Yini aI-Duplexer?
I-duplexer iyithuluzi elivumela ukuxhumana okukabili ngesiteshi esisodwa. Ezinhlelweni zokuxhumana zomsakazo, ihlukanisa umamukeli kumthumeli ngenkathi ibavumela ukuthi babelane ngothi olufanayo. Amasistimu amaningi wokuphinda umsakazo afaka i-duplexer.
Ama-Duplexer kufanele:
Idizayinelwe ukusebenza kubhendi yefrikhwensi esetshenziswa umamukeli nesidlulisi futhi kufanele ikwazi ukuphatha amandla okukhiphayo wesidluliseli.
Nikeza ukwenqatshwa okwanele komsindo wesithumeli esivela emvamisa yokwamukela, futhi kufanele yakhelwe ukusebenza, noma ngaphansi, ngokuhlukaniswa kwamafrikhwensi phakathi komthumeli nomamukeli.
Nikeza ukuhlukaniswa okwanele ukuze uvimbele ukungezwani komamukeli.
I-Diplexer vs Duplexer. Uyini umehluko?
I-diplexer iyithuluzi lokwenziwa elihlanganisa okokufaka okubili kube okokukhiphayo okufanayo. Amasignali kokokufaka 1 no-2 athatha amabhendi efrikhwensi ahlukene. Ngakho-ke, amasiginali kokokufaka 1 no-2 angahlala ndawonye ekuphumeni ngaphandle kokuphazamisana. Yaziwa nangokuthi isihlanganisi se-cross band. I-duplexer iyithuluzi lokwenziwa elivumela ukuxhumana kwe-bi-directional (duplex) kokudlulisa nokwamukela amaza ngaphakathi kwebhendi efanayo kumzila owodwa.
Izinhlobo zeAma-Duplexers
Kunezinhlobo ezimbili eziyisisekelo zama-duplexer: I-Band Pass kanye ne-Band Reject.
I-antenna evamile ene-duplexer
Inzuzo esobala yokusebenzisa i-duplexer ukuthi singadlulisela futhi samukele ngothi olulodwa kuphela. Njengoba kunesikhala emibhoshongweni kumasayithi eziteshi eziyisisekelo ngemali ekhokhwayo, lokhu kuyinzuzo yangempela.
Ezinhlelweni zesiteshi esisodwa, lapho kukhona isidlulisi esisodwa kanye nomamukeli oyedwa, ukusetshenziswa kwe-duplexer ukuze bakwazi ukwabelana ngothi olujwayelekile kuyisinqumo esiqondile. Kodwa-ke, lapho kucatshangelwa amasistimu eziteshi eziningi ezinamashaneli amaningana okuthumela nokwamukelayo ahlanganisiwe, isimo siba nzima kakhulu.
Ububi obukhulu bokusebenzisa ama-duplexer ezinhlelweni zamashaneli amaningi kungabonakala uma sicubungula ukunqanyulwa kwe-transmitter. Lokhu ukuxutshwa kwezimpawu zokudlulisa eziningi othini.
Hlukanisa izinti ze-Tx ne-Rx
Uma sisebenzisa ama-transmit ahlukene futhi samukela izimpondo, kuthatha isikhala esengeziwe embhoshongweni.
Inzuzo enkulu ukuthi, nakuba i-passive intermodulation isenzeka ngendlela efanayo phakathi kwamasignali athunyelwayo ahlanganisiwe, ayisekho indlela eqondile yokuthi le mikhiqizo ifinyelele.
umamukeli. Esikhundleni salokho, ukuhlukaniswa phakathi kwama-antenna okudlulisa nokwamukela kunikeza ukuvikeleka okwengeziwe. Uma ama-transmitters nabamukeli bahlelwa ngendlela ehambisanayo (okungukuthi: eyodwa iqonde phezulu kwenye, ngokuvamile enothi olutholayo oluphakeme kakhulu phezulu kombhoshongo), khona-ke ukuhlukaniswa okungaphezu kuka-50dB kufinyeleleka kalula.
Ngakho-ke ekuphetheni, kumasistimu wesiteshi esisodwa, qhubeka usebenzise i-duplexer. Kodwa ezinhlelweni zamashaneli amaningi, kuyilapho izimpondo ezihlukene zizokubiza isikhala esengeziwe kumbhoshongo ngamunye, lena inketho ekwazi ukumelana nokuqina. Ivikela isistimu yakho kangcono ekuphazanyisweni okubalulekile okuvela ekungeneni kwezwi ngenxa yalawo maphutha amancane kakhulu futhi okunzima ukuwahlukanisa.
I-UHF DuplexerIphrojekthi
Isisusa lapha siwukulondoloza ukufakwa kwentambo ngaphakathi kwekhaya.
Lapho yakhiwe, indlu yami yafakwa ngentambo eyodwa yokudonsa i-coaxial ukusuka phezulu kuya endlini yokuphumula, ifihlwe ngokucophelela odongeni lomgodi. Le ntambo ithwala iziteshi ze-DVB TV isuka othini ophahleni iye ku-TV esendlini yokuphumula. Futhi nginebhokisi le-TV yekhebula egumbini lokuphumula engingathanda ukulisabalalisa endlini yonke futhi i-amp yokusabalalisa ibekwe kahle endaweni ephezulu ukuze kufinyeleleke kalula kuwo wonke amagumbi. Ngakho-ke, i-Duplexer kunoma ikuphi ukuphela kwentambo yokudonsa izoyivumela ukuthi ithwale i-DVB-TV yehle nge-coax kanye ne-Cable-TV inyuse i-coax ngesikhathi esisodwa, inqobo nje uma ngikhetha I-Frequency efanelekile yokusabalalisa i-Cable-TV.
Ama-Multiplexes we-TV aqala ku-739MHz futhi anwebe afinyelele ku-800MHz. Ukusabalalisa kwe-Cable-TV kuyahleleka kusuka ku-471-860 MHz. Ngakho ngizosebenzisa isigaba samaphasi aphansi ukuze ngithwale i-CableTV nginyuse i-coax ku-~488MHz kanye nesigaba sokudlula okuphezulu ukuze ngihlise i-DVB-TV. Ingxenye yokudlula ephansi izophinde iphathe i-DC ukuze inike amandla i-amp yokusabalalisa endaweni ephezulu kanye namakhodi okulawula okukude e-Magic-eye ibuyisele phansi ibhokisi le-Cable-TV.
Singakwazi futhi ukwenza ngokwezifiso i-Cavity Duplexer ngokwezidingo zakho. Ungafaka ikhasi lokwenza ngokwezifiso ukuze unikeze imininingwane oyidingayo.
Isikhathi sokuthumela: Sep-24-2022
