Pakati peasina waya yekutaurirana matekinoroji, chete hukama pakati peiyo isina waya transceiver mudziyo uye antenna yeRFID system ndiyo inonyanya kukosha. Mumhuri yeRFID, antennas neRFID inhengo dzakakosha zvakaenzana. RFID uye antennas zvinoenderana uye hazviparadzaniswe. Ingave iri RFID muverengi kana RFID tag, ingave yakakwirira-frequency RFID tekinoroji kana Ultra-yakakwirira-frequency RFID tekinoroji, haiparadzaniswe kubvaantenna.
Iye RFIDantennaishanduro inoshandura masaisai anotungamirirwa achipararira pamutsara wekutumira kuita masaisai emagetsi anopararira munzvimbo isina kuganhurwa (kazhinji nzvimbo yemahara), kana zvinopesana. Antenna chikamu chemidziyo yeredhiyo inoshandiswa kufambisa kana kugamuchira mafungu emagetsi. Iyo redhiyo frequency chiratidzo chemagetsi inobuda neredhiyo transmitter inotakurwa ichiendeswa kune antenna kuburikidza neyekudyisa (tambo), uye inovhenekerwa neantenna muchimiro chemagetsi emagetsi. Mushure mekunge magetsi emagetsi asvika panzvimbo inogashira, inotambirwa neantenna (chikamu chidiki chete chesimba chinogamuchirwa) uye inotumirwa kumudhigirii weredhiyo kuburikidza nekudyisa, sezvakaratidzwa mumufananidzo uri pazasi.
Iyo musimboti wekupenya emagetsi mafungu kubva kuRFID antennas
Kana waya ikatakura alternating current, inovheneka masaisai emagetsi, uye kugona kwayo kwemwaranzi kune hukama nehurefu nechimiro chewaya. Kana nzvimbo iri pakati petambo mbiri iri pedyo zvikuru, munda wemagetsi unosungwa pakati petambo mbiri, saka mwaranzi haina simba; apo mawaya maviri akapararira akaparadzana, munda wemagetsi unopararira munzvimbo yakapoteredza, saka mwaranzi inowedzerwa. Kana kureba kwewaya kuri kudiki zvakanyanya pane wavelength yeradiated electromagnetic wave, mwaranzi haina kusimba; kana kureba kwewaya kuchifananidzwa newavelength yeradiated electromagnetic wave, ikozvino pawaya inowedzera zvakanyanya, ichigadzira mwaranzi yakasimba. Iyo yataurwa pamusoro waya yakatwasuka iyo inogona kuburitsa yakakosha radiation inowanzonzi oscillator, uye oscillator iri nyore antenna.
Kurebesa kwewavelength yemafungu emagetsi, ndiko kukura saizi yeantenna. Iyo yakawanda simba inoda kuvhenekerwa, iyo yakakura saizi yeantenna.
RFID antenna directivity
Iwo emagetsi mafungu anovhenekerwa neantenna anotungamira. Pakupera kwekutumira kweantenna, iyo yakananga inoreva kugona kweantenna kupenya mafungu emagetsi mune imwe nzira. Kumagumo ekugamuchira, zvinoreva kugona kweantenna kugamuchira mafungu emagetsi kubva kwakasiyana nzira. Iyo girafu yebasa pakati peiyo antenna radiation maitiro uye spatial coordinates ndiyo antenna pateni. Kuongorora iyo antenna pateni kunogona kuongorora maitiro emwaranzi yeantenna, ndiko kuti, kugona kweantenna kufambisa (kana kugamuchira) masaisai emagetsi munzvimbo dzese muchadenga. Kutungamira kweantenna kunowanzo kumiririrwa nemacurves pandege yakamira uye ndege yakachinjika inomiririra simba remagetsi emagetsi anopenya (kana kugamuchirwa) munzira dzakasiyana.
Nekuita shanduko dzinoenderana kune chimiro chemukati cheantenna, iyo yakanangana neiyo antenna inogona kushandurwa, nekudaro ichigadzira akasiyana marudzi eantenna ane akasiyana maitiro.
RFID antenna kuwana
Antenna kuwana muhuwandu inotsanangura dhigirii iro antenna inopenya simba rekuisa nenzira yakadzikama. Kubva pakuona kwemuenzaniso, iyo yakamanikana iyo huru lobe, iyo diki yedivi lobe, uye yakakwirira kuwana. Muinjiniya, kuwana kweantenna kunoshandiswa kuyera kugona kweantenna kutumira uye kugamuchira masaini munzira yakati. Kuwedzera bhenefiti kunogona kuwedzera kufukidzwa kwetiweki mune imwe nzira, kana kuwedzera iyo yekuwana margin mukati meimwe siyana. Mumamiriro ezvinhu mamwe chetewo, kuwedzera kwemhindu, ndiko kureba kunoita masaisai eredhiyo achipararira.
Kurongwa kweRFID antennas
Dipole antenna: Inodaidzwawo kuti symmetrical dipole antenna, ine waya mbiri dzakatwasuka dzehupamhi hwakafanana nehurefu hwakarongwa mumutsara wakatwasuka. Chiratidzo chinodyiswa mukati kubva kumagumo maviri ari pakati, uye kumwe kugovera kwazvino kunogadzirwa pamaoko maviri e dipole. Uku kugovera kwazvino kunofadza munda wemagetsi munzvimbo yakatenderedza antenna.
Coil antenna: Ndiyo imwe yeantenna anonyanya kushandiswa muRFID masisitimu. Iwo anowanzo gadzirwa newaya akakuvadzwa kuita denderedzwa kana rectangular zvimiro kuti vagone kugamuchira uye kutumira masaini emagetsi.
Inductively yakasanganiswa RF antenna: Inductively yakabatana RF antenna inowanzo shandiswa kutaurirana pakati peRFID vaverengi uye RFID tag. Vanoroorana kuburikidza nemagnetic field inogoverana. Aya antennas anowanzo mune inotenderera chimiro kugadzira yakagovaniswa magineti pakati peRFID muverengi uye RFID tag.
Microstrip patch antenna: Kazhinji kacho chidimbu chesimbi chigamba chakasungirirwa pasi. Microstrip patch antenna ine uremu huremu, idiki muhukuru, uye yakatetepa muchikamu. Iyo yekudyisa uye inofananidzira network inogona kugadzirwa panguva imwe chete neantenna, uye yakanyatso hukama nehurongwa hwekutaurirana. Maseketi akadhindwa akabatanidzwa pamwe chete, uye zvigamba zvinogona kugadzirwa uchishandisa photolithography maitiro, ayo anodhura-anodhura uye ari nyore kugadzira kuwanda.
Yagi antenna: inotungamira antenna ine maviri kana anopfuura hafu-wave dipoles. Iwo anowanzo shandiswa kusimudzira simba rechiratidzo kana kuitisa inotungamira isina waya kutaurirana.
Cavity-backed antenna: Iyo antenna umo antenna uye feeder inoiswa mune imwechete yekumashure mhango. Iwo anowanzo shandiswa mune yakakwira-frequency RFID masisitimu uye anogona kupa yakanaka chiratidzo chemhando uye kugadzikana.
Microstrip linear antenna: Iyo miniaturized uye nhete antenna, inowanzo shandiswa mumidziyo midiki senge nharembozha uye RFID tag. Iwo anovakwa kubva kuMicrostrip mitsetse inopa kuita kwakanaka muhukuru hudiki.
Spiral Antenna: Antenna inokwanisa kugamuchira uye kutumira circularly polarized electromagnetic waves. Anowanzo gadzirwa nesimbi waya kana sheet simbi uye ane imwe kana kupfuura spiral-shaped zvimiro.
Kune akawanda marudzi emaantenna ekushandiswa mumamiriro akasiyana senge ma frequency akasiyana, zvinangwa zvakasiyana, zviitiko zvakasiyana, uye zvakasiyana zvinodiwa. Imwe neimwe mhando yeantenna ine yakasarudzika maitiro uye anoshanda mamiriro. Paunenge uchisarudza yakakodzera RFID antenna, iwe unofanirwa kusarudza zvichienderana nezvinodiwa chaizvo zvekushandisa uye mamiriro ekunze.
Kuti udzidze zvakawanda nezve antennas, ndapota shanya:
Phone:0086-028-82695327
Nguva yekutumira: May-15-2024
