Daqar goolissoh makeelo UHF taturte RFID baxsitte

Kaxxa taamah uddur, xer waktih uddur, iroh yan uddur, kee lowsis uddur, UHF passive RFID tags RFID fokkaaqok muhimmik tan afkanittek tiyak teyna kinnim kee awayih uddur RFID lowsis gubat tan lowsis gubat gactam bictah.

kibbimte UHF taturte RFID baxsi kak yanim anteena kee baxsi chip. keenik fanak, baxsi chip amo ladih edde anuk ciggiltah tan exxaaxi maroyta: cayli angadaadih maroyta, cayli xayyos gommodmali caylih xakak maroyta, wadirih fixixih moojuleeshin maroyta, demoduleeshin maroyta, saaqat mayyaaqa / gino maroyta, qimmisiyyi asta gino maroyta, mandabba raceenah gino maroyta, kobor exxa, mesenkaca. Passive RFID tag chip taamituh faxximta cayli inkih yan cayli elle geytimam electromagnetic wave kardi qilmih addat geytima. Tohih taagah, cayli lowsis circuit UHF signal tag antenna lowsis gubat haak DC voltage fanah korsaanam faxximta, chip taamah faxximta. cayla xayyos.

RFID tags elle geytimta electromagnetic dariifa kaxxaam sissin gurral geytimtaamih taagah, culmah astah cayli boolittel loowimtaah, alfitte loowimta uddur baxsa le. Tohih taagah, chip baxaabaxsale booxah addal qaadik taamituh, nummaak cayli xayyoysoh volteej stabilization circuit faxximta. . mojuleeshin kee demojuleeshin maroyti lafa le maroyti angaaraw baxsi kee gatbara kawsa fanat. Awayih ibak, mango UHF RFID baxsitte ASK qaynatat xoqoysimta. RFID baxsih lowsis mafdaga miracsentitte gexsissa xiyitaal maroyta. Dijital maroytit gitah qagitak qimmisoonuh baxsa kardi kiryaati booxal culteek lakal, gatbara kiryaati ascossih gacsa, numma le qimmisiyyi astah horah maroyti dijital mafdagah asta qagitak qimmissuh faatacimele.

cayli angadaadih maroyta

Power recovery circuit RFID tag antenna geyteh tan UHF signal DC voltage fanah korsaanam kee boost abak chip taamah cayli akah geytannah abak geytimaanam warsan. mangoomuy takkem bictah maroytit xikne cayla maroh angadaaday. qarwalik elle tanbaalleennal mango caylih angadaadih maroytit mangom xoqoysil asse.

too cayli angadaadih maroytit, meqe maroh rikkisso matana, kee umman maroyti isi tuxxiq kee tuxxiq sinna le. Baxaabaxsale quukih caalatih addat, baxaabaxsale input voltage caalatal, baxaabaxsale output voltage faxximtaamal kee gexsit caalatal, baxaabaxsale circuit dooraanam faxximta. mango-caddoh dayood gommodmali caylih gommodmaliyyoh maroyti qarwalik 2(a) amolladih Schottky adaf dayoodittet duqaysimak. toh tuxxiq le fayya le gommodmali cayli xibbaani duddaa kee qunxa satqoh astah amplitude, kee baar luk xoqoysil asele. Takkay immay, CMOS gexsit inkih tan footimaamih addal Schottky barrier diodes akah xayyoosan innah abaanam, tamah kaadu gexsit dooro elle takke gurral designer taqabi kataasele. Muuci 2(b) Schottky diode PMOS tube lih angaaraw le diode qaynat, tamah gexsitil baxsale faxximta ximmooma lowsiisoonuh. volteej nammay takkoh maroytit ta rikkisso luk fayyale culmah astah amplitude faxxa, kee tayse volteej nammay takkoh dudda le volteej fayya le caddot tan waqdi. qarwalik 2(c) qaada diyood kibne-mooyat massos maroyta. Dikson voltage doubler circuit luk qalalisak, voltage doubler circuit luk qalalisak, laakin mango diode elementitte culsaanam kee lowsis sissinaane inkih tan Dikson voltage doubler circuit luk qalalisak geytimta. ossotinah, kah kinnim tet anteenah culmah marso baxsimteh chip baaxok, toh inkih simetrik rikkisso lih kapaasiter alfimte DC anteenah culmah terminaal chip fan wagitan wak, toh sittat boodisak chip ardi kee anteenah fanat, kee sitta ceela anteenat duqaysimak ( axcih con even) anteena. qarwalik 2(d) CMOS tubboh fidga dudda le-mooyat massos maroytit xayyowte mango kutbeeba. waado le teknoloojih caalatal, tayse cayli korsiyyih dudda geytam duudumtah, kee raqtem culmah astah amplitude celtam addah tan.

Amo gexaak passive UHF RFID tags, lakqoh lowsis akah yakkennah, chip circuit CMOS teknoloojih lowsis akah yakkennah abaanamih qaago le. xer-xeerih kiryaatii kee kutbeh raqtam cayli korsiyyih dudda cayli angadaadih maroytal fayyale raqtam fooca fan daffessa. Tama sababah, mango dizaayinerwa CMOS teknoloojih addat Schottky barrier diodes lowsiisoonuh, mango caddoh Dickson voltage doubler circuit xisneh addat geytimtaah, lowsis gubat haanam duudumtah. qarwalik 3 eskemaatiik muucisso rikkisso Schottky dayode murtisso agleh CMOS gexsiti. margaqah addat, Schottky diodes murtisam duudah pr milaage kalocess maaqattooti kee santi saro horah madqooqi, kee dubuk dagoo maysaasa abaanam faxximta xisoh amol.

mango shottky dayyoxitteh xiso UMC 0.18um CMOS gexsitih gubat faatacisen. Ken DC weeloh fokkaaqoh qaynat 5haytô muucih addal tablen.DC weeloh fokkaaqoh xalootut Schottky diode elle faxximta innal CMOS gexsitih addat geytimtaah, turn-on voltage dubuk 0.2V fanah yan, tamah RFID tags kaxxaam meqeh tan.

cayli lowsiisih maroyta

Input signal amplitude fayya le wak, cayli lowsis voltage stabilization circuit lowsis gubat haanam faxximta, DC lowsis gubat haanam faxximta voltage lowsis gubat haanam faxximta; too bisle uddurut, culmah asta qunxa wak, cayli edde yantifiqqem volteej xakak maroyta elle tan innal qunxam takkem faxximta. Amolladi caylih adoobi salcisoonuh chiip.

Volteej lowsiisih radmooma wagsiisak, volteej lowsiisih maroh xisne namma qaynatal kurruuma: parallel volteej lowsiisih maroytit kee ittallakleh volteej lowsiisih maroytit.

RFID baxsih chip addat, cayli kobxissoh kapaasiter kaxxa kapaasitansi caddo le cayli kobxissoh dudda le kibne kobxisoonuh baxsa le modulation asta geytuh, kee culmah cayli uxih culmah cayli qunxah yan uddur takkem bictah (inki uddur OOK modulation addat quuka ane wayta uddur). , cayli xayyoysoh gommodmali caylih laqna dacrisoonuh. culmah cayli kaxxam fayya iyyam kee cayli xayyoysoh gommodmali caylih cayli yeexegen caddo fan fayya iyya, gommodmali caylih hangisso gommodmali caylih xakak maroh addat caxittaamih raceena lowsiisele cayli kobxissoh kapaasiteril caddok dagah yan kibim cabaanam, tonnal gommodmali cayli xakak hadaf aracat haanam. qarwalik 7 massah gommodmali cayli lowsiisih maroytit tiyak teyna. sidiica ittallakleh axawah tan diyooditte D1, D2, D3 kee anaakar R1 gommodmali caylih gommodmali cayxi albaab kobortuh gommodmali cayli M1. Power supply voltage sidiica diodes turn-on voltage lowsiisih addat yan waqdi, M1 gate voltage lowsiisak, M1 lowsiisak, enerjih kobxissoh capacitor C1 lowsiisak geytima.

gersi qaynatih gommodmali cayli xakak maroytih radmooma ittallakleh gommodmali cayli xakak ekraaroh xoqoysimaanama. Tah eskemaatiik muuci 8haytô muucih addal yanbulle. Voltage raceenah mandabbah raceenah addat tan voltage raceenah addat tan. awqenti caylih xayyos gommodmali caylih kurruumak qanxaffe kee qeedaalisso gommodmali caylih mandabba, kee baxsi amplified taamah amplifier lowsis albaab duddi M1 tobbo, tonnal awqenti gommodmali cayli kee mandabba raceena rakiiboh dacrisaanam inki xakak le caalat.

Tama ittallakleh volteej lowsiisih maroytit mango gitah yan cayli xayyos volteej yayyaaqeenim duudaanah, takkay immay M1 tubbo lowsiisime wayte cayli mekla kee lowsiisen cayli mekla fanat ittallakleh axawah taniimih taagah, quuki uddur nabah yan waqdi, M1 tubboh amol yan volteej ximmo fayya le volteej katassa. cayli baatih. tohuk lakal, ta maroh rikkisso amo ladih abbinotteh maroytit baxsi dago caylih adoobi luk.

Mojuleeshin kee mojuleeshin maroyta

a. garuq maroyta

chip arac salcisoonuh kee cayli fayxi, mangom passive RFID baxsitte awayih uddur ASK modulation oggolan. ASK demodulation circuit tag chip, mango marih addal geytimta demodulation cogda envelope elle geytimta cogda, FIG. 9 .

volteej doubler circuit envelope detection exxa kee cayli recovery exxa rakiiboh yan, takkay immay kaxxa quukih uddur xayyoysaanam mafaxximta. caxittaamih raceena massah garayte ellecabo caddo farmo sandug maroytal. Culmah asta modulated takke waqdi, culmah enerji lowsiisak, leakage raceena envelope output voltage lowsiisak, tohih taagah kataytah tan comparator circuit modulation asta lowsiisam duudah. Input RF signal kaxxa energy variation kinniimih taagah, awayih uddur leakage raceenah addat tan sissin qaynatih sissinaane kee sissin qaynatih sissinaaneh sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh sissinaaneh addat tan sissinaaneh sissinaaneh addat tan sissinaaneh addat tan sissinaaneh sissinaaneh addat tan sissinaaneh sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan sissinaaneh addat tan. ceelalloh, awayih uddur caxittaamih caylih xayyos qunxa tekkek, toh qeedaalisso fayxi kibtam duddah booxal maqar boolale wak, takkay immay baxsi xayi booxal maqar le booxal maqar le, caxittaamih awayih uddur dudda mali geytimte asta tekkek kaxxa amplitude milaagi yenek, post-stage qeedaalisso qaadik tan taama. ta taqabih callih, caxittaamih raceenah rikkisso qar.10 elle tanbulle innal oggolimteh.

Input carrier modulated akke wayta waqdi, qabal qaynat M1 qaynat qaynat celsiisak, diode-connected NMOS qaynat bicsaanam, envelope output M1 threshold voltage xaqut culsaanam. The cayli M1 qeedalsim le; culmah quuki modulated yakke waqdi, culmah cayli chip lowsiisih, kee ta wakti sababah abto udurrutteh circuit R1 kee C1, albaab potential M1 raqteh asli caddol, kee M1 leaks Awayih uddur raqteh tan raqteh tan, toh amplitude envelope delay rapid signal output; tonnaah, quukak lakal, R1 kee C1 uddur, envelope output sissikuk asliik fayya le caddo fan gacta. Ta circuit structuret duqaysimak, kee R1, C1 kee M1 sababitte dooritak, demodulation faxximta baxaabaxsale qaynatih sissinaaneh addat geytimta. kalah mango doorit yan qeedaalisso maroytit axawah tan farmoh awqentih derret, kee mangom edde yantifiqen tiya hysteresis qeedaalisso kee taamah amplifier.

b. Mojuleeshin maroyta

Passive UHF RFID tags inkih tan backscattering modulation cogdah addat geytimta, toh yaanam, chip kee antenna fanat yan reflection coefficient milaagaanam, modulation hadaf aracat haanam. Amo gexaak, anteenah impedansi kee chip input impedansi elle faxximta innal, lowsis gubat gacta waqdi, lowsis gubat gacta waqdi, reflection coefficient lowsis gubat gacta. mangom edde tantifiqqen backscattering cogda kapaasiter lih angaaraw massah namma culmah gaba kalti anteenah fanat, qarwalik 11 elle yanbulle innal, modulation signal elle tamixxigem kapaasiter culmah gaba kalti chip lih angaaraw le switch lowsiisak, tohih taagah chip culmah impedansi milaagah.

asta horah maroyta qimbis

RFID tag addat tan cayli qimmisiyyih astah gino circuit taamah afkan, cayli qimmisiyyih taama gaba kalteek lakal digital circuit qimmisiyyih astah qimmisiyyi taama kinni. Tama designih addat tan caagiida cubbit haanam faxximta: Power supply voltage kaxxaam xer waktih addat cultek, reset signal fayya le caddoh amplitude lowsis gubat gactam faxximta, tamah digital circuit reset faxximta lowsis gubat gactam madudda; qimmisiyyi asta horah maroyti mangom qarraamissah cayli milallaagimih, toh takkem bictah taqabi bahtam; istaatiik caylih adoobi elle xiqqimtannal salactam faxxinta.

Mango way, passive RFID tag culteek lakal, cayli xayyoysoh voltage fayya iyya wakti diggowtam kee kaxxam xer wakti takkem bictah. tah faxxam margaqa qimmisiyyi astah horah maroyta qimmisiyyi astah gino too uddur fantaaxaw le cayli xayyos volteej. qarwalik 12 yaybulleem yangalen qimmisiyyi astah horah maroyta.

Tamah rakiiboh radmooma, resistor R0 kee NMOS transistor M1 fanat yan luddih addat, sissin qaynatih voltage Va., sissin qaynatih voltage vdd NMOS transistor threshold voltageik dagah yan waqdi, Va voltage rakiiboh yan voltageik raqtam. vdd elle gexsitta innal, lowsis voltage Va+|Vtp| fanah gufta wak, PMOS transistor M0 Vb elle gexsitta innal lowsis gubat gactaah, tohuk naharal Vb lowsis gubat gactaamih taagah M0 lowsis gubat gacta. Ta maroytal kaxxa taqabi istaatiik caylih baxcisiyyi yaniimi. Kaadu MOS transistor threshold voltage CMOS gexsitih addat tan gexsit luk kaxxa baxsa leemih taagah, gexsit wagsiisak sissin qaynatih sissinaane lem tamixxige. Tohih taagah, pn junction diode akah qimmisan innah, qimmoh addah voltage lowsiisoonuh kaxxa doori lem, FIG. 13 .

VDD namma pn junction diodes lih lowsis gubat gacta waqdi, PMOS transistor M0 lowsis gubat gactaah, PMOS transistor lowsis gubat gacta. ta uddur, gommodmali cayli kapaasiiter C1 addah tan caddot yan. VDD namma diodes threshold voltageik dagah culta waqdi, M0 gexsit qimmiseh, M1 gate voltage raqteeh, M1 fanah gexah yan uddur, capacitor C1 voltage lowsis gubat gacta. toh ugte wak saduh tan caddo jahaaz korimek geera, qimmisiyyi asta ginnimteh. tohuk lakal, ta maroh uddur qimmisiyyi asta ginaanam elle rakittam cayli xayyoysoh volteej gufam threshold voltage namma diodes, toh fayyale xakak le, kee soolissam naharal qimmisiyyi asta amo ladi qimmisiyyi maroyti cayli xayyoysoh volteej fayya iyyam kaxxam caatih. Taqabi.

Cayli lowsis voltage kaxxam sissikuk fayya iyya wak, resistor R1 kee M0 gate capacitance low-pass delay circuit akah takkennah abtaah, tamah M0 gate voltage sissikuk lowsis gubat gactam duude waytaah, lowsis caddol raqtam duude wayta. ta uddur M0 kibbiimele kapaasiter C1, maroyti gitah taamite waam kataasa. Ta taqabi yafdigoonuh, kapaasiter C5 aysexeexegele. cayli meklah gommodmali caylih fayya sissikuk ossek, xakbimte xalootuy kapaasiiter C5 dacrisam duuddah albaabih duddi M0 cayli meklah gommodmali caylih cayli lih, t soolisakusug dagal galab kak xagne taqabitte katassa.

Static power lowsiisih taqabi uxih ta circuit addal yan, static power lowsiisih taqabi lowsiisak MOS tube lowsiisih caddo sababitte luk dooraanam duudumtah. Static power lowsiisih taqabi inkih fidga geytuh, qimmoh signal geytimek lakal ta exxah addat tan circuit alfimtuh ossotinah raddi control circuit design abaanam faxximta. Takkay ikkah, raddi aysaxxaagek tamaate xakak way baxsale hangi yaceenim faxxinta.

Design taqabi passive UHF RFID chips elle geytimam, chips elle geytimam kee elle geytimam elle geytimam kee elle geytimam elle geytimam. Tohih taagah, cayli lowsiisih circuit lowsiisoonuh, inkih tan chip lowsiisih lowsiisoonuh, kee lowsiisih taamah lowsiisoonuh awayih uddur RFID tag chips lowsiisoonuh kaxxa taqabitte kinni.