Nhau

MaMultiplexers nePower Dividers zvishandiso zvinobatsira kuwedzera huwandu hweantenna dzinogona kubatanidzwa kune imwe port yemuverengi. Chimwe chezvakanakira zvikuru kuderedza mutengo weUHF RFID application nekugovana hardware inodhura. Muchinyorwa chino cheblog, tinotsanangura mutsauko uye zvinofanirwa kufungwa nezvazvo pakusarudza mudziyo wakakodzera application yako.

Chii chinonzi multiplexer ne de-multiplexer?

Kuti tinzwisise kuti RFID reader Multiplexer chii, tichatsanangura nekukurumidza chinangwa chikuru che multiplexers (mux) uye de-multiplexers (de-mux).

Multiplexer mudziyo unosarudza chimwe chezviratidzo zvekupinda zvakawanda wochitumira kune chinobuda.

Demultiplexer chishandiso chinotumira chiratidzo chekupinda kune chimwe chezvinobuda zvakawanda.

Zvese zviviri multiplexer ne de-multiplexer zvinoda maswichi kuti usarudze ma inputs uye/kana ma outputs. Maswichi aya anofambiswa nemagetsi, saka mux ne de-mux zvishandiso zvinoshanda.

Chii chinonzi RFID reader multiplexer?

RFID reader multiplexer mudziyo une musanganiswa we mux ne de-mux. Une imwe input/output port uye akawanda output/input ports. Imwe chete mux/de-mux inowanzo batanidzwa kune RFID reader nepo akawanda ma ports akatsaurirwa kubatana kwe antenna.

Inotumira chiratidzo kubva pachiteshi cheRFID reader kuenda kune chimwe chezviteshi zvakawanda zvekuburitsa kana kutumira zviratidzo kubva kune chimwe chezviteshi zvakawanda zvekupinza kuenda kuchiteshi cheRFID reader.

Swichi yakavakirwa mukati inotarisira kushandura kwechiratidzo pakati pemaports nenguva yekuchinja kwayo.

Iyo RFID multiplexer inobvumira kubatana kwema antenna akawanda kune imwe port yeRFID reader. Hukuru hwesignali yakachinjwa hahukanganisike zvakanyanya, zvisinei nehuwandu hwema ports ari mu mux/de-mux.

Nenzira iyoyo, 8-port RFID multiplexer, semuenzaniso, inogona kuwedzera 4-port reader kuita 32-port RFID reader.

Mamwe mabhurocha anotaurawo kuti mux yavo inzvimbo huru.

Chii chinonzi power divider (power splitter) uye power combiner?

Chinopatsanura simba (splitter) chishandiso chinopatsanura simba. Chinopatsanura simba chine maport maviri chinopatsanura simba rekupinda muzvinhu zviviri zvinobuda. Hukuru hwesimba hunoderedzwa nehafu mumaport ezvinobuda.

Chinoparadzanisa simba chinonzi power combiner kana chikashandiswa ne reverse.

Heino pfupiso pfupi yemusiyano uripo pakati pemux nepower divider:

MUX	MUGOVHISI WESIMBA
Mux icharamba ichirasikirwa nemagetsi mumaports ese pasinei nehuwandu hwemaports. Mux ine maports mana, maports masere, uye 16-ports haizove nekurasikirwa kwakasiyana paport imwe neimwe.	Chinopatsanura simba chinopatsanura simba kuita ½ kana ¼ zvichienderana nehuwandu hwemaports aripo. Kudzikiswa kwesimba kukuru kunoitika muchiteshi chimwe nechimwe sezvo huwandu hwemaports huchiwedzera.
Mux mudziyo unoshanda. Unoda simba reDC uye masaini ekudzora kuti ushande.	Chinoparadzanisa simba mudziyo usingashande. Hachidi chero chinhu chekuwedzera kunze kweRF input.
Haasi maport ese ari mu multi-port mux anobatidzwa panguva imwe chete. Simba reRF rinochinjirwa pakati pemaports. Antena imwe chete yakabatana ndiyo inozoshandiswa panguva imwe chete, uye kumhanya kwekuchinja kunokurumidza zvekuti maantenna haazopotsa kuverenga tag.	Maport ese ari muchikamu chemagetsi chine maport akawanda anowana simba zvakaenzana uye panguva imwe chete.
Kuparadzaniswa kwakanyanya pakati pemaports kunowanikwa. Izvi zvakakosha kudzivirira kuverenga kwema cross-tag pakati peantennas. Kuparadzaniswa kunowanzova pakati pe35 dB kana kupfuura.	Kupatsanurwa kwechiteshi kwakaderera zvishoma kana tichienzanisa neMux. Kupatsanurwa kwechiteshi kwakajairika kunosvika 20 dB kana kupfuura. Kuverengwa kwemavara akasiyana kunogona kuva dambudziko.
Haikanganisi zvakanyanya kana kuti haina simba rakawanda pakubata kana kudzimwa kweantenna.	Kana chigadziri chemagetsi chikasashandiswa nemazvo, minda yeRF inogona kukanzurwa, uye mwenje weRF weantenna unogona kuchinjwa zvakanyanya.
Hapana hunyanzvi hweRF hunodiwa kuti uise Mux. Mux inofanira kudzorwa nesoftware yeRFID reader.	Unyanzvi hweRF hwakakosha pakuisa ma "power dividers" uye kuwana mhinduro inoshanda. "Power divider" isina kuiswa zvakanaka inogona kukanganisa mashandiro e "RF".
Hapana shanduko ye antenna yakagadzirwa nemaitiro ayo inogoneka	Kugadzirisa antenna yakagadzirwa neantena kunogona kuitwa. Kugona kuchinja hupamhi hwedanda reAntena, kona yedanda, nezvimwewo.

Si Chuan Keenlion Microwave ine sarudzo yakakura, inofukidza mafrequency kubva pa0.5 kusvika ku50 GHz. Yakagadzirwa kuti ikwanise kubata simba rekupinda re10 kusvika ku200 watts musystem yekutumira ye50-ohm. Magadzirirwo emaburi anoshandiswa, uye akagadzirwa kuti ashande zvakanaka.

Zvizhinji zvezvigadzirwa zvedu zvakagadzirwa nenzira yekuti zvikwanise kuiswa pa heatsink, kana zvichidikanwa. Zvine amplitude uye phase balance yakanaka, zvine simba rekubata, mazinga ekudzivirira ega ega akanaka uye zvine kurongedza kwakasimba.

Tinogona zvakare kugadzirisa chigadzirwa cheRF passive zvinoenderana nezvaunoda. Unogona kuisa mukugadzirisapeji kuti upe zvinodiwa zvaunoda.