Nammay takkoh qanxix Omni afkanal RFID anteenah margaqa Lojistik inxastarih

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Awayih uddur, raadiyô qaynat (RFID) elle geytimam, banki, taraafik karditte, w.w.w., baxaabaxsale ayyuntiinoh exxaaxil kaxxa hangi hirigak geytima. Toh tonnal anuk, baaxoh addal elle qaddosen innal "Interneet caagiida" strategic industry caddo fan, RFID lowsis kee magaalah addal geytimta lowsis kampaanitteh addal kaxxa hangi yaceenim faxximta. RFID assabalta gexsit lowsis kee riig edde anuk kargo kattat lowsis gexsitit, sissikuk oyti gaaboyna, riig xiinissoh assabalta, marsoosah assabalta, postah parsaal, espress gufne, w.w. taniimi. ceelalloh, mango kusaq yekkeh RFID Anteenat duqaysimak booxal axcih feerayso-wag baxxaqsa. Lojistik inxastarih addat, RFID assabalta baxsa le RFID assabalta mamaxxagal. Tah faxximtaah, xer waktih addat kee baxaabaxsale afkanitteh addat tan astooti tatrussaanam kee geytam faxximta, tamah logistics industry addal geytimta antenna inkih tan tropism akah takkennah faxximta. Toh tonnal anuk, lowsis sissinaaneh sissinaaneh addat tan sissinaane kee sissinaaneh sissinaane kaxxam qimmoh addah takkem duude waytaamih taagah, tet anteenah polarization afkan cirfat polarization takkem duude waytam bictah. Tah faxximtam RFID antenna namma-polarized antenna akah takkennah abaanam faxximtaah, tohih taagah Faxe afkan elle geytimam, RFID tag boardih signal geytimam xiqah.

1 margaqa maroytah tan anteenah namma maaqiddi ximmooma luk

Awayih uddur, circular patch antenna wagsiisak fokkaaqo elle takkem, miniaturized kinnim kee nammay haytoh addah polarization fokkaaqo elle takkem faxximta. anteena maroh tan patch nammay takkoh maaqiddi ximmooma maroyta patch namma-polarized abtaama.

1.1 acassaale namma maaqiddi ximmok digga le patch anteenah

maroytah yan anteena nammay takke maaqiddi ximmooma namma exxal kurrumta: maaqiddi exxaa kee maroyti exxa. maaqiddi exxa maaqiddi miracsenta maaqiddi exxak iroh, kee tohuk lakal ludditte maaqiddi amol namma maaqiddi gititte bicissuh, toh yaanam namma perpendicularly intersecting diameters cirfat patch antenna, kee firti xexxaaral namma luddih maaqiddi gititte baxsa le λ/ maΩ 4. In order to make to5 matching branch elle geytimtam feed port, 1. L2 kee L1 celsiisenta elle geytimta aracal, anteenah impedance 50 Ω fanah geytimta. ta cibti ramaddos maroyti sahlinih murtisso kee addah tan awqenta.

1.2 celsis xalootitte maroyta patch anteenah namma maaqiddi ximmooma luk

Namma feed point le circular patch antenna simulation xalu 3 kee 4 ximmol tablen, 3haytô ximmol tet soolo wave ratio, 4haytô ximmol tet E tayyaarah radiation pattern. toh tablem duddah soolo mooyat caddo 2 addah tan caddo 2.8-2.92 GHz. toh tablem duddah qar.3 kee qar.4 too qimmo goolissoh hadaf aracat gaceh.

2 fidin rettah maynaqu korsimteh L anteenah goolisso

2.1 acassaale fidin bandih korsa L anteenah

Inverted L antenna lowsiisih exxa kee lowsiisih exxah addat tan, lowsiisih polarization kee lowsiisih polarization abnisso le, kee tet uddur λ/4 fanah yan, tohih taagah lowsis porofaayil qaynat le. takkay immay tet qagaaqagih banxi ceena le, baxsa luk dubuk inki boolta fanteena qagaaqagitak. ta warkatal goolisen L anteenah bandiwixit kaxxam baarimte. rikkissô muuci L anteenah qarwalik 5 yambulle.

Diyelektrik bordi elle geytimam FR4 bordi, daylektirik lowsis ε=4.4, daylektirik lowsis 1.5 mm, kee line width W=1 mm.

2.2 celsis xalootitte korsimteh L anteenah

Deformed inverted L antenna celsiisenta elle tamixxigem 6 kee 7 haytoh exxal tablen, 6 haytoh exxal kaadu E-plane direction diagram elle tanbulle. 6haytô muucih addal 2.37-3.29 GHz fanah yan uddur 2 fanah yan bandwidth 32.3% fanah yan, tamah bandwidth ordinary inverted L antennak kaxxaam fayya le. toh tammulleem too margaqak raqtem kibbimteh.

3 amoqayxi

ta warkat goolisso kee celsis namma nammay takkoh omnidirectional anteenah fanteena qagaaqagitak 2.85 GHz. namma anteenah celsis xalootitte margaqak raqtem kibta. keenik fanak, namma- maaqiddi ximmo maroyta patch anteena celtam gaaboyna kee kargoh xaagih kattat of madab sinni packages. ta margaqah addat xoqoysil asseh tan daylektiriik luucih xamcin daylektirik mansoofa 0.2 mm gabul le. Bandwidth deformed inverted L antenna 32.3% guftaah, tamah kargoh oytitte elle geytimta aracal broadband faxximta wak geytimta.