Ukuhlukaniswa kwe-antenna ye-RFID UHF kanye nokukhetha
I-antenna ye-RFID UHFkuyingxenye ebaluleke kakhulu yemishini yehadiwe ekufundeni kwe-RFID, okuhlukile I-antenna ye-RFID UHF ithinta ngqo ibanga lokufunda kanye nobubanzi. Ama-antenna e-RFID UHF ayizinhlobo ezahlukene, indlela yokukhetha i-antenna ye-RFID UHF efanele ngokwemiklamo ehlukene ibaluleke kakhulu.
Ngokusho kwezinto ezahlukene
Bangu I-antenna ye-PCB RFID, i-antenna ye-RFID yobumba, i-antenna yepuleti le-aluminiumkanye ne-antenna ye-FPC, njll.. Into ngayinye inezinzuzo nezinkinga zayo futhi isetshenziswa ezimweni ezahlukene. Njenge-antenna ye-ceramic RFID, inokusebenza okuzinzile kanye nosayizi omncane. Siyazi ukuthi usayizi omncane kakhulu we-antenna ye-ceramic ungu-18X18 mm, vele, kungase kube nezincane. Kodwa i-antenna ye-ceramic ayifaneleki ukwenza enkulu kakhulu, enkulu kunazo zonke emakethe yi-RFID UHF antenna 5dbi, usayizi ongu-100*100mm. Uma usayizi mkhulu kakhulu, kokubili ukukhiqizwa kanye nezindleko akusizi ngalutho njenge-PCB kanye ne-antenna ye-aluminium. I-antenna ye-UHF PCB iyi-antenna enkulu yokuzuza futhi iyisinqumo sabantu abaningi. I-PCB Rfid i-antenna, igobolondo lingafakwa ukuze lihlangabezane nokusetshenziswa kwangaphandle. Isici esikhulu se-antenna ye-FPC siguquguquka, sifanele cishe yonke imikhiqizo emincane kagesi.
Umehluko phakathi kwama-antenna ahlukaniswe nge-circularly kanye nama-antenna ahlukaniswe nge-linearly
Ngokuphola okuqondile, lapho isiqondiso se-polarization se-antenna etholayo sihambisana nesiqondiso se-polarisation esiqondile (isiqondiso sensimu kagesi), isignali iyona engcono kakhulu (ukuvela kwegagasi le-electromagnetic ohlangothini lwe-polarisation kukhulu kakhulu). Ngokuphambene nalokho, njengoba isiqondiso se-polarisation se-antenna etholayo sihluke kakhulu esiqondisweni se-polarisation esiqondile, isignali iba ncane (ukuvela kwehla njalo). Lapho isiqondiso se-polarisation se-antenna etholayo sihambisana nesiqondiso se-polarisation esiqondile (isiqondiso sensimu yamagnetic), isignali ebangelwayo ingu-zero (ukuvela kungu-zero). Indlela ye-polarisation eqondile inezidingo eziphakeme esiqondisweni se-antenna. Ama-antenna aqondile awavamile ukusetshenziswa, isibonelo, ama-antenna ekuhlolweni kwegumbi le-microwave anechoic kumele abe ama-antenna aqondile.
Kuma-antenna ajikelezileyo ane-polarized, isignali ebangelwayo iyafana kungakhathaliseki ukuthi i-antenna etholayo iqondiswa kanjani, futhi akukho mehluko (ukuvela kwamagagasi kagesi kunoma yiluphi uhlangothi kuyafana). Ngakho-ke, ukusetshenziswa kwe-polarized eyindilinga kwenza uhlelo lungazweli kakhulu ekuqondisweni kwe-antenna (lapha ukuqondiswa kuwukuqondiswa kwe-antenna, okuhlukile ekuqondisweni kohlelo oluqondisayo okukhulunywe ngalo ngaphambili). Ngakho-ke, ama-antenna ajikelezileyo ane-polarized asetshenziswa ezimweni eziningi kumaphrojekthi e-IoT.
Umehluko phakathi kwe-antenna ye-RFID eseduze nensimu kanye ne-antenna ye-RFID ekude
Njengoba igama lisho, i-antenna ye-RFID eseduze iyi-antenna yokufunda okuseduze. Imisebe yamandla igxile ebangeni eliseduze kakhulu ngaphezu kwe-antenna, okuqinisekisa umphumela wokufunda okuseduze ngaphandle kokufunda kabi noma ukufunda amathegi e-RFID azungezile. Ukusetshenziswa kwayo kuhloselwe kakhulu amaphrojekthi adinga ukufundwa ebangeni eliseduze ngaphandle kokufunda kabi amathegi azungeze i-antenna, njengokuphathwa kwempahla yobucwebe, ukuphathwa kwemishini yezokwelapha, indawo yokuhlala yezitolo ezinkulu ezingenamuntu, kanye namakhabethe amathuluzi ahlakaniphile njalo njalo.
I-antenna ye-RFID yasensimini ekude ine-engeli enkulu yemisebe yamandla kanye nebanga elide. Ngokwanda kokwanda kwe-antenna nosayizi, ububanzi bemisebe kanye nebanga lokufunda kuyakhula ngokufanele. Ekusetshenzisweni, wonke ama-antenna asensimini ekude ayadingeka ukuze kufundwe kude, kanti umfundi ophathwa ngesandla usebenzisa nama-antenna asensimini ekude. Isibonelo, ukuphathwa kwempahla yokugcina impahla, ukulawulwa kwezinto zasefektri kanye nokufakwa kwempahla, njll.