I-Duplexer ye-Passive RF Cavity
KuyiniI-Duplexer?
I-duplexer iyithuluzi elivumela ukuxhumana okuqondile ngesiteshi esisodwa. Ezinhlelweni zokuxhumana ngomsakazo, ihlukanisa umamukeli kumthumeli ngenkathi ivumela ukuthi babelane nge-antenna efanayo. Izinhlelo eziningi zokuphindaphinda ngomsakazo zifaka i-duplexer.
Ama-duplexer kumele:
Yenzelwe ukusebenza ebhendini yemvamisa esetshenziswa yi-receiver kanye ne-transmitter futhi kumele ikwazi ukuphatha amandla okukhipha e-transmitter.
Nikeza ukwenqatshwa okwanele komsindo wokudlulisela okwenzeka ngemvamisa yokwamukela, futhi kumele kwakhiwe ukuthi kusebenze, noma ngaphansi, kokuhlukaniswa kwemvamisa phakathi kokudlulisela nokwamukela.
Nikeza ukwahlukanisa okwanele ukuvimbela ukungezwani kokwamukela.
I-Diplexer vs i-Duplexer. Uyini umehluko?
I-diplexer iyithuluzi elingasebenzi elihlanganisa okokufaka okubili kube umphumela ojwayelekile. Izimpawu zokufaka 1 no-2 zihlala kumabhendi emvamisa ahlukene. Ngenxa yalokho, izimpawu zokufaka 1 no-2 zingahlala ndawonye kokukhiphayo ngaphandle kokuphazamisana. Yaziwa nangokuthi i-cross band combiner. I-duplexer iyithuluzi elingasebenzi elivumela ukuxhumana okuqondile (duplex) kokudlulisa nokwamukela amaza ngaphakathi kwebhendi efanayo endleleni eyodwa.
Izinhlobo zeAma-Duplexer
Kunezinhlobo ezimbili eziyisisekelo zama-duplexer: i-Band Pass kanye ne-Band Reject.
I-antenna evamile ene-duplexer
Inzuzo esobala yokusebenzisa i-duplexer ukuthi singathumela futhi samukele nge-antenna eyodwa kuphela. Njengoba sinendawo emibhoshongweni ezindaweni zesiteshi esiyisisekelo ngentengo ephezulu, lokhu kuyinzuzo yangempela.
Ezinhlelweni zesiteshi esisodwa, lapho kukhona umthumeli oyedwa kanye nomukeli oyedwa, ukusebenzisa i-duplexer ukuze babelane nge-antenna efanayo kuyisinqumo esilula. Kodwa-ke, lapho kucatshangelwa izinhlelo zeziteshi eziningi ezineziteshi eziningana zokudlulisa nokwamukela ezihlanganisiwe, isimo siba nzima kakhulu.
Ububi obukhulu bokusebenzisa ama-duplexer ezinhlelweni zeziteshi eziningi bungabonakala uma sicabangela i-transmitter intermodulation. Lokhu ukuxubana kwezimpawu zokudlulisa eziningi ku-antenna.
Ama-antenna e-Tx ne-Rx ahlukene
Uma sisebenzisa ama-antenna ahlukene okudlulisa nokwamukela, kuthatha isikhala esiningi embhoshongweni.
Inzuzo enkulu ukuthi, nakuba i-intermodulation engasebenzi isaqhubeka ngendlela efanayo phakathi kwezibonakaliso ezidluliselwe ezihlanganisiwe, akusekho indlela eqondile yokuthi le mikhiqizo ifinyelele kuyo.
umamukeli. Esikhundleni salokho, ukuhlukaniswa phakathi kwama-antenna okudlulisa nokwamukela kunikeza isivikelo esengeziwe. Uma ama-transmitter nama-receiver ehlelwe ngendlela eqondile (okungukuthi: enye ingaphezulu kwenye, ngokuvamile i-antenna yokwamukela iphezulu kakhulu phezulu kombhoshongo), khona-ke ukuhlukaniswa okungaphezu kwama-50dB kufinyeleleka kalula.
Ngakho-ke ekuphetheni, ngezinhlelo zesiteshi esisodwa, qhubeka usebenzise i-duplexer. Kodwa ngezinhlelo zeziteshi eziningi, kuyilapho ama-antenna ahlukene ezobiza isikhala esiningi embhoshongweni ngamunye, lena inketho eqinile. Ivikela uhlelo lwakho kangcono ekuphazamisekeni okukhulu okuvela ekushintsheni kwe-passive ngenxa yalezo ziphazamiso ezincane kakhulu futhi ezinzima ukuzihlukanisa nokuhlanganiswa noma ukulungiswa.
I-UHF DuplexerIphrojekthi
Isisusa lapha ukusindisa ukufakwa kwekhebula ngaphakathi endlini.
Lapho yakhiwa, indlu yami yafakwa ngekhebula elilodwa le-coaxial drop kusuka phezulu kuya e-lounge, elifihlwe ngokucophelela odongeni lwe-cavity. Le khebula lithwala iziteshi ze-DVB TV kusukela ku-antenna yophahla kuya ku-TV e-lounge. Nginebhokisi le-TV yekhebula e-lounge engingathanda ukulisabalalisa endlini futhi i-amp yokusabalalisa ibekwa kahle e-loft ukuze kube lula ukufinyelela kuwo wonke amakamelo. Ngakho-ke, i-Duplexer kunoma iyiphi ingxenye yekhebula le-drop izoyivumela ukuthi ithwale i-DVB-TV phansi kwe-coax kanye ne-Cable-TV phezulu kwe-coax ngesikhathi esisodwa, uma nje ngikhetha i-Frequency efanelekile yokusatshalaliswa kwe-Cable-TV.
Ama-TV Multiplexes aqala ku-739MHz futhi anwebeka afike ku-800MHz. Ukusatshalaliswa kwe-Cable-TV kungahlelwa kusukela ku-471-860 MHz. Ngakho-ke ngizosebenzisa isigaba sokudlulisa okuphansi ukuze ngithwale i-CableTV phezulu nge-coax ku-~488MHz kanye nesigaba sokudlulisa okuphezulu ukuze ngithwale i-DVB-TV phansi. Ingxenye yokudlulisa okuphansi izophinde ithwale i-DC ukuze inike amandla i-amp yokusabalalisa esitezi esiphezulu kanye namakhodi okulawula okude e-Magic-eye abuyele ebhokisini le-Cable-TV.
Singakwazi futhi ukwenza ngokwezifiso i-Cavity Duplexer ngokwezidingo zakho. Ungangena ekhasini lokwenza ngokwezifiso ukuze unikeze imininingwane oyidingayo.
Isikhathi sokuthunyelwe: Septhemba-24-2022
