Iindaba

Zombini iiMultiplexers kunye neePower Dividers zizixhobo eziluncedo ekwandiseni inani lee-antenna ezinokuqhagamshelwa kwizibuko lomfundi omnye. Enye yeenzuzo eziphambili kukunciphisa iindleko zesicelo se-UHF RFID ngokwabelana ngezixhobo ezibizayo. Kule posi yebhlog, sichaza umahluko kunye noko kufuneka kuqwalaselwe xa ukhetha isixhobo esifanelekileyo sesicelo sakho.

Yintoni i-multiplexer kunye ne-de-multiplexer?

Ukuze siqonde ukuba yintoni i-RFID reader Multiplexer, siza kuyichaza ngokukhawuleza injongo ngokubanzi ye-multiplexers (mux) kunye ne-de-multiplexers (de-mux).

I-multiplexer sisixhobo esikhetha enye yeempawu ezininzi zokufaka kwaye siyithumele kwisiphumo.

I-demultiplexer sisixhobo esithumela isignali yokufaka kwenye yeemveliso ezininzi.

Zombini i-multiplexer kunye ne-de-multiplexer zifuna iiswitshi ukuze zikhethe ii-input kunye/okanye ii-outputs. Ezi switshi zisebenza ngamandla, ngoko ke i-mux kunye ne-de-mux zizixhobo ezisebenzayo.

Yintoni i-RFID reader multiplexer?

I-RFID reader multiplexer sisixhobo esidityaniswe ne-mux kunye ne-de-mux. Iqulathe i-input/output port enye kunye nee-output ports ezininzi. I-port enye ye-mux/de-mux idla ngokudityaniswa ne-RFID reader ngelixa ii-ports ezininzi zinikezelwe kuqhagamshelo lwe-antenna.

Ithumela isignali ukusuka kwizibuko lomfundi we-RFID ukuya kwenye yeezibuko ezininzi zokukhupha okanye ithumela isignali ukusuka kwenye yeezibuko ezininzi zokufaka ukuya kwizibuko lomfundi we-RFID.

Iswitshi eyakhelwe ngaphakathi ijongana nokutshintsha kwesignali phakathi kweeports kunye nexesha layo lokutshintsha.

I-RFID multiplexer ivumela uqhagamshelo lwee-antenna ezininzi kwizibuko elinye le-RFID reader. Ubungakanani besignali etshintshiweyo abuchaphazeleki kakhulu, nokuba linani lezibuko kwi-mux/de-mux.

Ngale ndlela, i-multiplexer ye-RFID enamachweba asi-8, umzekelo, inokwandisa i-4-port reader ibe yi-32-port RFID reader.

Ezinye iimpawu zibiza i-mux yazo ngokuba yindawo ephambili.

Yintoni isihluzi samandla (isihluzi samandla) kunye nesihlanganisi samandla?

Isihluzi-mandla (i-splitter) sisixhobo esahlula amandla. Isihluzi-mandla esineeport ezimbini sahlula amandla okufaka abe ziziphumo ezimbini. Ubukhulu bamandla buncitshiswa ngesiqingatha kwiiport zokukhupha.

Isihluzi-mandla sibizwa ngokuba yi-power combiner xa sisetyenziswa ngasemva.

Nantsi ingcaciso emfutshane yomahluko phakathi kwe-mux kunye ne-power divider:

I-MUX	UMHLULI WAMANDLA
I-mux iya kuba nokulahleka kwamandla rhoqo kuzo zonke ii-ports nokuba zingakanani na ii-ports. I-mux ene-port ezi-4, i-port ezi-8, kunye ne-port ezi-16 aziyi kuba nokulahlekelwa okwahlukileyo kwi-port nganye.	Isihluli samandla singawahlulahlula amandla abe yi-½ okanye i-¼ kuxhomekeke kwinani leezibuko ezikhoyo. Ukunciphisa amandla okukhulu kwenzeka kwizibuko ngalinye njengoko inani leezibuko lisanda.
I-mux sisixhobo esisebenzayo. Ifuna amandla e-DC kunye nemiqondiso yokulawula ukuze isebenze.	Isihluzi samandla sisixhobo esingasebenziyo. Asidingi ngeniso yongezelelweyo kunengeniso yeRF.
Ayizizo zonke iiports kwi-mux ye-multi-port ezivulwa ngaxeshanye. Amandla e-RF atshintshwa phakathi kweeports. I-antenna enye eqhagamshelweyo iya kunikwa amandla ngaxeshanye, kwaye isantya sokutshintsha sikhawuleza kangangokuba ii-antenna aziyi kuphoswa kukufundwa kwethegi.	Zonke iiports ezikwi-multi-port power divider zifumana amandla ngokulinganayo kwaye ngaxeshanye.
Ukwahlulwa okuphezulu kakhulu phakathi kwee-ports kuyafezekiswa. Oku kubalulekile ukuze kuthintelwe ukufundwa kwee-cross-tag phakathi kwee-antenna. Ukwahlulwa kudla ngokuba kumgama we-35 dB okanye ngaphezulu.	Ukuhlukaniswa kwezibuko kuncinci kakhulu xa kuthelekiswa neMux. Ukuhlukaniswa kwezibuko okuqhelekileyo kumalunga ne-20 dB okanye ngaphezulu. Ukufundwa kweethegi ezinqamlezileyo kunokuba yingxaki.
Ayinampembelelo ingako okanye ayinampembelelo kwi-antenna beam okanye ekucinyweni kwayo.	Xa isihluli-mandla singasetyenziswanga ngendlela eyiyo, amasimi e-RF anokurhoxiswa, kwaye umqadi we-RF we-antenna unokutshintshwa kakhulu.
Akukho buchule beRF obufunekayo ukuze ufake iMux. IMux kuya kufuneka ilawulwe yisoftware yomfundi weRFID.	Ubuchule be-RF bubalulekile ekufakeni izahluli zamandla kunye nokufezekisa isisombululo esisebenzayo. Isahluli samandla esifakwe ngendlela engafanelekanga siya konakalisa kakhulu ukusebenza kwe-RF.
Akukho tshintsho lwe-antenna olunokwenzeka	Utshintsho lwe-antenna olulungiselelwe wena lunokwenzeka. Ububanzi be-beam ye-antenna, i-angle ye-beam, njl.njl. inokutshintshwa.

I-Si Chuan Keenlion Microwave iluhlu olukhulu, igubungela amaza ukusuka kwi-0.5 ukuya kwi-50 GHz. Yenzelwe ukuphatha amandla okufaka ukusuka kwi-10 ukuya kwi-200 watts kwinkqubo yokudlulisela ye-50-ohm. Uyilo lwe-Cavity luyasetyenziswa, kwaye lulungiselelwe ukusebenza kakuhle.

Iimveliso zethu ezininzi zenzelwe ukuba zikwazi ukuxhonywa kwi-heatsink, ukuba kuyimfuneko. Zikwanomlinganiselo ophezulu we-amplitude kunye ne-phase balance, zinamandla aphezulu okuphatha, amanqanaba amahle kakhulu okuzihlukanisa kwaye ziza nepakeji eqinileyo.

Singakwazi nokwenza ngokwezifiso imveliso ye-rf passive ngokweemfuno zakho. Ungangena kwiukwenza ngokwezifisoiphepha lokubonelela ngeenkcukacha ozifunayo.