ehlukanisa amandla esignali eyodwa yokukhipha ibe yimiphumela emibili noma ngaphezulu. Empeleni iyisiguquli se-impedance.
Ø Ingabe isihlukanisi samandla singaguqulwa ukuze kufakwe esinye isihlanganisi?
Uma isetshenziswa njenge-synthesizer, ayidingi nje kuphela ukuhlukaniswa okuphezulu, isilinganiso samagagasi aphansi okuma, kodwa futhi igxila esidingweni sokumelana namandla aphezulu. Uma sibheka ukuthi ama-port okukhiphayo e-cavity power splitter asetshenziswa kakhulu awafani, igagasi elikhulu lokuma; Ngenxa yokumelana kwamandla aphansi kwe-microstrip power splitter, asincomi ukusebenzisa i-power splitter ukuze kuthathelwe indawo i-combiner.
Isihlukanisi Samandla Se-Cavity
Okwesine, isingeniso se-coupler
4.1 Isixhumi
Ø I-Coupler uhlobo lwesakhi esisabalalisa amandla esignali yokufaka ngokusebenzisa insimu kagesi kanye ne-magnetic field coupling ukuze ibe yingxenye yomphumela wokuphela kokuxhuma, kanye nokunye okusele komphumela wokuphela kokukhipha ukuqedela ukusatshalaliswa kwamandla.
Ø Ukusatshalaliswa kwamandla kwesixhumi akuhlukaniswa ngokulinganayo. Kwaziwa nangokuthi i-power sampler.
Isixhumi esiqondisayo
Ama-couplers aqondisayo avame ukusetshenziswa nesiqondiso sokugeleza esibekiwe sezimpawu ze-microwave ukuze kuthathwe isampula, inhloso eyinhloko ukuhlukanisa nokuhlukanisa isignali, noma ngokuphambene nalokho ukuxuba izimpawu ezahlukene, uma kungekho umthwalo wangaphakathi, ama-couplers aqondisayo avame ukuba inethiwekhi enamachweba amane.
Isixhumi se-Cavity
Izici: Ukuthwala amandla aphezulu, ukusebenza okuphansi kokulahlekelwa.
Isizathu:
1. Umgodi ugcwele umoya, futhi enqubweni yokudlulisa, ukusabalala kwemidiya okubangelwa yi-air medium kuphansi kakhulu.
2. Ibhande lentambo elihlanganisiwe ngokuvamile lenziwe ngomqhubi onekhono elihle lokuqhuba ugesi (njengokumbozwa kwesiliva ebusweni bethusi), futhi ukulahlekelwa komqhubi akunakwa.
3. Umthamo omkhulu womgodi, ukushabalalisa ukushisa okusheshayo. Ukumelana namandla aphezulu.
I-Attenuator
Ø I-attenuator iyisici esiphindwe kabili esihambisanayo
Ama-attenuator asetshenziswa kakhulu ama-absorption antagonists.
I-attenuator ye-coaxial ivame ukusetshenziswa kwezobunjiniyela, equkethe inethiwekhi yokunciphisa i-“π” noma “T”.
Ama-attenuator e-Coaxial ngokuvamile anezinhlobo ezimbili zama-attenuator angaguquki kanye nama-variable.
Ø Ama-Attenuator asetshenziswa kakhulu ukulawula amandla okudlulisa amasignali e-microwave ohlelweni lokuthola futhi asebenzise amandla amaningi, ngaleyo ndlela andise ububanzi obuguquguqukayo bokulinganisa amasignali, njengamamitha wamandla, abahlaziyi be-spectrum, ama-amplifier, ama-receiver, njll.
Iwebhusayithi:https://www.lintratek.com/
#I-Amplifier 4g #Isiphindaphindi esingu-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衰减器主要用于检测系统中控制微波信号传输能量、消耗超额能量，因而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。
Isikhathi sokuthunyelwe: Jan-18-2024