Yintoni naDuplexer?
I-duplexer sisixhobo esivumela unxibelelwano lwe-bi-directional phezu kwetshaneli enye. Kwiinkqubo zonxibelelwano zikanomathotholo, ibeka yedwa umamkeli kwisithumeli ngelixa ebavumela ukuba babelane nge-eriyali eqhelekileyo. Uninzi lweenkqubo zerediyo eziphindayo ziquka i-duplexer.
IiDuplex kufuneka:
Yenzelwe ukusebenza kwibhendi yefrikhwensi esetyenziswa ngumamkeli kunye nomthumeli kwaye kufuneka ikwazi ukuphatha amandla okuphuma komthumeli.
Ukubonelela ngokuchaswa okwaneleyo kwengxolo yothumelo eyenzeka ngexesha lokufumana, kwaye kufuneka ilungiselelwe ukusebenza, okanye ngaphantsi, ukwahlula amaza phakathi komthumeli kunye nomamkeli.
Nikeza ukubekwa wedwa okwaneleyo ukunqanda ukungevani kwamamkeli.
Diplexer vs Duplexer. Yintoni umahluko?
I-diplexer sisixhobo sokwenziwa esidibanisa amagalelo amabini kwimveliso eqhelekileyo. Iimpawu kwii-input 1 kunye ne-2 zihlala kwiibhendi zamaza ohlukeneyo. Ngenxa yoko, imiqondiso kwi-input 1 kunye ne-2 inokuhlalisana kwimveliso ngaphandle kokuphazamisana. Ikwabizwa ngokuba ngumhlanganisi webhendi yomnqamlezo. I-duplexer sisixhobo sokwenziwa esivumela unxibelelwano lwe-bi-directional (i-duplex) yothumelo kunye nokwamkela amaza phakathi kwebhanti enye kwindlela enye.
Iintlobo zeIiDuplexers
Kukho iindidi ezimbini ezisisiseko zeeduplexers: iBand Pass kunye neBand Reject.
I-eriyali eqhelekileyo ene-duplexer
Inzuzo ecacileyo yokusebenzisa i-duplexer kukuba sinokusasaza kwaye sifumane nge-eriyali enye kuphela. Ngesithuba kwiinqaba kwiindawo zesikhululo esisezantsi kwiprimiyamu, le yinzuzo yokwenyani.
Kwiinkqubo zesitishi esinye, apho kukho isidluliseli esinye kunye nomamkeli omnye, ukusetyenziswa kwe-duplexer ukuze babelane nge-eriyali eqhelekileyo lukhetho oluthe ngqo. Nangona kunjalo, xa iinkqubo ezininzi zeetshaneli ezineendlela ezininzi ezidibeneyo zokuhambisa kunye nokwamkela amajelo ziqwalaselwa, imeko iba nzima ngakumbi.
Eyona nto ingalunganga yokusebenzisa ii-duplexer kwiinkqubo ze-multichannel inokubonwa xa siqwalasela i-transmitter intermodulation. Oku kukuxutywa kweempawu zothumelo ezininzi kwi-eriyali.
Yahlula i-eriyali ye-Tx kunye ne-Rx
Ukuba sisebenzisa ukuhanjiswa okwahlukileyo kwaye sifumana ii-eriyali, kuthatha indawo enkulu kwinqaba.
Inzuzo enkulu kukuba, ngelixa i-passive intermodulation isenzeka ngendlela efanayo phakathi kweempawu ezithunyelwayo ezidityanisiweyo, akusekho indlela ethe ngqo yokuba ezi mveliso zifike.
umamkeli. Endaweni yoko, ukwahlukana phakathi kokuhambisa kunye nokufumana i-eriyali kunika ukhuseleko olongezelelweyo. Ukuba ii-eriyali ezithunyelwayo kunye nabamkeli zicwangciswe ngendlela ehambelanayo (okt: enye ngqo ngaphezulu kwenye, ngokubanzi nge-eriyali yokufumana iphezulu phezulu kwinqaba), ukwahlukaniswa okungaphezulu kwe-50dB kufikeleleka ngokulula.
Ke ekuqukumbeleni, kwiinkqubo zesitishi esinye, qhubeka kwaye usebenzise i-duplexer. Kodwa kwiinkqubo zeetshaneli ezininzi, ngelixa ii-eriyali ezahlukileyo ziya kukubiza indawo eninzi kwinqaba nganye, olu lolona khetho lomelele ngakumbi. Ikhusela isixokelelwano sakho ngcono kuphazamiso olubalulekileyo olusuka kunqunyanyiso lwemo yokwenziwa ngenxa yezo mpazamo zincinci kwaye kunzima ukwahlula udibaniso okanye ulungiso.
UHF DuplexerIprojekthi
Inkuthazo apha kukugcina ukufakwa kwentambo ngaphakathi kwekhaya.
Xa yakhiwa, indlu yam yafakwa ngentambo enye ye-coaxial yokuwa ukusuka kwindawo ephezulu ukuya kwigumbi lokuphumla, ifihlwe ngononophelo kudonga lomngxunya. Le ntambo ithwala iziteshi zeTV ze-DVB ukusuka kwi-eriyali yophahla ukuya kwi-TV kwindawo yokuphumla. Ndikwanayo nebhokisi yeTV ekwigumbi lokuphumla endingathanda ukuyisasaza endlwini kwaye i-amp yokuhambisa ibekwe kakuhle kwindawo ephezulu ukuze kufikeleleke lula kuwo onke amagumbi. Ke ngoko, i-Duplexer nakweyiphi na isiphelo sentambo yokulahla iya kuyivumela ukuba ithwale i-DVB-TV phantsi kwe-coax kunye ne-Cable-TV inyuse i-coax ngaxeshanye, ukubonelela ukuba ndikhethe i-Frequency efanelekileyo yokusasazwa kwe-Cable-TV.
IiMultiplexes zikamabonwakude ziqala kwi-739MHz kwaye zanda ukuya kuthi ga kwi-800MHz. Ukuhanjiswa kweCable-TV kucwangciswe ukusuka kwi-471-860 MHz. Ngaloo ndlela ndiya kuphumeza icandelo lokupasa eliphantsi ukuthwala i-CableTV phezulu kwi-coax kwi- ~ 488MHz kunye necandelo lokupasa okuphezulu ukuthwala i-DVB-TV phantsi. Icandelo lokupasa eliphantsi liya kuphinda liphathe i-DC ukunika amandla i-amp yokuhambisa kwindawo ephezulu kunye ne-Magic-eye remote control codes emva kwebhokisi ye-Cable-TV.
Sinokwenza ngokwezifiso iCavity Duplexer ngokweemfuno zakho. Ungangenisa iphepha lokulungiselela ukubonelela ngeenkcukacha ozifunayo.
Ixesha lokuposa: Sep-24-2022
