Directional couplers ke likarolo tse tloaelehileng tsa microwave/millimeter wave methang ea microwave le lits'ebetso tse ling tsa microwave.Li ka sebelisoa bakeng sa ho itšehla thajana, karohano, le ho kopanya, joalo ka ho beha leihlo matla, botsitso ba matla a tsoang mohloling, ho itšehla thajana ha mohloli, tlhahlobo ea phetisetso le ho fiela khafetsa, joalo-joalo. ka li-reflectors tsa sejoale-joale tsa swept-frequency reflectometers.Hangata, ho na le mefuta e mengata, joalo ka waveguide, coaxial line, stripline, le microstrip.
Setšoantšo sa 1 ke setšoantšo sa moralo oa sebopeho.Haholo-holo e kenyelletsa likarolo tse peli, mohala o ka sehloohong le mohala o thusang, o kopantsoeng ka mefuta e fapaneng ea likoti tse nyane, likheo le likheo.Ka hona, karolo ea matla a tsoang ho "1" pheletsong ea mainline e tla kopanngoa le mohala oa bobeli.Ka lebaka la ho kena-kenana kapa ho phahama ha maqhubu, matla a tla fetisoa feela ka lehlakoreng la bobeli-le le leng (le bitsoang "pele"), 'me le leng ho na le hoo e ka bang ha ho na phetiso ea matla ka tatellano e le' ngoe (e bitsoang "reverse").
Setšoantšo sa 2 ke marang-rang a marang-rang, e 'ngoe ea likou tsa marang-rang e hokahane le mojaro o ts'oanang o hahelletsoeng.
Tšebeliso ea Directional Coupler
1, bakeng sa sistimi ea ho kopanya matla
3dB directional coupler (eo hangata e tsejoang ka hore ke borokho ba 3dB) hangata e sebelisoa ho multi-carrier frequency synthesis system, joalo ka ha ho bonts'itsoe setšoantšong se ka tlase.Mofuta ona oa potoloho o tloaelehile lits'ebetsong tse ajoang ka tlung.Kamora hore matšoao a f1 le f2 a tsoang ho liamplifiers tse peli a fete ka har'a 3dB directional coupler, tlhahiso ea mocha ka mong e na le likarolo tse peli tsa frequency f1 le f2, mme 3dB e fokotsa boholo ba karolo ka 'ngoe ea maqhubu.Haeba e 'ngoe ea li-terminals tsa tlhahiso e hokahane le mojaro o monyang, tlhahiso e 'ngoe e ka sebelisoa e le mohloli oa matla oa mokhoa oa ho metha oa intermodulation.Haeba o hloka ho ntlafatsa ho itšehla thajana ho ea pele, o ka eketsa likarolo tse kang li-filters le li-isolators.Ho itšehla thajana ha borokho bo entsoeng hantle ba 3dB ho ka ba ho feta 33dB.
The coupler directional e sebelisoa tsamaisong e kopanyang ea matla e le 'ngoe.
Sebaka sa khoho e le ts'ebeliso e 'ngoe ea ho kopanya matla se bontšitsoe setšoantšong (a) se ka tlase.Potolohong ena, ho sebelisoa ha tataiso ea coupler ka bohlale.Ho nka hore likhato tse kopanyang tsa li-couplers tse peli ka bobeli ke 10dB mme directivity ke 25dB, karohano lipakeng tsa f1 le f2 e qetella ke 45dB.Haeba lintlha tsa f1 le f2 ka bobeli li le 0dBm, tlhahiso e kopaneng ke -10dBm ka bobeli.Ha ho bapisoa le Wilkinson coupler setšoantšong (b) ka tlase (boleng ba eona bo tloaelehileng ba ho itšehla thajana ke 20dB), letšoao le tšoanang la ho kenya la OdBm, ka mor'a ho kopanya, ho na le -3dBm (ntle le ho nahana ka tahlehelo ea ho kenya).Ha re bapisoa le boemo ba li-inter-sample, re eketsa letšoao la ho kenya setšoantšong (a) ka 7dB e le hore tlhahiso ea eona e lumellane le palo (b).Ka nako ena, karohano lipakeng tsa f1 le f2 setšoantšong (a) "ea fokotseha" "Ke 38 dB.Sephetho sa papiso ea ho qetela ke hore mokhoa oa ho kopanya matla oa li-coupler o phahame ka 18dB ho feta coupler ea Wilkinson.Morero ona o loketse tekanyo ea intermodulation ea li-amplifiers tse leshome.
Mokhoa oa ho kopanya motlakase o sebelisoa tsamaisong ea ho kopanya matla 2
2, e sebelisetsoang tekanyo e khahlanong le tšitiso kapa tekanyo e fosahetseng
Sistimi ea tlhahlobo ea RF le litekanyo, potoloho e bontšitsoeng setšoantšong se ka tlase hangata e ka bonoa.Ha re re DUT (sesebediswa kapa thepa e tlasa teko) ke moamohedi.Boemong bo joalo, lets'oao le haufi la tšitiso ea kanale le ka kenngoa ho moamoheli ka pheletso e kopanyang ea coupler ea tataiso.Ebe tester e kopantsoeng e hokahantsoeng le bona ka coupler ea tataiso e ka leka khanyetso ea moamoheli - ts'ebetso ea tšitiso e sekete.Haeba DUT e le mohala oa cellular, transmitter ea fono e ka buloa ke sehlahlobi se felletseng se hoketsoeng pheletsong e hokelang ea coupler e lebileng.Ebe ho ka sebelisoa spectrum analyzer ho lekanya tlhahiso e fosahetseng ea fono ea ketsahalo.Ehlile, li-circuits tse ling li lokela ho eketsoa pele ho spectrum analyzer.Kaha mohlala ona o bua feela ka ts'ebeliso ea li-couplers tse tataisang, potoloho ea filthara e siiloe.
Coupulier e tataisang e sebelisetsoa tekanyo e thibelang tšitiso ea moamoheli kapa bophahamo bo fosahetseng ba mohala oa cellular.
Potolohong ena ea liteko, tataiso ea coupler ea tataiso e bohlokoa haholo.Mohlahlobi oa spectrum o hoketsoeng ho fihlela qetellong o batla feela ho amohela lets'oao ho tsoa ho DUT mme ha o batle ho amohela phasewete ho tloha pheletsong ea ho kopanya.
3, bakeng sa sampole ea matšoao le ho beha leihlo
Tekanyo ea li-transmitter inthaneteng le ho beha leihlo e kanna ea ba e 'ngoe ea lits'ebetso tse sebelisoang haholo tsa batho ba tsamaisanang le tataiso.Palo e latelang ke ts'ebeliso e tloaelehileng ea li-couplers tsa tataiso bakeng sa tekanyo ea liteishene tsa cellular.Ha re re matla a hlahisoang ke transmitter ke 43dBm (20W), ho kopanngoa ha coupler e lebileng.Matla ke 30dB, tahlehelo ea ho kenya (tahlehelo ea mohala hammoho le tahlehelo ea ho kopanya) ke 0.15dB.Qetello ea ho kopanya e na le lets'oao la 13dBm (20mW) le rometsoeng ho tester ea setsi sa setsi, tlhahiso e tobileng ea coupler ea tataiso ke 42.85dBm (19.3W), 'me ho lutla ke Matla a lehlakoreng le ka thōko a kenngoa ke mojaro.
The coupler directional e sebelisetsoa tekanyo ea setsi sa setsi.
Hoo e ka bang li-transmitter kaofela li sebelisa mokhoa ona bakeng sa lisampole le ho beha leihlo inthaneteng, mme mohlomong ke mokhoa ona feela o ka netefatsang tlhahlobo ea ts'ebetso ea transmitter tlasa maemo a tloaelehileng a ho sebetsa.Empa hoa lokela ho hlokomeloa hore ho tšoana le tlhahlobo ea transmitter, mme bahlahlobi ba fapaneng ba na le matšoenyeho a fapaneng.Ho nka mohlala oa liteishene tsa WCDMA, basebelisi ba tlameha ho ela hloko matšoao a sehlopha sa bona sa frequency ea ho sebetsa (2110 ~ 2170MHz), joalo ka boleng ba lets'oao, matla a in-channel, matla a kanale a haufi, joalo-joalo. Tlas'a mokhoa ona, bahlahisi ba tla kenya pheletso ea seteishene sa setsi A narrowband (joalo ka 2110 ~ 2170MHz) tataiso e tsamaisanang le maemo a ho sebetsa a transmitter le ho e romella setsing sa taolo ka nako efe kapa efe.
Haeba e le molaoli oa maqhubu a seea-le-moea-seteishene sa ho shebella seea-le-moea ho leka matšoao a liteishene tse bonolo, sepheo sa sona se fapane ka ho felletseng.Ho latela litlhoko tsa taolo ea seea-le-moea, lebelo la liteko le atolosetsoa ho 9kHz ~ 12.75GHz, mme seteishene se lekiloeng se pharaletse haholo.Ke mahlaseli a makae a bohata a tla hlahisoa sehlopheng sa maqhubu 'me a kena-kenana le ts'ebetso ea kamehla ea liteishene tse ling?Matšoenyeho a liteishene tsa radio monitoring.Ka nako ena, ho hlokahala hore ho be le khokahanyo ea tataiso e nang le bandwidth e ts'oanang bakeng sa sampole ea matšoao, empa "coupler" e ka koahelang 9kHz ~ 12.75GHz ha e bonahale e le teng.Rea tseba hore bolelele ba letsoho le kopantseng la coupler ea tataiso bo amana le maqhubu a setsi sa eona.Bandwidth ea ultra-wideband directional coupler e ka finyella lihlopha tsa 5-6 octave, tse kang 0.5-18GHz, empa sehlopha sa maqhubu se ka tlase ho 500MHz ha se khone ho koaheloa.
4, tekanyo ea matla ea inthaneteng
Ho thekenoloji ea ho lekanya matla ka mofuta oa motlakase, "coupleal" ke sesebelisoa sa bohlokoa haholo.Setšoantšo se latelang se bontša setšoantšo sa moralo oa mokhoa o tloaelehileng oa ho lekanya matla a phahameng.Matla a ho ea pele ho tsoa ho amplifier tlas'a Teko e nkuoa ke pheletso ea coupling e ka pele (terminal 3) ea "directional coupler" ebe e romeloa ho methareng ea matla.Matla a bonahatsoang a nkuoa ke theminale ea reverse coupling (terminal 4) ebe e romelloa methareng ea motlakase.
Tsela e tataisang e sebelisoa ho lekanya matla a phahameng.
Ka kopo elelloa: Ntle le ho amohela matla a bonts'itsoeng ho tsoa mojaro, terminal ea coupling e ka morao (terminal 4) e boetse e fumana matla a ho lutla ho tsoa tseleng e eang pele (terminal 1), e hlahisoang ke ho otloloha ha motho ea tsamaeang.Matla a bonahatsoang ke seo mohlahlobi a tšepang ho se lekanya, 'me matla a ho lutla ke mohloli o ka sehloohong oa liphoso tekanyong ea matla e bonts'itsoeng.Matla a bonts'itsoeng le matla a ho lutla a behiloe pheletsong e ka morao ea ho kopanya (lipheletso tse 4) ebe li romelloa ho metara ea matla.Kaha litsela tsa phetisetso ea matšoao a mabeli li fapane, ke superposition ea vector.Haeba matla a ho lutla ho meter ea motlakase a ka bapisoa le matla a bonts'itsoeng, a tla hlahisa phoso e kholo ea tekanyo.
Ha e le hantle, matla a bonahatsang ho tloha mojaro (qetellong ea 2) a tla boela a tsoe ho ea qetellong ea ho kopanya (qetello ea 1, e sa bontšoang setšoantšong se ka holimo).Leha ho le joalo, boholo ba eona ke bo fokolang ha bo bapisoa le matla a pele, a lekanyang matla a pele.Phoso e hlahang e ka hlokomolohuoa.
Beijing Rofea Optoelectronics Co., Ltd. e fumanehang "Silicon Valley" ea China - Beijing Zhongguancun, ke khoebo ea theknoloji e phahameng e ikemiselitseng ho sebeletsa litsi tsa lipatlisiso tsa malapeng le tsa kantle ho naha, litsi tsa lipatlisiso, liunivesithi le basebetsi ba likhoebo tsa lipatlisiso tsa mahlale.Khamphani ea rona e ikakhetse ka setotsoana lipatlisisong tse ikemetseng le nts'etsopele, moralo, tlhahiso, thekiso ea lihlahisoa tsa optoelectronic, 'me e fana ka litharollo tse ncha le lits'ebeletso tse ikhethileng bakeng sa bafuputsi ba mahlale le baenjiniere ba indasteri.Ka mor'a lilemo tse ngata tsa boipheliso bo ikemetseng, e thehile letoto le ruileng le le phethahetseng la lihlahisoa tsa photoelectric, tse sebelisoang haholo ho masepala, sesole, lipalangoang, matla a motlakase, lichelete, thuto, bongaka le liindasteri tse ling.
Re labalabela ho sebelisana le uena!
Nako ea poso: Apr-20-2023