Kala soocidda anteenada RFID UHF iyo xulashada
Anteenada RFID UHFwaa qayb aad muhiim u ah qalabka qalabka ee akhrinta RFID, kala duwan Anteenada UHF RFID si toos ah ayay u saamaysaa masaafada akhriska iyo baaxadda. Anteenooyinka RFID UHF waa noocyo kala duwan, sida loo doorto anteenada RFID UHF ee saxda ah iyadoo loo eegayo mashaariicda kala duwan waa mid aad muhiim u ah.
Sida laga soo xigtay agabyo kala duwan
Waxaa jira Anteenada RFID ee PCB, Anteenada RFID dhoobada, anteenada saxanka aluminiumkaiyo anteenada FPC, iwm.. Maaddooyin kastaa waxay leeyihiin faa'iidooyin iyo khasaarooyin waxaana loo isticmaalaa xaalado kala duwan. Sida anteenada RFID ee dhoobada ah, waxay leedahay waxqabad deggan iyo cabbir yar. Waxaan ognahay in cabbirka ugu yar ee anteenada dhoobada ah uu yahay 18X18 mm, dabcan, waxaa jiri kara kuwa yaryar. Laakiin anteenada dhoobada ah kuma habboona in la sameeyo mid aad u weyn, kan ugu weyn suuqa waa anteenada RFID UHF 5dbi, cabbirka 100*100mm. Haddii cabbirku uu aad u weyn yahay, wax soo saarka iyo kharashkuba faa'iido ma leh sida anteenada PCB iyo aluminium. Anteenada UHF PCB waa anteeno faa'iido weyn leh waana doorashada dadka badankood. PCB RFID anteenada, qolofka waxaa lagu rakibi karaa si loogu daboolo isticmaalka bannaanka. Astaamaha ugu weyn ee anteenada FPC waa dabacsanaan, oo ku habboon ku dhawaad dhammaan alaabada elektaroonigga ah ee yaryar.
Farqiga u dhexeeya anteenooyinka wareegsan ee kala qaybsan iyo kuwa toosan ee kala qaybsan
Kala-goynta toosan, marka jihada kala-goynta ee anteenada qaabilaysa ay la jaanqaadayso jihada kala-goynta toosan (jihada goobta korontada), calaamaddu waa tan ugu fiican (saadaalinta hirarka elektromagnetic-ka ee jihada kala-goynta ayaa ah tan ugu weyn). Taas beddelkeeda, maadaama jihada kala-goynta ee anteenada qaabilaysa ay ka duwan tahay jihada kala-goynta toosan, calaamaddu way yaraataa (saadaalinta si joogto ah ayay u yaraataa). Marka jihada kala-goynta ee anteenada qaabilaysa ay u dhiganto jihada kala-goynta toosan (jihada goobta magnetic-ka), calaamadda la kiciyay waa eber (saadaalinta waa eber). Habka kala-goynta toosan wuxuu leeyahay shuruudo sare oo ku saabsan jihada anteenada. Anteenooyinka si toosan loo kala-goyn karo si dhif ah ayaa loo isticmaalaa, tusaale ahaan, anteenooyinka ku jira tijaabooyinka qolka anechoic ee microwave-ka waa inay ahaadaan anteenooyin si toosan loo kala-goyn karo.
Anteenooyinka wareegsan ee kala qaybsan, calaamadda la kiciyay waa isku mid iyadoon loo eegin jihada kala qaybsan ee anteenada helaysa, mana jirto wax farqi ah (saadaalinta hirarka elektromagnetic-ka ee jiho kasta waa isku mid). Sidaa darteed, isticmaalka kala qaybsanaan wareegsan ayaa ka dhigaysa nidaamku mid aan xasaasiyad ku lahayn jihada anteenada (halkan jihayntu waa jihada anteenada, taas oo ka duwan jihada nidaamka jihada ee hore loo soo sheegay). Sidaa darteed, anteenooyinka wareegsan ee kala qaybsan ayaa loo isticmaalaa xaaladaha badankood ee mashaariicda IoT.
Farqiga u dhexeeya anteenooyinka RFID ee u dhow garoonka iyo anteenooyinka RFID ee meelaha fog fog
Sida magacu tilmaamayo, Anteenada RFID ee u dhow garoonka waa anteeno loogu talagalay akhrinta fog. Shucaaca tamarta wuxuu ku urursan yahay meel u dhow anteenada oo ka sarreysa, taas oo hubinaysa saameynta akhrinta fog iyada oo aan si khaldan loo akhrin ama xarig loo akhrin calaamadaha RFID ee ku xeeran. Adeegsigeeda waxaa inta badan loogu talagalay mashaariicda u baahan in lagu akhriyo meel u dhow iyada oo aan si khaldan loo akhrin calaamadaha ku wareegsan anteenada, sida maaraynta kaydka dahabka, maaraynta qalabka caafimaadka, dejinta suuqyada waaweyn ee aan la saarnayn, iyo armaajooyinka qalabka casriga ah iwm.
Anteenada RFID ee goobta fog waxay leedahay xagal shucaac tamar oo weyn iyo masaafo dheer. Iyadoo ay kordhayso kororka iyo cabbirka anteenada, baaxadda shucaaca iyo masaafada akhriska ayaa si waafaqsan u kordheysa. Marka la adeegsanayo, dhammaan anteenooyinka goobta fog ayaa loo baahan yahay si loogu akhriyo meel fog, akhristaha gacanta ku hayana wuxuu sidoo kale isticmaalaa anteenooyinka goobta fog. Tusaale ahaan, maaraynta saadka bakhaarka, xakamaynta agabka warshadda iyo kaydka hantida, iwm.