Ii-eriyali zonxibelelwano kunye nezixhobo, uzifumana njani ngcono kwaye udlulise imiqondiso ye-3g/4g yomqondiso ophinda-phindwayo weamplifier?

Umgaqo we-eriyali zonxibelelwano kunye nezixhobo,

indlela yokufumana ngcono kunye nokuhambisa imiqondiso ye-3g / 4g ye-amplifiers ephindaphinda umqondiso?

Iwebhusayithi:https://www.lintratek.com/

Okokuqala, umgaqo we-antenna:

1.1 Inkcazo ye-eriyali:
Isixhobo esinokusasaza ngokufanelekileyo amaza ombane ukuya kwicala elithile esithubeni okanye sifumane ngokufanelekileyo amaza ombane we-electromagnetic ukusuka kwicala elithile esithubeni.

1.2 Imisebenzi ye-eriyali:

Ø Uguqulo lwamandla - ukuguqulwa kwamaza akhokelwayo kunye namaza asimahla; Imitha ye-Directional (reception)- ine-directivity ethile.

1.3 Umgaqo wemitha ye-eriyali:

1.4 Iiparamitha ze-antenna

Ipharamitha yemitha

Ø Ububanzi bomqadi wesiqingatha samandla, umlinganiselo wangaphambili ukuya ngasemva;

Ø imo yepolarization, ucalucalulo oluxananazileyo;

Ø Into ethe ngqo, inzuzo ye-eriyali;

Ø Ilobe engundoqo, i-lobe yesibini, ukucinezelwa kwe-sidelobe, ukuzaliswa kweqanda, ukuthotywa komqadi…

Ipharamitha yesekethe

Umlinganiselo we-Voltage we-wave wave VSWR, i-reflection coefficient Γ, i-RL yokubuyisela ilahleko;

Ø I-impedance ye-Zin, ilahleko yokudluliselwa kwe-TL;

Ø ukubekwa wedwa Iso;

Ø Ulandelelwano lwesithathu lwe-Intermodulation PIM3...

I-Antenna ecaleni

Ububanzi beBeam obuthe tye

Umlinganiselo wangaphambili ukuya ngasemva: Ichaza umlinganiselo wamandla asasazeke phambili kwi-eriyali kunye namandla aphuma ngasemva angaphakathi kwi-±30°.

Ubudlelwane phakathi kwenzuzo kunye nobukhulu be-eriyali kunye nobude bemitha

Ukunciphisa "isondo", okukhona kugxininiswe umqondiso, ukuzuza okuphezulu, ubukhulu be-antenna bukhulu, kunye ne-beamwidth encinci;

Amanqaku ambalwa abalulekileyo okufumana i-antenna:

I-eriyali sisixhobo sokwenziwa kwaye ayikwazi ukuvelisa amandla. Ukuzuza kwe-antenna kukukwazi nje ukugxila amandla ngokufanelekileyo ukuze usasaze okanye ufumane amaza ombane kwicala elithile.

Ø Ukuzuza kwe-eriyali kuveliswa ngokunyuka kwe-vibrators. Okukhona iphezulu inzuzo, kokukhona ubude be-eriyali. Yandisa inzuzo nge-3dB kwaye uyiphindaphinde ivolumu.

Ukuphakama kwenzuzo ye-eriyali, ingcono i-directivity, ngakumbi amandla agxininise, kunye ne-lobe encinci.

1.5 IiParameters zeRadiation

I-Polarization: ibhekiselele kwindlela ehamba ngayo okanye ekutshintsheni i-vector yendawo yombane esithubeni.

1.6 Iiparamitha zeSekethe

Buyisela ilahleko

Ezimbini, iimveliso ze-eriyali

2.1 Indlela yokuthiywa kwe-Antenna:

Iindidi ze-eriyali:ODP(i-eriyali yepleyiti eyalathiswa yangaphandle),OOA(i-eriyali ye-omnidirectional yangaphandle),i-IXD(i-eriyali yesilingi yangaphakathi),i-OCS(i-eriyali ye-eriyali yangaphandle), i-OCA(i-eriyali yeqela langaphandle), i-OYI (i-eriyali ye-Yagi yangaphandle), i-ORA (ukuphosa ngaphandle I-eriyali yomphezulu), IWH(udonga lwangaphakathi olunyuswe i-eriyali) njalo njalo.

Isiqingatha samandla eengile :032,065,090,105,360(i-eriyali yesikhululo esisisiseko) 020,030,040,050,060,075,090,120,160,360 (i-eriyali ephindayo)

Imo yepolarization: R(i-polarization kabini), V(i-polarization enye)

Inzuzo: Ixabiso eliphezulu li-21dbi ngokusekelwe kwixabiso langempela

Iintlobo ezidityanisiweyo: D(intloko yeDin), N(N-uhlobo lwentloko), S(intloko ye-SMA), T(intloko ye-TNC) njalo njalo

Ibhendi yokuphindaphinda:

Ikhowudi yenkcazo: Iileta zaseRoma zibonisa ukuveliswa kwemveliso. Oonobumba kunye namanani alandelayo abonisa i-engile yediphu, imilo, kunye nolunye ulwazi. uhlobo F; V ulawulo lombane; Imodyuli ekude yombane yeRV

2.2 I-Antenna yesiKhululo esisisiseko

I-Antenna ye-Omnidirectional Dual-Frequency Antenna

I-Antenna ye-Three-Frequency

I-Antenna yesilingi

                                                                       I-Antenna efakwe eludongeni

Yagi Antenna

I-Antenna yegridi

I-Antenna ye-Broadband ye-Omnidirectional ye-Log-Periodic Antenna Plate

3.1 ISahluli saMandla

Isahluli samandla sisixhobo esahlula amandla esignali enye yemveliso ibe ziziphumo ezimbini okanye ngaphezulu. Ngokwenyani sisiguquli se-impedance.

Ø Ngaba isahluli samandla singatshintshwa ukuze sithathe indawo yomhlanganisi?

Xa isetyenziswe njenge-synthesizer, ayifuni kuphela ukuba yedwa okuphezulu, umlinganiselo ophantsi wamaza, kodwa igxininisa imfuneko yokumelana namandla aphezulu. Ithathela ingqalelo into yokuba izibuko eziphumayo zesiqhelo esisetyenziswayo esiqhekezayo samandla asihambelani, iliza elikhulu lokuma; Ngenxa yokunganyangeki kwamandla aphantsi kwe-microstrip power splitter, asikukhuthazi ukusebenzisa i-splitter yamandla ukubuyisela umhlanganisi.

I-Cavity Power Division

Isine, i-coupler intshayelelo

4.1 Umlingane

Ø I-Coupler luhlobo lwecandelo elisasaza amandla omqondiso wegalelo ngokusebenzisa intsimi yombane kunye nemagnethi yokudibanisa intsimi ukuze ibe yinxalenye yesiphumo sokudibanisa isiphelo, kunye nenye isiphumo sokuphela kwemveliso ukugqiba ukuhanjiswa kwamandla.

Ø Ukuhanjiswa kwamandla kwe-coupler akwahlulwa ngokulinganayo. Ikwabizwa ngokuba yisampula yamandla.

I-coupler yomkhombandlela

Ii-couplers ezihambelanayo ziqhele ukusetyenziswa kunye nesalathiso sokuhamba esichaziweyo seempawu ze-microwave zesampulu, eyona njongo iphambili kukwahlula kunye nokwahlula isiginali, okanye ngokuchaseneyo ukuxuba imiqondiso eyahlukeneyo, ngokungabikho komthwalo wangaphakathi, i-couplers eyalathiswayo ihlala iyinethiwekhi enezibuko ezine.

I-Cavity coupler

Iimpawu: Ukuthwala amandla aphezulu, ukusebenza kwelahleko ephantsi.

Isizathu:

1. I-cavity igcwele umoya, kwaye kwinkqubo yokuhanjiswa, ukuchithwa kweendaba ezibangelwa yi-air medium kuphantsi kakhulu.

2. Ibhanti yocingo oludityanisiweyo ngokuqhelekileyo lwenziwa ngumqhubi kunye ne-conductivity efanelekileyo yombane (njengesilivere yesilivere kwi-copper surface), kwaye ilahleko ye-conductor iyinto engafanelekanga.

3. Umthamo omkhulu wombhobho, ukutshatyalaliswa kobushushu okukhawulezayo. Ukumelana namandla aphezulu.

Umncedi

Ø I-attenuator yi-reciprocal element enezibuko ezimbini

Ezona zixhasi zixhaphakileyo zi-attenuators zokufunxa.

I-coaxial attenuator idla ngokusetyenziswa kubunjineli, equka i-“π” okanye “T” inethiwekhi yokuthomalalisa.

I-coaxial attenuators ihlala ineendidi ezimbini ze-fixed attenuators eziguquguqukayo.

Ø Izithinteli zisetyenziswa ikakhulu ukulawula amandla othumelo lwemiqondiso ye-microwave kwinkqubo yobhaqo kwaye isebenzise amandla agqithisileyo, ngaloo ndlela yandisa uluhlu oluguquguqukayo lomlinganiselo womqondiso, onje ngeemitha zamandla, abahlalutyi be-spectrum, i-amplifiers, abamkeli, njl.

Iwebhusayithi:https://www.lintratek.com/

#Isandisi 4g #Uphinda 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如功率计，频谱分析仪，放大器，接收器等。