Njengengxenye eyisisekelo yobuchwepheshe be-inthanethi Yezinto, amathegi e-UHF RFID asetshenziswa kabanzi enanini elikhulu lezinhlelo zokusebenza ezifana nokuthengisa esitolo esikhulu, ukugcinwa kwempahla kanye nokugcinwa kwempahla, izingobo zomlando wezincwadi, ukulandeleka okulwa nokukhohlisa, njll. Ngo-2021 kuphela, umhlaba wonke. inani lokuthumela lingaphezu kwezigidigidi ezingama-20.Kuzinhlelo zokusebenza ezingokoqobo, yini ngempela i-chip ye-UHF RFID ye-passive tag ethembele kuyo ukuze inikeze amandla?
Izici zokuphakelwa kwamandla ze-UHF RFID umaka wokungenzi lutho
1. Inikwa amandla amandla angenawaya
Ukudluliswa kwamandla angenantambo kusebenzisa imisebe ye-electromagnetic engenawaya ukudlulisa amandla kagesi ukusuka endaweni eyodwa kuya kwenye.Inqubo yokusebenza ukuguqula amandla kagesi abe amandla efrikhwensi yomsakazo ngokusebenzisa i-radio frequency oscillation, futhi amandla efrikhwensi yomsakazo aguqulwa abe amandla kagesi omsakazo womsakazo ngokusebenzisa uthi oludlulisayo.Amandla kazibuthe omsakazo womsakazo asakazeka emkhathini futhi afinyelele othingo owamukelayo, abese eguqulwa abuyele emandleni efrikhwensi yomsakazo ngothi olwamukelayo, bese igagasi lokutholwa libe amandla e-DC.
Ngo-1896, i-Italian Guglielmo Marchese Marconi yasungula umsakazo, owaqaphela ukudluliswa kwamasignali omsakazo emkhathini.Ngo-1899, u-American Nikola Tesla wahlongoza umbono wokusebenzisa ukudluliselwa kwamandla okungenantambo, futhi wasungula uthi oluyi-60m-ukuphakama, i-inductance elayishwe phezulu e-Colorado, kusetshenziswa imvamisa engu-150kHz ukufaka amandla angu-300kW.Idlulisa ibanga elingafika ku-42km, futhi ithola amandla angu-10kW athola amandla angenantambo ekugcineni.
Ukunikezwa kwamandla kagesi wethegi ye-UHF RFID kulandela lo mbono, futhi umfundi unikeza amandla kumaka ngokusebenzisa ifrikhwensi yomsakazo.Kodwa-ke, kunomehluko omkhulu phakathi kokunikezwa kwamandla kagesi we-UHF RFID we-passive tag kanye nokuhlolwa kwe-Tesla: imvamisa icishe iphindwe izikhathi eziyizinkulungwane eziyishumi phezulu, nosayizi we-antenna wehliswa izikhathi eziyinkulungwane.Njengoba ukulahlekelwa kokudluliswa okungenantambo kuhambisana nesikwele semvamisa futhi ngokulingana nesikwele sebanga, kusobala ukuthi ukwanda kokulahleka kokudlulisela kukhulu.Imodi elula yokusabalalisa okungenantambo ukusakazeka kwendawo yamahhala.Ukulahlekelwa kokusatshalaliswa kuhambisana ngokuphambene nesikwele sobude begagasi lokusabalalisa futhi ilingana nesikwele sebanga.Ukulahlekelwa kwesikhala esikhululekile ngu-LS=20lg(4πd/λ).Uma iyunithi yebanga u-d ingu-m kanye neyunithi yefrikhwensi f ithi MHz, bese i-LS= -27.56+20lgd+20lgf.
Uhlelo lwe-UHF RFID lusekelwe kumshini wokudlulisa amandla okungenantambo.Ithegi yokwenziwa ayinawo amandla ayo.Idinga ukuthola amandla efrikhwensi yomsakazo akhishwa ngumfundi futhi isungule amandla kagesi e-DC ngokulungiswa kokuphindwe kabili kwe-voltage, okusho ukusungula ugesi we-DC ngephampu yokushaja ka-Dickson.
Ibanga elisebenzayo lokuxhumana le-UHF RFID air interface linqunywa ngokuyinhloko amandla okudlulisela omfundi kanye nokulahlekelwa okuyisisekelo kokusabalalisa emkhathini.Amandla okudlulisa umfundi we-UHF band RFID ngokuvamile anomkhawulo ku-33dBm.Kusukela kufomula eyisisekelo yokulahlekelwa kokusakazwa, ukuziba noma yikuphi okunye ukulahlekelwa okungenzeka, amandla e-RF afinyelela umaka ngokusebenzisa ukudluliswa kwamandla okungenantambo angabalwa.Ubudlelwano phakathi kwebanga lokuxhumana le-UHF RFID air interface kanye nokulahlekelwa okuyisisekelo kokusakazwa namandla e-RF afinyelela umaka kuboniswe kuthebula:
| Ibanga/m | 1 | 3 | 6 | 10 | 50 | 70 |
| Ukulahleka kokusabalalisa okuyisisekelo/dB | 31 | 40 | 46 | 51 | 65 | 68 |
| Amandla e-RF afinyelela umaka | 2 | -7 | -13 | -18 | -32 | -35 |
Kungabonakala etafuleni ukuthi ukudluliswa kwamandla angenantambo kwe-UHF RFID kunezici zokulahleka okukhulu kokudlulisela.Njengoba i-RFID ithobelana nemithetho kazwelonke yokuxhumana yebanga elifushane, amandla okudlulisela omfundi anomkhawulo, ngakho ithegi inganikeza amandla aphansi.Njengoba ibanga lokuxhumana likhula, amandla efrikhwensi yomsakazo atholwe umaki wokungenzi lutho ayancipha ngokuya ngefrikhwensi, namandla okuphakela amandla ehla ngokushesha.
2. Sebenzisa ukunikezwa kwamandla ngokushaja nokukhipha ama-capacitor okugcina amandla aku-chip
(1) Ukushaja kwe-Capacitor nezici zokukhipha
Amathegi angenantambo asebenzisa ukudluliswa kwamandla angenantambo ukuze bathole amandla, bawaguqule abe amandla kagesi e-DC, bashaje futhi bagcine ama-on-chip capacitor, bese benikeza amandla kumthwalo ngokuwakhipha.Ngakho-ke, inqubo yokunikezwa kwamandla yamathegi okwenziwa yinqubo yokushaja nokukhipha i-capacitor.Inqubo yokusungula iyinqubo yokushaja emsulwa, futhi inqubo yokuphakelwa kwamandla iwukukhipha kanye nenqubo yokushaja eyengeziwe.Ukushaja okungeziwe kufanele kuqale ngaphambi kokuba i-voltage yokukhipha ifinyelele ku-voltage encane yokuhlinzeka ye-chip.
(2) I-Capacitor charge kanye nemingcele yokukhipha
1) Imingcele yokushaja
Ubude besikhathi sokushaja: τC=RC×C
I-voltage yokushaja:
ukushajwa kwamanje:
lapho i-RC iyi-resistor yokushaja futhi i-C iyi-capacitor yokugcina amandla.
2) Imingcele yokukhipha
Ubude besikhathi sokukhipha: τD=RD×C
I-voltage yokukhipha:
Ukukhipha okwamanje:
Kufomula, i-RD iwukumelana nokukhishwa, futhi i-C iyi-capacitor yokugcina amandla.
Okungenhla kubonisa izici zokuphakelwa kwamandla zamathegi okwenziwa.Akuwona umthombo we-voltage oqhubekayo noma umthombo wamanje oqhubekayo, kodwa ukushaja nokukhipha i-capacitor yokugcina amandla.Lapho i-capacitor yokugcina amandla eku-chip ishajwa ngaphezu kwe-voltage esebenzayo engu-V0 yesekethe ye-chip, inganikeza amandla kumaki.Lapho i-capacitor yokugcina amandla iqala ukunikeza amandla, amandla ayo okunikezwa kwamandla aqala ukwehla.Uma iwela ngaphansi kwe-voltage ye-chip yokusebenza engu-V0, i-capacitor yokugcina amandla ilahlekelwa amandla ayo okunikezwa kwamandla futhi i-chip ayikwazi ukuqhubeka nokusebenza.Ngakho-ke, ithegi yesixhumi esibonakalayo somoya kufanele ibe nekhono elanele lokushajwa kabusha ithegi.
Kungabonakala ukuthi imodi yokunikezwa kwamandla yamathegi okwenziwa ifanele izici zokuxhumana eziqhumayo, kanye nokunikezwa kwamandla omaka be-passive nakho kudinga ukusekelwa kokushaja okuqhubekayo.
3 Ibhalansi yokuhlinzeka kanye nesidingo
Ukunikezwa kwamandla okushaja okuntantayo kungenye indlela yokuphakela amandla, futhi umthamo wokushaja wamandla antantayo uguqulelwa kumthamo wokushajwa.Kepha bonke banenkinga efanayo, okungukuthi, ukunikezwa kwamandla kwamathegi we-UHF RFID adinga ukulinganisa ukunikezwa kanye nesidingo.
(1) Ukuhlinzeka kanye nokudinga ibhalansi yemodi yokuphakelwa kwamandla ngokuqhuma kokuxhumana
Izinga lamanje le-ISO/IEC18000-6 lamathegi angenzi lutho e-UHF RFID ayingxenye yohlelo lokuxhumana oluqhumayo.Kumathegi okwenziwa, akukho siginali edluliswayo phakathi nesikhathi sokwamukela.Nakuba isikhathi sokuphendula sithola igagasi lenkampani yenethiwekhi, silingana nokuthola umthombo we-oscillation, ngakho-ke singabhekwa njengomsebenzi olula.Indlela.Kulolu hlelo lokusebenza, uma isikhathi sokwamukela sisetshenziswa njengesikhathi sokushaja se-capacitor yokugcina amandla, futhi isikhathi sokuphendula siyinkathi yokukhipha i-capacitor yokugcina amandla, inani elilinganayo lenkokhiso kanye nokukhishwa ukuze kugcinwe ibhalansi yokunikezwa kanye nesidingo kuba isimo esidingekayo ukuze kugcinwe ukusebenza okuvamile kwesistimu.Kungakwazi ukwaziwa ngomshini wokuphakelwa kwamandla kamaka we-UHF RFID oshiwo ngenhla ukuthi ukuphakelwa kwamandla kamaka we-UHF RFID akuwona umthombo wamanje oqhubekayo noma umthombo wamandla kagesi ongashintshi.Lapho ithegi ye-capacitor yokugcina amandla ishajwa ku-voltage ephakeme kune-voltage evamile yokusebenza yesekethe, ukunikezwa kwamandla kuyaqala;lapho ithegi ye-capacitor yokugcina amandla ikhishwa ku-voltage ephansi kune-voltage evamile yokusebenza yesekethe, ukunikezwa kwamandla kuyamiswa.
Ngokuxhumana okuqhume, okufana ne-passive tag ye-UHF RFID air interface, inkokhiso ingashajwa ngaphambi kokuthi ithegi ithumele ukuqhuma kwempendulo, okwanele ukuqinisekisa ukuthi i-voltage eyanele ingagcinwa kuze kuqedwe impendulo.Ngakho-ke, ngaphezu kwemisebe yefrikhwensi yomsakazo enamandla ngokwanele umaki angayithola, i-chip nayo iyadingeka ukuthi ibe namandla okwanele e-on-chip kanye nesikhathi esanele sokushaja.Ukusetshenziswa kwamandla okuphendula umaka nesikhathi sokuphendula kufanele kushintshwe.Ngenxa yebanga phakathi kwethegi nomfundi, isikhathi sokuphendula sihlukile, indawo ye-capacitor yokugcina amandla inomkhawulo nezinye izici, kungase kube nzima ukulinganisa ukunikezwa kanye nesidingo ekuhlukaniseni isikhathi.
(2) Imodi yokuphakelwa kwamandla antantayo yokuxhumana okuqhubekayo
Ukuxhumana okuqhubekayo, ukuze kugcinwe ukunikezwa kwamandla okungaphazamiseki kwe-capacitor yokugcina amandla, kufanele kukhishwe futhi kukhokhiswe ngesikhathi esifanayo, futhi isivinini sokushaja sifana nesivinini sokushaja, okungukuthi, amandla okunikezwa kwamandla agcinwa ngaphambi kwesikhathi. ukuxhumana kunqanyuliwe.
Ukuhlonza imvamisa yomsakazo we-Passive tag code kanye ne-UHF RFID indinganiso yamanje ye-ISO/IEC18000-6 inezici ezifanayo.Isimo sokuthola umaka sidinga ukwehliswa futhi sikhishwe ikhodi, futhi isimo sokuphendula sidinga ukushintshwa nokuthunyelwa.Ngakho-ke, kufanele yakhelwe ngokuvumelana nokuxhumana okuqhubekayo.Isistimu yokunikeza amandla we-chip chip.Ukuze izinga lokushaja lifane nezinga lokushajwa, iningi lamandla atholwe umaka kufanele asetshenziselwe ukushaja.
Izinsiza ze-RF ezabiwe
1. I-RF front-end yomaka okwenziwayo
Amathegi asetshenziswayo awasetshenziswa nje kuphela njengomthombo wamandla wamathegi namakhadi eposi kumandla efrikhwensi yomsakazo avela kubafundi, kodwa okubaluleke kakhulu, ukudluliswa kwesignali yomyalelo isuka kumfundi iye kumaki kanye nokudluliselwa kwesignali yokuphendula isuka kumaki iye kumfundi itholakale ngokudluliswa kwedatha okungenantambo.Amandla efrikhwensi yomsakazo atholwe umaka kufanele ahlukaniswe abe izingxenye ezintathu, ezisetshenziselwa i-chip ukuze isungule ukunikezwa kwamandla, ikhiphe isignali (okuhlanganisa isignali yomyalo newashi lokuvumelanisa) futhi inikeze inkampani yokuphendula.
Imodi yokusebenza ye-UHF RFID evamile yamanje inezici ezilandelayo: isiteshi se-downlink samukela imodi yokusakaza, futhi isiteshi se-uplink samukela imodi yokwabelana ngamathegi amaningi impendulo yokulandelana kwesiteshi esisodwa.Ngakho-ke, mayelana nokudluliswa kolwazi, kungokwendlela yokusebenza elula.Kodwa-ke, njengoba ithegi ngokwayo ingakwazi ukunikeza inkampani yokudlulisela, impendulo yomaka idinga ukunikeza inkampani yenethiwekhi ngosizo lomfundi.Ngakho-ke, uma ithegi iphendula, mayelana nesimo sokuthumela, zombili iziphetho zokuxhumana zisesimweni sokusebenza esiyi-duplex.
Ezifundeni ezihlukene zokusebenza, amayunithi esekethe afakwa emsebenzini umaka ahlukile, futhi amandla adingekayo ukuze amayunithi esekethe ahlukene asebenze nawo ahlukile.Wonke amandla avela kumandla efrikhwensi yomsakazo owamukelwe ilegi.Ngakho-ke, kuyadingeka ukulawula ukusatshalaliswa kwamandla e-RF ngokunengqondo nalapho kufanele.
2. Ukusebenzisa amandla e-RF ngamahora okusebenza ahlukene
Lapho ithegi ingena emkhakheni we-RF womfundi futhi iqala ukwakha amandla, kungakhathaliseki ukuthi umfundi uthumela siphi isignali ngalesi sikhathi, ithegi izohlinzeka ngawo wonke amandla e-RF atholiwe kusekethe yokuphinda iphindwe kabili kagesi ukuze ishaje i-on-chip energy storage capacitor. , ngaleyo ndlela kusungulwa ukunikezwa kwamandla kwe-chip.
Lapho umfundi edlulisela isignali yomyalo, isignali yokudlulisela yomfundi iyisiginali ebhalwe ngekhodi idatha yomyalo kanye ne-amplitude elungiswa ngokulandelana kwe-spectrum yokusabalalisa.Kukhona izingxenye zenkampani yenethiwekhi nezingxenye zebhande eseceleni ezimelela idatha yomyalo kanye nokulandelana kwe-spectrum esakaza kusiginali etholwe umaka.Isamba samandla, amandla enkampani yenethiwekhi, nezingxenye zebhande eseceleni zesiginali eyamukelwe zihlobene nokuguquguquka.Ngalesi sikhathi, ingxenye yokushintshashintsha isetshenziselwa ukudlulisa ulwazi lokuvumelanisa lomyalo kanye nokulandelana kwe-spectrum yokusabalalisa, futhi amandla aphelele asetshenziselwa ukushaja i-on-chip energy storage capacitor, eqala ngesikhathi esifanayo ukunikeza amandla ku-chip. Isekhethi yokukhipha ukuvumelanisa kanye neyunithi yesekhethi yesiginali yokulahlwa kwe-oda.Ngakho-ke, phakathi nenkathi lapho umfundi ethumela khona umyalelo, amandla efrikhwensi yomsakazo atholwe umaka asetshenziswa ukuze ithegi iqhubeke nokushaja, ikhiphe isignali yokuvumelanisa, idicilele phansi futhi ikhombe isignali yomyalelo.I-capacitor yethegi yokugcina amandla isesimweni sokushaja esintantayo.
Uma ithegi iphendula kumfundi, isignali yomfundi edlulisiwe iyisiginali eshintshwa yi-amplitude yewashi le-spectrum spread spectrum chip rate sub-rate clock.Kusignali etholwe umaka, kunezingxenye zenkampani yenethiwekhi nezingxenye zebhande eseceleni ezimelela iwashi lesilinganiso esingaphansi sesilinganiso se-spectrum spectrum.Ngalesi sikhathi, ingxenye yokushintshashintsha isetshenziselwa ukudlulisa izinga le-chip kanye nolwazi lwewashi lokukala lokulandelana kwe-spectrum, futhi amandla aphelele asetshenziselwa ukushaja i-on-chip energy storage capacitor nokumodela idatha eyamukelwe nokuthumela impendulo umfundi.Isekhethi yokukhipha ukuvumelanisa kwe-chip kanye namandla okunikezwa kweyunithi yeyunithi yokushintsha kwesignali yokuphendula.Ngakho-ke, phakathi nesikhathi lapho umfundi ethola khona impendulo, ithegi ithola amandla efrikhwensi yomsakazo futhi isetshenziselwa umaka ukuqhubeka nokushaja, isignali yokuvumelanisa i-chip iyakhishwa futhi idatha yokuphendula ishintshiwe futhi impendulo ithunyelwa.I-capacitor yethegi yokugcina amandla isesimweni sokushaja esintantayo.
Ngamafuphi, ngaphezu kwethegi engena emkhakheni we-RF womfundi nokuqala ukusungula isikhathi sokuphakelwa kwamandla, ithegi izohlinzeka ngawo wonke amandla e-RF atholiwe kusekethe yokulungisa kabusha i-voltage-double double ukuze ishaje i-on-chip energy storage capacitor, ngaleyo ndlela kusungulwe. i-chip power supply.Ngokulandelayo, ithegi ikhipha ukuvumelanisa esignali yefrikhwensi yomsakazo eyamukelwe, isebenzisa ukudilizwa komyalo, noma imodela futhi idlulisele idatha yokusabela, konke lokhu kusebenzisa amandla efrikhwensi yomsakazo owamukelwe.
3. Izidingo zamandla e-RF zezinhlelo zokusebenza ezahlukene
(1) Izidingo zamandla e-RF zokudlulisa amandla okungenantambo
Ukudluliswa kwamandla okungenantambo kusungula ukunikezwa kwamandla kumaki, ngakho-ke kudinga kokubili i-voltage eyanele ukushayela isekethe ye-chip, namandla anele namandla aqhubekayo okunikezwa kwamandla.
Ukunikezwa kwamandla okudluliswa kwamandla okungenantambo ukusungula ukunikezwa kwamandla ngokuthola amandla enkundla ye-RF omfundi kanye nokulungiswa kokuphindwe kabili kwe-voltage lapho ithegi ingenawo amandla kagesi.Ngakho-ke, ukuzwela kwayo kokwamukela kunqunyelwe ukwehla kwe-voltage yeshubhu ye-diode yokuthola indawo engaphambili.Kuma-chips e-CMOS, ukuzwela okutholayo kokuphinda kuphindwe kabili amandla kagesi kuPhakathi kuka -11 kanye -0.7dBm, ibhodlela lamathegi angenzi lutho.
(2) Izidingo zamandla e-RF zokuthola isignali etholiwe
Ngenkathi ukulungiswa kokuphindwa kabili kwe-voltage kusungula ukuphakelwa kwamandla e-chip, umaka udinga ukuhlukanisa ingxenye yamandla efrikhwensi yomsakazo owamukelwe ukuze unikeze isifunda sokutholwa kwesignali, okuhlanganisa ukutholwa kwesignali yomyalo kanye nokutholwa kwewashi okuvumelanayo.Ngenxa yokuthi ukutholwa kwesignali kwenziwa ngaphansi kwesimo sokuthi ukuhlinzekwa kwamandla kwethegi kusungulwe, ukuzwela kokunciphisa akukhawulelwe ukwehla kwamandla kagesi weshubhu le-diode etholakala ekupheleni, ngakho-ke ukuzwela kokwamukela kuphakeme kakhulu kunamandla angenantambo. ukudluliswa okuthola ukuzwela, futhi kungokokutholwa kwe-amplitude yesignali, futhi asikho isidingo samandla amandla.
(3) Izidingo zamandla e-RF zokuphendula umaka
Uma ithegi iphendula ekuthunyelweni, ngaphezu kokuthola iwashi elivumelanisiwe, idinga futhi ukwenza ukushintshaniswa kwe-pseudo-PSK kusiphathi esitholiwe (equkethe imvilophu yokushintsha iwashi) futhi ibone ukudluliswa kokuhlehla.Ngalesi sikhathi, izinga elithile lamandla liyadingeka, futhi inani lalo lincike ebangeni lomfundi kumathegi kanye nokuzwela komfundi ozokwamukela.Njengoba indawo yokusebenza yomfundi ivumela ukusetshenziswa kwemiklamo eyinkimbinkimbi, umamukeli angakwazi ukusebenzisa idizayini yomsindo ophansi yangaphambili, futhi ukuhlonza imvamisa yomsakazo wokuhlukanisa amakhodi kusebenzisa ukuguqulwa kwe-spectrum yokusabalalisa, kanye nokuzuza kwe-spectrum nokuzuza kwesistimu ye-PSK. , ukuzwela komfundi kungase kuklanywe ukuba kuphakame ngokwanele.Ukuze izidingo zesignali yokubuyisela ilebula zehliswe ngokwanele.
Ukufingqa, amandla efrikhwensi yomsakazo atholwe umaka anikezwa ngokuyinhloko njengamandla okulungisa i-voltage yokudlulisa amandla aphindwe kabili, bese kuba nenani elifanele leleveli yokutholwa kwesignali yethegi kanye nenani elifanele lamandla okubuyisela emuva abelwe ukuzuza amandla anengqondo. ukusatshalaliswa nokuqinisekisa ukushajwa okuqhubekayo kwe-capacitor yokugcina amandla.kuwumklamo ongenzeka futhi onengqondo.
Kuyabonakala ukuthi amandla efrikhwensi yomsakazo atholwe amathegi e-passive anezidingo ezahlukahlukene zohlelo, ngakho-ke idizayini yokusabalalisa amandla omsakazo werediyo iyadingeka;izidingo zokusetshenziswa kwamandla efrikhwensi yomsakazo ngezikhathi zokusebenza ezahlukene zihlukile, ngakho-ke kuyadingeka ukuthi kube nedizayini yokusabalalisa amandla efrikhwensi yomsakazo ngokwezidingo zezikhathi zokusebenza ezahlukahlukene;Izinhlelo zokusebenza ezihlukene zinezidingo ezihlukene zamandla e-RF, phakathi kwawo ukudluliswa kwamandla angenantambo kudinga amandla amaningi, ngakho ukwabiwa kwamandla e-RF kufanele kugxile ezidingweni zokudluliswa kwamandla angenantambo.
Amathegi e-UHF RFID asebenzisa amandla angenantambo ukuze asungule ukunikezwa kwamandla kathegi.Ngakho-ke, ukusebenza kahle kokunikezwa kwamandla kuphansi kakhulu futhi amandla okunikezwa kwamandla abuthakathaka kakhulu.I-tag chip kufanele yakhelwe ngokusetshenziswa kwamandla okuphansi.Isifunda se-chip sinikwa amandla ngokushaja nokukhipha i-capacitor yokugcina amandla eku-chip.Ngakho-ke, ukuze kuqinisekiswe ukusebenza okuqhubekayo kwelebula, i-capacitor yokugcina amandla kufanele ikhokhiswe ngokuqhubekayo.Amandla efrikhwensi yomsakazo atholwe yilomaka anezinhlelo zokusebenza ezintathu ezihlukene: ukulungiswa kokuphindwe kabili kwe-voltage ukuze kunikezwe amandla, ukwamukela isignali yomyalo kanye nokwehlisa, kanye nokuguquguquka kwesignali yokuphendula kanye nokudlulisa.Phakathi kwazo, ukuzwela okutholayo kokulungiswa okuphindwe kabili kwe-voltage kukhawulelwe ukwehla kwe-voltage ye-rectifier diode, okuba isixhumi esibonakalayo somoya.ibhodlela.Ngalesi sizathu, ukwamukela isignali kanye nokwehliswa kwezimpawu kanye nokushintshwa kwesignali yokusabela kanye nokudlulisa kuyimisebenzi eyisisekelo okufanele iqinisekiswe uhlelo lwe-RFID.Lapho amandla okunikezwa kwamandla kagesi eqinile umaka wokulungisa i-voltage doubler rectifier, umkhiqizo uba nokuncintisana kakhulu.Ngakho-ke, umbandela wokusabalalisa ngokuhluzekile amandla e-RF atholakele ekwakhiweni kohlelo lomaka ukukhulisa ukunikezwa kwamandla e-RF ngokulungiswa kwe-voltage doubler ngangokunokwenzeka esimisweni sokuqinisekisa ukwehliswa kwesiginali eyamukelwe kanye nokudluliswa kwempendulo. isignali.
Isikhathi sokuthumela: Sep-02-2022