Antɛni fɛɛrɛ jumɛnw bɛ kɛ arajo frequence Identification (RFID) la?

Antɛni fɛɛrɛ jumɛnw bɛ kɛ arajo frequence Identification (RFID) la?

 

Sanw kɔnɔna na, an ye dɛsɛko kɛmɛ caman ɲɛnabɔ, wa, tan o tan, kɔnɔntɔn ɲɔgɔn bɛ tali kɛ antɛni gɛlɛyaw la sanni ka bɔ puwɛntiw tiɲɛni na. A fɔ man di nka, kiliyan fanba bɛ dɔgɔkun caman kɛ ka puwɛnti kunnafonidilanw suma ɲɔgɔn na k’a sɔrɔ antɛni dilanni bɛ ban tile kelen walima tile fila kɔnɔ.

RFID bɛ sɛgɛsɛgɛli kɛ frequency band naani kan. Antɛni fiziki danfaralen don u ni ɲɔgɔn cɛ fo ka 125 kHz bobine ni 900 MHz dipole suma, o bɛ i n’a fɔ ka transformateur suma ni telewisɔn ka telewisɔn sankanso ye.

 

 

Ni frequency (fɔkan) dɔgɔyara ani ni frequency (fɔkan) ka bon-125 kHz ani 13.56 MHz-taama bɛ sigi kalanden antɛni ka foro kɛrɛfɛ. Fanga bɛ wuli ni magnetic flux linkage ye bobine fila ni ɲɔgɔn cɛ, o ni transformateur (transformateur) baara cogo bɛ tali kɛ ɲɔgɔn na. O la a ka c'a la an t'a Weele ko "antenne" hali dɔɔnin-"coil" walima "inductor" ka ca. LF bobinew bɛ fiɲɛ bila nɛgɛbere la ka ferite berew lamini. Ferite ye seramiki ye min ka magnɛti bɛ se ka don a la kosɛbɛ min bɛ flux (flux) lajɛ ka kɛ hakɛ fitinin ye. Ni 13,56 MHz ye, bobine fanba ye spiral fla ye minnu sɛbɛnnen don PCB walima PET filimu kan-an ka izini kɔnɔ, sariya ye 0,07mm kuran papiye janya ye.

Dan min bɛ Kɛ bandi fla bɛɛ la, o bɛ Se ka Kɛ mɛtɛrɛ kelen ye kalan hakɛ la cogoya ɲumanw na. A ka c’a la, a ka dɔgɔn.

 

Ni i sera 860-960 MHz ma dɔrɔn, tulon bɛ Changé pewu. O jikuruw janya bɛ Dɔgɔya fo antɛni min bonya bɛ Se ka Kɛ, o bɛ Se ka kuran-fiɲɛw Bɔ tiɲɛ na ka Taa yɔrɔ jan na. Dipoles, meander-lines, patches-real antenne structures ni radiation patterns ani impedance jogo minnu nafa ka bon.

 

Dipole tilancɛ-wave min bɛ 915 MHz la, o bɛ boli santimɛtɛrɛ 16 ɲɔgɔn na a kuncɛ ni a kuncɛ la. Meander-line designs bɛ o janya da ka taa ɲɛfɛ ka taa ɲɛfɛ walasa a ka don label fitinin dɔ kan. I bɛ bandwidth jago ka kɛɲɛ ni compactness ye. Kungolodimi min ka bon, o ye impedance matching ye. UHF RFID pucew bɛ impedance complexe jira ni yɔrɔ lakika ye 20Ω lamini na ani capacitive reactance a ka c’a la -150 ni -220Ω cɛ ka kɛɲɛ ni puce model ye. Antɛni ka kan ka konjugu di. Simulation software bɛ o ɲɛnabɔ sisan nka ka bɛnkan dafalen sɔrɔ fɛn dilanni muɲuli bɛɛ kɔnɔ, o bɛ iterasiyɔn ta.

 

Ni i ye taamasiyɛn dɔ nɔrɔ nɛgɛdaga kan dɔrɔn, baarakɛcogo bɛ jigin kosɛbɛ-n’a sɔrɔla nin ye ko kelen ye min ka ca kosɛbɛ UHF porozɛw kɔnɔ. Patch antennes ni ground planes bɛ baara kɛ o lamini na nka u bɛ musaka ni bonya fara u kan.

 

Micro-onde minnu bɛ 2,45 GHz ani sanfɛ, olu bɛ yen RFID kama nka a bɛ dan sigi a tali la jatebɔ kɔkan ani waati lakika-waati sigiyɔrɔma siratigɛw la.

Fɛn dilanni ɲɔgɔndɛmɛ bɛ baarakɛyɔrɔw ni foro dɛsɛw fara ɲɔgɔn kan. Bobine winding tension bɛ nɔ bila inductance la. Etching chimie bɛ nɔ bila trace geometry la. Écran imprimerie variables bɛ nɔ bila sheet resistance la. Chip bonding jogo bɛ nɔ bila ɲɛnamaya kuntaalajan-la. Ninnu si tɛ jira kunnafonidilan dɔ kan.

Ni aw bɛ frequency sugandi, aw bɛ fizik ni gɛlɛya in bɛn ɲɔgɔn ma. LF bɛ don farikolo yɔrɔw la ka baara kɛ nɛgɛ kɛrɛfɛ-baganw dɔnni bɛ boli a kan kun ɲuman na. HF bɛ NFC ni wari sarali baarakɛminɛnw ɲɛnabɔ. UHF bɛ yɔrɔ ni teliya di fɛnw marali ni fɛnw ladonni ma nka a bɛ a ɲini ka jateminɛ kɛ sigida koɲɛw la.

 

 

Datasheet range specifications bɛ miiri laboratuwari cogoya ɲumanw-tag facing reader, free space, no interference. Porozɛ bolodacogo lakika kama, i k’a daminɛ k’o hakɛ tigɛ tilayɔrɔ fila la, o kɔfɛ, 20% wɛrɛ ka to a sanfɛ. Fɛn o fɛn bɛ sanfɛ, o bɛɛ bɔra an ye min kalan an ka taamasiyɛn ni kalanbaga dilanni boli la Jingzhou san tan ni segin tɛmɛnenw kɔnɔ-aw kana siga ka aw bolo da n’aw b’a fɛ ka baro kɛ fɛn kɛrɛnkɛrɛnnenw kan.