Molao-motheo oa li-antenna tsa puisano le lisebelisoa,
mokhoa oa ho amohela le ho fetisa matšoao hamolemo bakeng sa li-amplifiers tsa 3g/4g?
Webosaete:https://www.lintratek.com/
Taba ea pele, molao-motheo oa antenna:
1.1 Tlhaloso ea antenna:
Sesebelisoa se ka khantšang maqhubu a motlakase hantle sebakeng se itseng kapa se ka amohelang maqhubu a motlakase ka nepo ho tsoa sebakeng se itseng.
1.2 Mesebetsi ea Antenna:
Ø Phetoho ea matla - phetoho ea leqhubu le tataisoang le leqhubu la sebaka sa mahala; Directional radiation (kamohelo) - e na le tataiso e itseng.
1.3 Molao-motheo oa mahlaseli a antenna:
1.4 Mekhahlelo ea Antenna
Parameter ea mahlaseli
Ø Bophahamo ba halofo ea matla a matla, karo-karolelano ea pele ho ea morao;
Ø mokhoa oa polarization, khethollo ea polarization;
Ø Ntlha ea Directivity, phaello ea li-antenna;
Ø Lobe e ka sehloohong, lobe ea bobeli, khatello ea sidelobe, ho tlatsoa ha zero, ho theoleloa ha maballo ...
Potoloho parameter
Voltage stand wave ratio VSWR, reflection coefficient Γ, return loss RL;
Ø Inpud impedance Zin, tahlehelo ea phetisetso TL;
Ø ho itšehla thajana Iso;
Ø Odara ea boraro e sa sebetseng ea Intermodulation PIM3…
Letlapa la antenna
Ho Horizontal Beam Bophara
Karo-karolelano ea ka pele ho ea morao: E hlalosa karo-karolelano ea matla a mahlaseli a ka pele ho antenna le matla a tsoang ka morao ka har'a ± 30 °.
Kamano lipakeng tsa phaello le boholo ba li-antenna le bophahamo ba khanya
Ho batalatsa "thaere", ha lets'oao le tsepamisitse maikutlo haholoanyane, phaello e phahame, boholo ba li-antenna e kholoanyane, 'me bophara ba khanya bo fokotseha;
Lintlha tse 'maloa tsa bohlokoa tsa ho fumana li-antenna:
Lenakana ke sesebelisoa sa ho etsa lintho feela 'me ha se khone ho hlahisa matla. Phaello ea li-antenna ke bokhoni ba ho tsepamisa matla ka nepo ho khantša kapa ho amohela maqhubu a motlakase ka nqa e itseng.
Ø Phaello ea antenna e hlahisoa ke superposition ea li-vibrators. Ha phaello e phahame, bolelele ba antenna bo bolelele. Eketsa phaello ka 3dB mme u imenne habeli.
Ha phaello ea li-antenna e phahame, e ntlafala haholoanyane, matla a tsepamisitsoeng haholoanyane, le lobe e fokolang.
1.5 Radiation Parameters
Polarization: e bolela tsela kapa phetoho ea vector ea tšimo ea motlakase sebakeng.
1.6 Li-Parameters tsa Potoloho
Khutlisetsa tahlehelo
Ea bobeli, lihlahisoa tsa li-antenna
2.1 Mokhoa oa ho reha Antenna:
Likarolo tsa manakana:ODP(lenaka la ka ntle la poleiti),OOA(lenaka la ka ntle la omnidirectional),IXD(lenakana la siling la ka tlung),OCS(lenaka la ka ntle la bidirectional), OCA(lenaka la ka ntle la sehlopha), OYI(lenaka la Yagi la kantle), ORA(ho lahlela kantle antenna ea holim'a metsi), IWH(lebota la ka tlung le kentsoeng antenna) joalo-joalo.
Half power angle :032,065,090,105,360(antenna ea setsi sa motheo) 020,030,040,050,060,075,090,120,160,360
Polarization mode: R(dual polarization), V (polarization e le 'ngoe)
Fumana: Theko e phahameng ke 21dbi ho latela boleng ba 'nete
Mefuta e kopaneng: D (Hlooho ea Din), N (Hlooho ea mofuta oa N), S (hlooho ea SMA), T (hlooho ea TNC) joalo-joalo.
Frequency band:
Khoutu ea lintlha: Litlhaku tsa Seroma li bonts'a tlhahiso ea sehlahisoa. Litlhaku le linomoro tse latelang li bontša Angle ea ho qoelisa, sebopeho, le lintlha tse ling. Mofuta oa F; V taolo ea motlakase; RV e hole ea modulation ea motlakase
2.2 Antenna ea Base Station
Omnidirectional Antenna Dual-Frequency Antenna
Antenna ea Maqhubu a Mararo
Antenna ea siling
Antenna e Khōlō ea Lerako
Yagi Antenna
Grid Antenna
Broadband Omnidirectional Antenna Log-Periodic Antenna Plate Antenna
3.1 Mohloli oa Matla
Power divider ke sesebelisoa se arolang matla a lets'oao le le leng la tlhahiso ka liphetho tse peli kapa ho feta. Ha e le hantle ke converter ea impedance.
Ø Na searola matla se ka khutlisoa ho nkela mokopanyi sebaka?
Ha e sebelisoa e le synthesizer, ha e hloke feela ho itšehla thajana ho phahameng, karo-karolelano ea maqhubu a tlaase, empa hape e lebisa tlhokomelo ho tlhokahalo ea ho mamella matla a phahameng. Ha ho nahanoa hore likou tse hlahisoang ke sekhahla sa motlakase se sebelisoang hangata ha li lumellane, leqhubu le leholo le emeng; Ka lebaka la ho hanyetsa matla a fokolang a motlakase oa motlakase oa microstrip, ha re khothaletse ho sebelisa sesepa sa matla ho nkela motsoako.
Cavity Power Divider
Tse 'nè, selelekela sa banyalani
4.1 Banyalani
Ø Coupler ke mofuta oa motsoako o tsamaisang matla a lets'oao la ho kenya ka lebala la motlakase le khokahanyo ea matla a khoheli hore e be karolo ea phepelo ea coupling, le karolo e setseng ea tlhahiso ho phethela kabo ea matla.
Ø Kabo ea matla ea banyalani ha e arohane ka ho lekana. E boetse e tsejoa e le mohlala oa matla.
Directional coupler
Li-couplers tsa Directional hangata li sebelisoa ka tataiso ea phallo e boletsoeng ea matšoao a microwave bakeng sa sampole, sepheo sa mantlha ke ho arola le ho arola lets'oao, kapa ka lehlakoreng le leng ho kopanya mats'oao a fapaneng, ha ho se na mojaro o ka hare, li-couplers tse tataisang hangata ke marang-rang a mane.
Cavity coupler
Likarolo: Ho jara matla a phahameng, ts'ebetso ea tahlehelo e tlase.
Lebaka:
1. Sekoti se tletse moea, 'me ts'ebetsong ea phetisetso, ho senyeha ha mecha ea litaba ho bakoang ke moea oa moea ho tlaase haholo.
2. Lebanta la terata le kopantsoeng ka kakaretso le entsoe ka conductor e nang le motlakase o motle oa motlakase (joaloka silevera ea tšepe holim'a koporo), 'me tahlehelo ea conductor ha e le hantle ha e na thuso.
3. Molumo o moholo oa sekoti, ho senya mocheso ka potlako. Mamella matla a phahameng.
Attenuator
Ø Attenuator ke karolo e 'meli ea li-port reciprocal element
Li-attenuators tse sebelisoang haholo ke li-attenuators.
Coaxial attenuator hangata e sebelisoa boenjiniere, e nang le "π" kapa "T" attenuation network.
Li-attenuators tsa coaxial hangata li na le mefuta e 'meli ea li-attenuators tse tsitsitseng le tse fapaneng.
Ø Li-Attenuators li sebelisoa haholo ho laola matla a phetisetso ea mats'oao a microwave mocheng oa ho lemoha le ho sebelisa matla a feteletseng, ka hona, li holisa mefuta e fapaneng ea litekanyo tsa mats'oao, joalo ka limithara tsa motlakase, li-spectrum analyzers, amplifiers, receiver, jj.
Webosaete:https://www.lintratek.com/
# Amplifier 4g #Pheta 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.
Nako ea poso: Jan-18-2024