Phakathi kobuchwepheshe bokuxhumana obungenantambo, ubuhlobo kuphela phakathi kwedivayisi ye-transceiver engenantambo kanye ne-antenna yohlelo lwe-RFID obukhethekile kakhulu. Emndenini we-RFID, ama-antenna ne-RFID amalungu abaluleke ngokulinganayo. I-RFID nama-antenna ancikene futhi awahlukaniseki. Kungakhathaliseki ukuthi i-RFID reader noma i-RFID tag, kungakhathaliseki ukuthi ubuchwepheshe be-RFID obunemvamisa ephezulu noma ubuchwepheshe be-RFID obunemvamisa ephezulu, abuhlukaniseki ne-i-antenna.
I-RFIDi-antennaiyi-converter eguqula amaza aqondiswayo asakazeka emgqeni wokudlulisa abe amaza kagesi asakazeka endaweni engenamingcele (ngokuvamile isikhala esikhululekile), noma okuphambene nalokho. I-antenna iyisici semishini yomsakazo esetshenziselwa ukudlulisa noma ukwamukela amaza kagesi. Amandla okukhishwa kwesignali yemvamisa yomsakazo yi-transmitter yomsakazo athuthwa aye ku-antenna nge-feeder (ikhebula), futhi akhishwa yi-antenna ngesimo samaza kagesi. Ngemva kokuba igagasi le-electromagnetic lifike endaweni yokwamukela, lamukelwa yi-antenna (ingxenye encane kuphela yamandla etholwa) bese lithunyelwa kwi-receiver yomsakazo nge-feeder, njengoba kuboniswe esithombeni esingezansi.
Umgomo wokukhipha amagagasi kagesi avela kuma-antenna e-RFID
Uma ucingo luphethe ugesi oshintshanayo, luzokhipha amaza kagesi, futhi ikhono lalo lokukhipha imisebe lihlobene nobude kanye nokuma kocingo. Uma ibanga eliphakathi kwezintambo ezimbili liseduze kakhulu, insimu kagesi iboshwe phakathi kwezintambo ezimbili, ngakho-ke imisebe ibuthakathaka kakhulu; lapho izintambo ezimbili zisakazeke ngokwahlukana, insimu kagesi isakazeka endaweni ezungezile, ngakho-ke imisebe iyakhuliswa. Lapho ubude bocingo buncane kakhulu kunobude begagasi le-electromagnetic elikhishwe imisebe, imisebe ibuthakathaka kakhulu; lapho ubude bocingo bufana nobude begagasi le-electromagnetic elikhishwe imisebe, ugesi ocingweni uyanda kakhulu, wakhe imisebe enamandla. Ucingo oluqondile okukhulunywe ngalo ngenhla olungakhiqiza imisebe ebalulekile luvame ukubizwa ngokuthi i-oscillator, kanti i-oscillator iyi-antenna elula.
Uma ubude be-wave yamagagasi kagesi bude, kulapho ubukhulu be-antenna bukhulu khona. Uma kudingeka kukhishwe amandla amaningi, kulapho ubukhulu be-antenna bukhulu khona.
Isiqondiso se-antenna ye-RFID
Amagagasi kagesi akhishwa yi-antenna aqondisa ngqo. Ekugcineni kokudlulisa kwe-antenna, ukuqondisa kubhekisela ekhonweni le-antenna lokukhipha amagagasi kagesi ngendlela ethile. Ekugcineni kokwamukela, kusho ikhono le-antenna lokwamukela amagagasi kagesi avela eziqondisweni ezahlukene. Igrafu yomsebenzi phakathi kwezimpawu zokukhanya kwe-antenna kanye nezixhumanisi zendawo yiphethini ye-antenna. Ukuhlaziya iphethini ye-antenna kungahlaziya izici zokukhanya kwe-antenna, okungukuthi, ikhono le-antenna lokudlulisa (noma ukwamukela) amagagasi kagesi kuzo zonke izinkomba emkhathini. Ukuqondisa kwe-antenna kuvame ukumelelwa ngama-curve endizeni eqondile kanye nendiza evundlile emele amandla amagagasi kagesi akhishwa (noma amukelwe) ngezindlela ezahlukene.
Ngokwenza izinguquko ezihambisanayo esakhiweni sangaphakathi se-antenna, ukuqondiswa kwe-antenna kungashintshwa, ngaleyo ndlela kwakhiwe izinhlobo ezahlukene ze-antenna ezinezimpawu ezahlukene.
Inzuzo ye-antenna ye-RFID
Ukwanda kwe-antenna kuchaza ngokwezibalo izinga i-antenna ekhipha ngalo amandla okufaka ngendlela egxilile. Ngokombono wephethini, uma i-lobe eyinhloko inciphile, i-lobe eseceleni iba ncane, futhi inzuzo iba phezulu. Kobunjiniyela, inzuzo ye-antenna isetshenziselwa ukukala ikhono le-antenna lokuthumela nokwamukela amasignali ohlangothini oluthile. Ukwandisa inzuzo kungandisa ukumbozwa kwenethiwekhi ohlangothini oluthile, noma kwandise umkhawulo wokuzuza ngaphakathi kobubanzi obuthile. Ngaphansi kwezimo ezifanayo, lapho inzuzo iphakama, kulapho igagasi lomsakazo lisakazeka khona.
Ukuhlukaniswa kwama-antenna e-RFID
I-antenna ye-Dipole: Ibizwa nangokuthi i-antenna ye-dipole elinganayo, iqukethe izintambo ezimbili eziqondile ezinobukhulu obufanayo nobude obuhleliwe emgqeni oqondile. Isignali ifakwa kusuka ezindaweni ezimbili eziphakathi nendawo, futhi ukusatshalaliswa kwamanje okuthile kuzokhiqizwa ezingalweni ezimbili ze-dipole. Lokhu kusatshalaliswa kwamanje kuzovusa insimu kagesi esikhaleni esizungeze i-antenna.
I-antenna yekhoyili: Ingenye yama-antenna asetshenziswa kakhulu ezinhlelweni ze-RFID. Ngokuvamile enziwe ngezintambo eziboshwe zibe yizakhiwo eziyindilinga noma eziyisikwele ukuze zikwazi ukwamukela nokudlulisa izimpawu zikagesi.
I-antenna ye-RF ehlanganiswe ngendlela evuselelayo: I-antenna ye-RF ehlanganiswe ngendlela evuselelayo ivame ukusetshenziselwa ukuxhumana phakathi kwabafundi be-RFID namathegi e-RFID. Ahlangana ngensimu yamagnetic ehlanganyelwe. Lawa ma-antenna avame ukuba sesimweni esijikelezayo ukuze adale insimu yamagnetic ehlanganyelwe phakathi komfundi we-RFID kanye nethegi ye-RFID.
I-antenna ye-Microstrip patch: Ngokuvamile iyingqimba encane ye-patch yensimbi enamathiselwe endaweni ephansi. I-antenna ye-Microstrip patch ilula ngesisindo, incane ngosayizi, futhi incane ngesigaba. Inethiwekhi yokuphakelayo kanye neyokufaniswa ingakhiqizwa ngesikhathi esifanayo ne-antenna, futhi ihlobene eduze nohlelo lokuxhumana. Amasekethe aphrintiwe ahlanganiswa ndawonye, futhi ama-patch angakhiqizwa kusetshenziswa izinqubo ze-photolithography, ezingabizi kakhulu futhi ezilula ukuzikhiqiza ngobuningi.
I-antenna ye-Yagi: iyi-antenna eqondisa ngqo equkethe ama-dipole amabili noma ngaphezulu angamagagasi ayingxenye. Avame ukusetshenziselwa ukuthuthukisa amandla esignali noma ukuqhuba ukuxhumana okungenantambo okuqondisa ngqo.
I-antenna engemuva kwe-cavity: Iyi-antenna lapho i-antenna kanye ne-feeder kubekwa khona emgodini ofanayo wangemuva. Zivame ukusetshenziswa ezinhlelweni ze-RFID ezivame kakhulu futhi zinganikeza ikhwalithi yesignali enhle kanye nokuqina.
I-antenna eqondile ye-Microstrip: Iyi-antenna encane futhi encane, evame ukusetshenziswa kumadivayisi amancane njengamadivayisi eselula namathegi e-RFID. Yakhiwe ngemigqa ye-microstrip enikeza ukusebenza okuhle ngosayizi omncane.
I-Antenna Ejikelezayo: I-antenna ekwazi ukwamukela nokudlulisa amaza kagesi ajikelezileyo ahlukaniswe nge-polarized. Ngokuvamile enziwe ngocingo lwensimbi noma ishidi lensimbi futhi anesakhiwo esisodwa noma ngaphezulu esinomumo ojikelezayo.
Kunezinhlobo eziningi zama-antenna okusetshenziswa ezimweni ezahlukene njengemvamisa ehlukene, izinjongo ezahlukene, izikhathi ezahlukene, kanye nezidingo ezahlukene. Uhlobo ngalunye lwe-antenna lunezici zalo ezihlukile kanye nezimo ezifanele. Uma ukhetha i-antenna ye-RFID efanelekile, udinga ukukhetha ngokusekelwe ezidingweni zangempela zohlelo lokusebenza kanye nezimo zemvelo.
Ukuze ufunde kabanzi ngama-antenna, sicela uvakashele:
Ucingo: 0086-028-82695327
Isikhathi sokuthunyelwe: Meyi-15-2024
