RFID UHF anteenooyinka kala soocidda iyo xulashada

Anteenada RFID UHF waa qayb aad muhiim u ah qalabka hardware ee akhrinta RFID, anteenada RFID UHF ee kala duwan waxay si toos ah u saamaysaa fogaanta akhriska iyo kala duwanaanta. Anteenooyinka RFID UHF waa noocyo kala duwan, sida loo doorto anteenada RFID UHF saxda ah marka loo eego mashaariicda kala duwan ayaa aad muhiim u ah.

Sida laga soo xigtay qalab kala duwan

Waxaa jira anteeno PCB RFID, anteeno dhoobada RFID, anteenada saxan aluminium iyo anteenada FPC, iwm .. Wax kastaa waxay leedahay faa'iidooyin iyo faa'iido darrooyinkeeda waxaana loo isticmaalaa xaalado kala duwan. Sida anteenada RFID dhoobada, waxay leedahay waxqabad xasilloon iyo cabbir yar. Waxaan ognahay in cabbirka ugu yar ee anteenada dhoobada ay tahay 18X18 mm, dabcan, waxaa jiri kara kuwa yar yar. Laakiin anteenada dhoobada ah kuma habboona in la sameeyo mid aad u weyn, kan ugu weyn suuqa waa RFID UHF anteeno 5dbi, cabbirkiisu waa 100 * 100mm. Haddii cabbirku aad u weyn yahay, wax-soo-saarka iyo kharashka labaduba faa'iido uma aha sida anteenada PCB iyo aluminium. Anteenada UHF PCB waa anteeno faa'iido weyn leh waana doorashada dadka intooda badan. Anteenada PCB RFID, qolofka waxaa lagu rakibi karaa si loo daboolo isticmaalka dibadda. Dabeecadda ugu weyn ee anteenada FPC waa dabacsanaan, oo ku habboon ku dhawaad ​​dhammaan alaabta elektiroonigga ah ee yaryar.

Farqiga u dhexeeya anteenooyinkooda wareegta ah iyo kuwa toosan

Marka loo eego polarization linear, marka jihada polarization ee anteenada hesha ay la jaanqaado jihada polarization-ka toosan (jihada beerta korantada), calaamaduhu waa kan ugu fiican (saadaasha hirarka korantada ee jihada polarization waa tan ugu weyn). Taas lidkeeda, maadaama jihada polarization ee anteenada helaysa ay aad uga duwan tahay jihada polarization-ka toosan, calaamaduhu way yaraanayaan (saadaalku si joogto ah ayuu u yaraanayaa). Marka jihada polarization-ka ee anteenada hesha ay tahay mid toosan oo u socota jihada polarization-ka toosan (jihada goobta magnetic), calaamada la kiciyay waa eber ( saadaali waa eber). Habka polarization line ayaa leh shuruudo sare oo ku saabsan jihada anteenada. Anteenooyinka tooska ah ayaa dhif ah loo adeegsadaa, tusaale ahaan, anteenooyinka ku jira tijaabada qolka anchoic ee microwave waa inay ahaadaan anteenooyin toosan.

Anteenooyinka wareegta ah, signalka la kiciyay waa isku mid iyadoon loo eegin jihada polarization ee anteenada helaysa, mana jiro wax farqi ah (saadaasha hirarka korantada ee jiho kasta waa isku mid). Sidaa darteed, adeegsiga polarization-ka wareegtadu waxay ka dhigaysaa nidaamka mid aan xasaasi u ahayn jihaynta anteenada (halkan jihayntu waa jihaynta anteenada, taas oo ka duwan jihaynta nidaamka jihaynta ee hore loo sheegay). Sidaa darteed, anteenooyinku si wareeg ah ayaa loo adeegsadaa inta badan mashaariicda IoT.

Farqiga u dhexeeya anteenooyinka RFID-ga dhow iyo anteenooyinka RFID-ga fog

Sida magacaba ka muuqata, anteenada RFID-ga agteeda waa anteenada wax akhriska dhow. Shucaaca tamarta waxa uu ku urursan yahay xadka u dhow ee ka sarreeya anteenada, kaas oo hubinaya saamaynta wax akhriska ee u dhow iyada oo aan si khaldan loo akhriyin ama xadhig akhrin calaamadaha RFID ee ku hareeraysan. Codsigeeda waxaa inta badan loogu talagalay mashaariicda u baahan in la akhriyo meel u dhow iyada oo aan si khaldan loo akhriyin calaamadaha ku wareegsan anteenada, sida maareynta alaabada dahabka, maareynta qalabka caafimaadka, dejinta supermarket-ka aan cidi wadin, iyo armaajooyinka qalabka casriga ah iyo wixii la mid ah.

Anteenada RFID-ga fog waxay leedahay xagal shucaac tamareed oo weyn iyo masaafo dheer. Kordhinta faa'iidada iyo cabbirka anteenada, kala duwanaanshaha shucaaca iyo fogaanta akhrisku waxay u kordheysaa si waafaqsan. Codsiga, dhammaan anteenooyinka fog-fog ayaa looga baahan yahay akhriska fog, iyo akhristaha gacantu sidoo kale wuxuu isticmaalaa anteenooyin fog. Tusaale ahaan, maamulka saadka ee bakhaarka, xakamaynta alaabta warshadda iyo agabka hantida, iwm.