Iindaba

Zombini ii-Multiplexers kunye ne-Power Dividers zizixhobo eziluncedo zokwandisa inani leeriyali ezinokuqhagamshelwa kwizibuko lomfundi omnye. Enye yeenzuzo eziphambili kukunciphisa iindleko zesicelo se-UHF RFID ngokwabelana ngezixhobo ezibizayo. Kule post yebhlog, sichaza umahluko kwaye yintoni ekufuneka iqwalaselwe xa ukhetha isixhobo esifanelekileyo kwisicelo sakho.

Yintoni i-multiplexer kunye ne-de-multiplexer?

Ukuqonda ukuba yintoni i-RFID umfundi we-Multiplexer siya kuchaza ngokukhawuleza injongo ngokubanzi ye-multiplexers (mux) kunye ne-de-multiplexers (de-mux).

I-multiplexer sisixhobo esikhetha enye yeempawu ezininzi zegalelo kwaye siyigqithisele kwisiphumo.

I-demultiplexer sisixhobo esidlulisela phambili isignali yegalelo kwenye yeziphumo ezininzi.

Zombini i-multiplexer kunye ne-de-multiplexer zifuna utshintsho ukukhetha amagalelo kunye/okanye iziphumo. Olu tshintsho lunikwe amandla, kwaye ke i-mux kunye ne-de-mux zizixhobo ezisebenzayo.

Yintoni i-RFID yokuphindaphinda umfundi?

I-multiplexer yomfundi we-RFID sisixhobo esiyindibaniselwano ye-mux kunye ne-de-mux. Iqulathe igalelo elinye/imveliso yezibuko kunye nemveliso emininzi/yengeniso. Izibuko elinye le-mux/de-mux lidla ngokudityaniswa kumfundi we-RFID ngelixa amazibuko amaninzi enikezelwe kuqhagamshelo lwe-eriyali.

Inokuba idlulisela phambili umqondiso kwizibuko lomfundi weRFID ukuya kwelinye lamazibuko emveliso amaninzi okanye idlulise imiqondiso ukusuka kwelinye lamazibuko amaninzi kwizibuko lomfundi weRFID.

Utshintsho olwakhelwe ngaphakathi luthatha inkathalo yokutshintsha komqondiso phakathi kwamazibuko kunye nexesha lawo lokutshintsha.

I-multiplexer ye-RFID yenza uqhagamshelo lwe-eriyali ezininzi kwizibuko elinye lomfundi we-RFID. Ubungakanani bophawu olutshintshiweyo abuchaphazeleki kakhulu, kungakhathaliseki inani lezibuko kwi-mux/de-mux.

Ngaloo ndlela, i-8-port RFID multiplexer, umzekelo, inokwandisa umfundi we-4-port kwi-32-port ye-RFID yomfundi.

Ezinye iibrendi zikwabiza i-mux yazo ngokuba yi-hub.

Yintoni isahluli samandla (umhlukanisi wamandla) kunye nomdibanisi wamandla?

Isahluli samandla (i-splitter) sisixhobo esahlula amandla. Isahluli samandla esinezibuko ezi-2 sahlula amandla okufakwayo kwiziphumo ezimbini. Ubungakanani bamandla buqingqiwe kwizibuko zemveliso.

Isahluli samandla sibizwa ngokuba sisidibanisi samandla xa sisetyenziswa umva.

Nantsi inkcazo ekhawulezayo yomahluko phakathi kwe-mux kunye nesahluli samandla:

MUX	UMDLALO WAMANDLA
I-mux iyakuba nelahleko yamandla rhoqo kuwo wonke amazibuko nokuba leliphi inani lamazibuko. I-4-port, i-8-port, kunye ne-16-port mux ayiyi kuba nelahleko eyahlukileyo kwi-port nganye.	Isahluli samandla sizakwahlula amandla kwi ½ okanye ¼ ngokuxhomekeke kwinani lamazibuko akhoyo. Unciphiso olukhulu lwamandla lufunyanwa kwizibuko ngalinye njengoko inani lamazibuko linyuswa.
I-mux sisixhobo esisebenzayo. Ifuna amandla eDC kunye nemiqondiso yokulawula ukusebenza.	Isahluli samandla sisixhobo sokwenziwa. Ayifuni naliphi na igalelo elongezelelweyo kunegalelo leRF.
Ayizizo zonke izibuko kwi-multi-port mux ezivuliweyo ngexesha elinye. Amandla eRF atshintshelwa phakathi kwamazibuko. Inye kuphela i-eriyali eqhagamshelweyo eya kunikwa amandla ngexesha, kwaye isantya sokutshintsha sikhawuleza kangangokuba ii-eriyali aziyi kuphoswa yithegi yokufunda.	Onke amazibuko kwisahluli samandla sezibuko ezininzi afumana amandla ngokulinganayo nangexesha elinye.
Ukwahlukaniswa okuphezulu kakhulu phakathi kwamazibuko kuphunyeziwe. Oku kubalulekile ukuthintela ukufundwa kwethegi phakathi kwee-eriyali. Ukwahlukaniswa kuqhelekile kuluhlu lwe-35 dB okanye ngaphezulu.	Ukwahlukaniswa kwezibuko kuncinci kancinci xa kuthelekiswa ne-Mux. Ukwahlulwa kwezibuko okuqhelekileyo kujikeleze i-20 dB okanye ngaphezulu. Ukufundwa kwethegi ngokunqamlezayo kunokuba ngumba.
Inempembelelo encinci okanye ayinayo kumqadi we-eriyali okanye ukucinywa.	Xa isahluli samandla singasetyenziswanga ngendlela eyiyo, iindawo zeRF zinokurhoxiswa, kwaye umqa weRF we-eriyali unokuguqulwa kakhulu.
Akukho buchule be-RF obufunekayo ukufaka i-Mux. I-Mux kuya kufuneka ilawulwe yi-software yomfundi we-RFID.	Ubuchwephesha be-RF bubalulekile ukufaka izahluli zamandla kunye nokuphumeza isisombululo esisebenzayo. Isahluli samandla esifakelweyo ngokungachanekanga sinokuyonakalisa kakhulu ukusebenza kweRF.
Akukho lutshintsho lwe-eriyali oluqhelekileyo lunokwenzeka	Utshintsho lwe-eriyali eqhelekileyo luyenzeka. Ububanzi be-antenna, i-engile ye-beam, njl. njl.

Si Chuan Keenlion Microwave ukhetho olukhulu, olugubungela amaza ukusuka kwi-0.5 ukuya kwi-50 GHz. Zenzelwe ukuphatha ukusuka kwi-10 ukuya kwi-200 igalelo lamandla kwi-50-ohm inkqubo yokuhambisa. Uyilo lweCavity luyasetyenziswa, kwaye lulungiselelwe ukusebenza kakuhle.

Uninzi lweemveliso zethu ziyilwe ngohlobo lokuba zifakwe kwi-heatsink, ukuba kuyimfuneko. Zikwabonisa i-amplitude ekhethekileyo kunye nebhalansi yesigaba, inokuphatha amandla aphezulu, amanqanaba amahle kakhulu okuzahlula kwaye iza nepakethe erhabaxa.

Sisenokwenza imveliso yerf passive ngokweemfuno zakho. Ungangenisa iukwenza ngokwezifisoiphepha ukunika iinkcukacha ozifunayo.