RFID UHF antenna ngezigaba nokukhetha
I-antenna ye-RFID UHF iyingxenye ebaluleke kakhulu yemishini yehadiwe ekufundeni i-RFID, i-antenna ye-RFID UHF ehlukile ithinta ngqo ibanga nobubanzi bokufunda. Ama-antenna e-RFID UHF ayizinhlobo ezahlukahlukene, indlela yokukhetha i-antenna ye-RFID UHF efanele ngokuya ngamaphrojekthi ahlukene kubaluleke kakhulu.
Ngokusho izinto ezahlukene
Kukhona i-PCB RFID antenna, i-ceramic RFID antenna, i-aluminium plate antenna kanye ne-FPC antenna, njll. Into ngayinye inezinzuzo zayo kanye nobubi bayo futhi isetshenziswa ezimweni ezahlukene. Njenge-ceramic RFID antenna, inokusebenza okuzinzile nosayizi omncane. Siyazi ukuthi usayizi omncane kakhulu we-ceramic antenna ngu-18X18 mm, vele, kungenzeka kube nezincane. Kodwa i-ceramic antenna ayifanele ukwenziwa enkulu kakhulu, enkulu kunazo zonke emakethe i-RFID UHF antenna 5dbi, usayizi 100*100mm. Uma usayizi mkhulu uma kuqhathaniswa, kokubili ukukhiqiza nezindleko akuzuzisi njenge-PCB ne-antenna ye-aluminium. I-Antenna ye-UHF PCB iyi-antenna enkulu yokuthola futhi iyisinqumo sabantu abaningi. Ku-PCB RFID antenna, igobolondo lingafakwa ukuhlangabezana nokusetshenziswa kwangaphandle. Isici esikhulu kunazo zonke se-antenna ye-FPC iyavumelana nezimo, ifanele cishe yonke imikhiqizo emincane ye-elekthronikhi.
Umehluko phakathi kwama-antenna ayisiyingi ane-polarized kanye ne-linearly polarized
Ukuze uthole i-polarization yomugqa, lapho isiqondiso se-polarization ye-antenna eyamukelayo sihambisana nesiqondiso se-polarization (isiqondiso senkundla kagesi), isignali iyona engcono kakhulu (ukuqagela kwegagasi logesi ku-polarization kukhulu kakhulu). Ngokuphambene nalokho, njengoba isiqondiso se-polarization se-antenna etholayo sihluke kakhulu esiqondisweni somugqa we-polarization, isignali iba yincane (ukuqagela kuncipha ngokuqhubekayo). Lapho isiqondiso se-polarization ye-antenna eyamukelayo i-orthogonal ukuya endaweni ye-polarization eqondile (isiqondiso senkambu kazibuthe), isignali eyenziwe nguziro (i-projection inguziro). Indlela ye-polarization yomugqa inezidingo eziphakeme ekuqondeni kwe-antenna. Ama-antenna ane-polarized polarized awavamile ukusetshenziswa, ngokwesibonelo, izimpondo ezivivinyweni ze-microwave anechoic chamber kumele zibe izimpondo ezihlukanisiwe ngomugqa.
Kuma-antenna ane-polarized, isignali efakiwe iyafana kungakhathaliseki ukuthi i-polarization ibheke kuphi ithikithi elitholayo, futhi awukho umehluko (ukuqagela kwamagagasi kagesi kunoma iyiphi indlela kuyafana). Ngakho-ke, ukusetshenziswa kwe-polarization eyindilinga kwenza isistimu ingazweli kakhulu ekuqondeni kwe-antenna (lapha ukuqondiswa kuwukuqondiswa kwe-antenna, okuhlukile kokuma kwesistimu yokuqondisa okukhulunywe ngayo ekuqaleni). Ngakho-ke, ama-antenna ayisiyingi asetshenziswa ezimweni eziningi kumaphrojekthi we-IoT.
Umehluko phakathi kwe-arth-field antenna ye-RFID kanye nezinti ze-RFID ezikude
Njengoba igama lisho, i-nearfield RFID antenna iwuthi lokufunda ebangeni eliseduze. Imisebe yamandla igxile ebangeni elisondele kakhulu ngaphezu kwe-antenna, eqinisekisa umphumela wokufunda oseduze ngaphandle kokufunda kabi noma iyunithi yezinhlamvu efunda omaka be-RFID abazungezile. Izicelo zayo zihloselwe kakhulu amaphrojekthi adinga ukufundwa eduze ngaphandle kokufunda kabi omaka eduze kothi, njengokuphathwa kwezinto zobucwebe, ukuphathwa kwemishini yezokwelapha, indawo yokuhlala yezitolo ezinkulu ezingenamuntu, namakhabethe amathuluzi ahlakaniphile nokunye.
I-antenna ye-RFID ekude ine-engeli enkulu yemisebe yamandla kanye nebanga elide. Ngokukhula kwenzuzo nosayizi we-antenna, ibanga lemisebe nebanga lokufunda liyakhuphuka ngokufanele. Kuhlelo lokusebenza, zonke izimpondo zenkundla ekude ziyadingeka ukuze kufundwe kude, futhi isifundi esiphathwa ngesandla siphinde sisebenzise izimpondo ezikude. Isibonelo, ukuphathwa kwempahla ye-warehouse, ukulawula impahla yefekthri kanye ne-inventory yempahla, njll.