Kodi aDuplexer?
Duplexer ndi chipangizo chomwe chimalola kulumikizana kwa magawo awiri panjira imodzi. M'makina olankhulirana pawailesi, imapatula wolandila kuchokera ku chotumizira pomwe amawalola kugawana mlongoti wamba. Makina ambiri obwereza wailesi amaphatikizapo duplexer.
Duplexers ayenera:
Amapangidwira kuti azigwira ntchito mu frequency band yomwe imagwiritsidwa ntchito ndi wolandila ndi ma transmitter ndipo iyenera kukhala yokhoza kuthana ndi mphamvu yotulutsa ya transmitter.
Perekani kukana kokwanira kwa phokoso la transmitter lomwe limachitika pafupipafupi polandila, ndipo liyenera kupangidwa kuti lizigwira ntchito, kapena kuchepera, kulekanitsa pafupipafupi pakati pa chotumizira ndi wolandila.
Perekani kudzipatula kokwanira kuti mupewe kukhudzidwa ndi wolandila.
Diplexer vs Duplexer. Kodi pali kusiyana kotani?
Diplexer ndi chipangizo chomwe chimaphatikizira zolowetsa ziwiri kuti zikhale zofanana. Zizindikiro zolowera 1 ndi 2 zimakhala ndi ma frequency osiyanasiyana. Chifukwa chake, ma siginecha pazolowetsa 1 ndi 2 amatha kukhala limodzi pazotulutsa popanda kusokonezana. Amadziwikanso ngati chophatikizira chamtanda. Duplexer ndi chipangizo chongokhala chomwe chimalola kulumikizana kwa bi-directional (duplex) kutumiza ndikulandila ma frequency mkati mwa bandi yomweyo panjira imodzi.
Mitundu yaDuplexers
Pali mitundu iwiri yoyambira ya ma duplexers: Band Pass ndi Band Reject.
Mlongoti wamba wokhala ndi duplexer
Ubwino wodziwikiratu wogwiritsa ntchito duplexer ndikuti titha kutumiza ndikulandila ndi mlongoti umodzi wokha. Ndi danga pa nsanja pamalo oyambira masiteshoni pamtengo wapatali, uwu ndi mwayi weniweni.
M'makina amtundu umodzi, pomwe pali cholumikizira chimodzi chokha ndi wolandila m'modzi, kugwiritsa ntchito duplexer kuti athe kugawana mlongoti wamba ndi chisankho cholunjika. Komabe, pamene makina amakanema ambiri okhala ndi njira zingapo zophatikizidwira ndikulandila akaganiziridwa, zinthu zimakhala zovuta.
Kuyipa kwakukulu kogwiritsa ntchito ma duplexer mu ma multichannel system kumatha kuwoneka tikaganizira za transmitter intermodulation. Uku ndiye kusakanikirana kwa ma siginecha angapo pa mlongoti.
Patulani tinyanga za Tx ndi Rx
Ngati tigwiritsa ntchito ma transmit osiyana ndikulandila tinyanga, zimatengera malo ochulukirapo pansanja.
Ubwino wawukulu ndikuti, ngakhale kuphatikizika kwapang'onopang'ono kumachitikabe chimodzimodzi pakati pa ma siginecha ophatikizidwa, palibenso njira yachindunji kuti zinthu izi zifikire.
wolandira. M'malo mwake, kudzipatula pakati pa kutumiza ndi kulandira tinyanga kumapereka chitetezo chowonjezera. Ngati ma transmitter ndi olandila akonzedwa motsatira mzere (ie: imodzi pamwamba pa inzake, nthawi zambiri imakhala ndi tinyanga yolandirira pamwamba pa nsanja), ndiye kuti kudzipatula kupitilira 50dB ndikosavuta.
Chifukwa chake pomaliza, pamakina amodzi okha, pitilizani kugwiritsa ntchito duplexer. Koma pamakina amakanema ambiri, pomwe tinyanga tating'ono tomwe timawonongera malo ambiri pansanja iliyonse, iyi ndiye njira yolimba. Imateteza dongosolo lanu bwino kusokonezedwa ndi kusokoneza kwapang'onopang'ono chifukwa cha zovuta zazing'ono komanso zovuta kuzipatula kusonkhana kapena kukonza zolakwika.
UHF DuplexerNtchito
Cholimbikitsa apa ndikupulumutsa kuyika chingwe mkati mwa nyumba.
Ikamangidwa, nyumba yanga idayikidwa ndi chingwe chotsitsa cha coaxial kuchokera padenga kupita pachipinda chochezera, chobisidwa mosamala pakhoma lamkati. Chingwe ichi chimanyamula ma TV a DVB kuchokera padenga la mlongoti kupita ku TV m'chipinda chochezera. Ndilinso ndi bokosi la TV lachingwe m'chipinda chochezeramo chomwe ndikufuna kugawa kuzungulira nyumbayo ndipo amp yogawa imayikidwa bwino pamalo okwera kuti azitha kupeza zipinda zonse. Chifukwa chake, Duplexer kumapeto kwa chingwe chotsitsa imalola kuti inyamule DVB-TV pansi pa coax ndi Cable-TV pamwamba pa coax nthawi yomweyo, ndikupatseni kusankha Frequency yoyenera yogawa Cable-TV.
Ma TV Multiplexes amayamba pa 739MHz ndikukula mpaka 800MHz. Kugawa kwa Cable-TV ndikotheka kuchokera ku 471-860 MHz. Ndidzagwiritsa ntchito gawo lotsika kwambiri kuti ndinyamule CableTV pamwamba pa ~ 488MHz ndi gawo lapamwamba kuti nditengere DVB-TV pansi. Gawo lotsika lotsika lidzanyamulanso DC kuti ipangitse mphamvu zogawa m'chipinda chapamwamba ndi Magic-eye remote control code pansi pa bokosi la Cable-TV.
Titha kusinthanso Cavity Duplexer malinga ndi zomwe mukufuna. Mutha kulowa patsamba losintha kuti mupereke zomwe mukufuna.
Nthawi yotumiza: Sep-24-2022
