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Ukukhetha intambo ye-coaxial efanelekileyo kubalulekile ekugcineni ukuthembeka kwesignali kwiinethiwekhi ze-telecom kunye nee-wireless. Intambo ye-coaxial ine-conductor esembindini, i-dielectric, i-shielding, kunye nejakethi yangaphandle, ukuqinisekisa ukuhanjiswa kwesignali okugqwesileyo. Intambo ye-Feeder yeTelsto inika ukusebenza okuthembekileyo kunye nokuqina kwizicelo ezifuna amandla.
- Umgangatho wesignali kunye nokuthembeka kwenkqubo kuxhomekeke ekukhethweni ngokufanelekileyo kwentambo ye-coaxial.
Iziseko zeCable Coaxial
Yintoni iCoaxial Cable?
Intambo ye-coaxial yintambo ekhethekileyo eyenzelwe ukuhanjiswa kwesignali ngokufanelekileyo. Inesakhiwo esahlukileyo esivumela ukuba ithwale idatha, ividiyo, kunye nemiqondiso yesandi ngaphandle kokuphazamiseka okukhulu. Uyilo lwentambo ye-coaxial luquka iileya ezininzi, nganye isebenzela injongo eyahlukileyo. Umqhubi osembindini udlulisela isignali, ngelixa i-dielectric insulator igcina umqhubi wahlulwe kwisikhuselo. I-mesh yobhedu eboyiweyo isebenza njengekhaka ngokuchasene nokuphazamiseka kwe-electromagnetic, kwaye uqweqwe lweplastiki lukhusela intambo ekonakalisweni komzimba. Itheyibhile engezantsi ichaza izinto eziphambili zesakhiwo kunye nemisebenzi yazo:
| Umaleko | Umsebenzi |
|---|---|
| Umqhubi wesikhungo | Ithwala idatha kunye nevidiyo ngentambo yobhedu. |
| Isigqubuthelo seplastiki seDielectric | Ibonelela ngobushushu kwaye igcina umgama phakathi kombindi kunye noweya wangaphandle. |
| Umnatha wobhedu osontiweyo | Ikhusela intambo kwi-electromagnetic interference (EMI). |
| Ukwaleka ngeplastiki | Ikhusela iileya zangaphakathi ekonakalisweni ngokwasemzimbeni. |
Iintambo zeCoaxial zisetyenziswa kakhulu kuba ulwakhiwo lwazo luqinisekisa ukusebenza okuthembekileyo kwiindawo ezahlukeneyo.
Indima kwiTelecom nakwiiNethiwekhi ezingenazingcingo
Intambo ye-coaxial idlala indima ebalulekileyo kunxibelelwano kunye nezicelo zenethiwekhi ezingenazingcingo. Ixhasa ukudluliselwa kwedatha ngesantya esiphezulu kunye nomgangatho wesignali ozinzileyo. Olu luhlu lulandelayo lubonisa ezona zicelo zixhaphakileyo zeentambo ze-coaxial:
1. I-Cable Television (CATV) kunye ne-Satellite TV
2. Uqhagamshelo lwe-Intanethi oluKhawulezayo
3. Iinkqubo zeCCTV kunye noKhuseleko
4. Ukusasazwa komsindo kunye nevidiyo ngobuchwephesha
5. Uthungelwano lwasekhaya (iTekhnoloji yeMoCA)
6. Iziseko zoNxibelelwano ezingenazingcingo
7. Ukudibanisa Izixhobo zeKhaya ezikrelekrele
Iintambo ze-coaxial zidibanisa ii-antenna, izitishi zesiseko, kunye nezixhobo, nto leyo ezenza zibe yimfuneko kwiinkqubo zonxibelelwano zanamhlanje. Ukuqina kwazo kunye nokukwazi kwazo ukuzikhusela kunceda ukugcina ukuthembeka kwesignali kuzo zombini iinkqubo zangaphakathi nangaphandle.
Izixhobo zeCoaxial Cable
Umqhubi Weziko kunye neDielectric
Umqhubi osembindini wenza umongo wentambo ye-coaxial. Uthwala isignali kwaye umisela ukusebenza kombane kwentambo. Abavelisi basebenzisa izixhobo ezahlukeneyo kwi-coaxial kunye ne-dielectric ukuphucula ukuhanjiswa kwesignali kunye nokunciphisa ukuncitshiswa. Itheyibhile engezantsi ibonisa izixhobo eziqhelekileyo kunye nefuthe lazo ekusebenzeni kwentambo ye-coaxial:
| Uhlobo lwezinto | Inkcazo | Impembelelo yokusebenza |
|---|---|---|
| Ubhedu oluqinileyo | Isetyenziselwa abaqhubi beziko, iyasebenza ekudluliseni isignali. | Ichaphazela ngokuthe ngqo amandla esignali kunye nokucaca kwayo. |
| Intsimbi Egqunywe Ngobhedu | Inciphisa iindleko ngelixa igcina ukuhanjiswa kombane. | Ichaphazela ukuguquguquka nokusebenza rhoqo kwiindawo eziphezulu. |
| I-Polyethylene Eqinileyo (PE) | I-insulator eqhelekileyo ye-dielectric kwiintambo ezinciphisa ilahleko. | Igcina isithuba, inciphisa ukulahleka kwesiginali. |
| I-Polyethylene Foam | Ivumela abaqhubi abakhulu, inciphisa ukulahleka kwesiginali kodwa ifunxa umswakama. | Ingaphucula ukusebenza kodwa ingazisa iingozi. |
| I-Polytetrafluoroethylene (PTFE) | Izinto ezisemgangathweni ophezulu, ezingasebenzisi lahleko ingako kwiintambo zexabiso eliphezulu. | Inciphisa ilahleko ze-dielectric, iphucula ukusebenza. |
Iintambo zeCoaxial ezinee-conductors zobhedu oluqinileyozibonelela ngokucaca okuqinileyo kwesignali. Iipolyethylene kunye neePTFE dielectrics zinceda ekunciphiseni ukuxinana, nto leyo eyenza ezi ntambo zilungele ukusetyenziswa kweefowuni kunye neefowuni ezingenazingcingo.
Isikhuselo kunye neJacket yangaphandle
Isikhuselo sikhusela intambo ye-coaxial ekuphazamisekeni kwe-electromagnetic. Ijakethi yangaphandle yongeza amandla oomatshini kunye nokumelana nokusingqongileyo. Ezi zinto zidlala indima ebalulekileyo ekugcineni ukuthembeka kwesignali kunye nokuqina kwayo.
• Izinto zokukhusela, ezifana nobhedu olulukiweyo okanye intsimbi engagqwaliyo, ziphucula ukumelana nokutyumzeka kwaye zinciphisa ukuthomalaliswa.
• Iijakethi zangaphandle ezenziwe ngeplastiki eqinileyo zinceda iintambo ze-coaxial ukuba zikwazi ukumelana neemeko ezinzima, kuquka ukufuma kunye nokukhanya kwe-UV.
• Ukukhethwa ngokufanelekileyo kwezinto zokukhusela kunye nezejakethi kuqinisekisa ukusebenza okuthembekileyo kuzo zombini iinkqubo zekhebula zangaphakathi nangaphandle.
Icebiso: Ukukhetha intambo ye-coaxial eneukhuselo olusemgangathweni ophezulukwaye ijakethi eqinileyo inceda ukugcina umgangatho wesignali kwaye yandisa ubomi bekhebula.
Iintlobo zeCoaxial Cable kunye nezicelo
Uthotho lwe-RG kunye ne-LMR
Iinethiwekhi zeTelecom kunye neenethiwekhi ezingenazingcingo zixhomekeke kwiintlobo ezahlukeneyo zeentambo ze-coaxial ukuze zidlulisele isignali. Iintambo ze-RG series, ezifana ne-RG213, bezisetyenziswa kakhulu amashumi eminyaka. Iintambo ze-LMR series, ezifana ne-LMR400, zimele ukuqhubela phambili kwanamhlanje kubuchwepheshe beentambo ze-coaxial. Itheyibhile engezantsi ithelekisa iimpawu eziphambili:
| Uphawu | RG213 | I-LMR400 |
|---|---|---|
| Ukunciphisa amandla kwi-1 GHz | ~19.0 dB/100m | ~9.0 dB/100m |
| Uluhlu oluPhezulu lweeFrequency | ~1 GHz | Ukuya kuthi ga kwi-6 GHz |
| Ukuphatha Amandla | 1.5 kW | 1.8 kW |
| Ukukhusela | I-Double Braid | Ifoyile + I-Braid |
| Ukulahleka kokubuya | Iphakathi | Igqwesile |
| Ubungakanani bomthamo | 101 pF/m | 78.4 pF/m |
Iintambo ze-LMR400 zinika ukuncipha okuncinci kunye nokukhusela okuphezulu, okwenza ukuba zilungele ukusetyenziswa rhoqo kakhulu, umgama omde. Iintambo ze-RG213 zibonelela ngokuguquguquka kunye nokuthembeka kwiintambo eziphantsi, ezimfutshane ukuya kweziphakathi.
Ulwakhiwo lwe-LMR400 lubonelela ngokhuseleko oluphuculweyo lwe-EMI kunye nokuthembeka kwesignali, okuxhasa iimeko zonxibelelwano ezifuna amandla.
Isishwankathelo seCable yeTelsto Feeder
Intambo yeTelsto feederIgqamile kushishino ngeemodeli ezifana ne-LMR300, i-LMR400, i-TEL500, i-TEL600, kunye ne-TEL900. Ezi ntambo ze-coaxial zisebenza ngeendlela ezahlukeneyo:
• Iziseko zophuhliso lweselula: Ukudibanisa ii-eriyali kwizixhobo ze-RF ze-4G LTE kunye ne-5G.
• I-Wi-Fi kunye ne-LAN engenazingcingo: Iintambo ze-feeder zeendawo zokufikelela kunye neenkqubo ze-antenna ezisasazwe.
• Unxibelelwano lwe-GPS kunye nesathelayithi: Unxibelelwano oluthembekileyo lwexesha kunye nesitishi somhlaba.
• Irediyo eneendlela ezimbini kunye nokhuseleko loluntu: Isetyenziswa kwiinkqubo zerediyo eziphathwayo zomhlaba.
• Ukusasaza: Ukusasaza imiqondiso yerediyo kunye nethelevishini.
• Umkhosi kunye neenqwelo-moya: Uqhagamshelo lwe-RF olulula noluthembekileyo.
• Uvavanyo kunye nokulinganisa: Useto lwelebhu kunye novavanyo lwasentsimini.
Iimodeli zekhebula ze-coaxial zeTelsto zidibanisa ukuqina kunye nokuguquguquka, ziqinisekisa ukuhanjiswa kwesignali ngokufanelekileyo kuzo zombini izinto zangaphakathi nangaphandle.
Iintambo eziqinileyo nezincinci zeCoaxial
Iintambo ze-coaxial eziqinileyo zinokumelana okuzinzileyo kunye nokukhusela okugqwesileyo. Ezi ntambo zilungele iinkqubo ze-microwave kunye ne-millimeter-wave, kubandakanya izixhobo ze-aerospace, i-radar, kunye nezixhobo zelebhu. Iintambo ze-micro-coaxial, ezinobubanzi obungaphantsi kwe-1 mm, zilingana neendawo ezixineneyo ezifana nezixhobo zonyango, i-radar yemoto, kunye ne-elektroniki ephathekayo. Izihlanganisi ezichanekileyo kunye nolawulo lwe-radius yokugoba ngononophelo zibalulekile kwezi ntlobo zeentambo ze-coaxial.
Ukukhetha intambo ye-coaxial efanelekileyo kwisicelo ngasinye kuqinisekisa ukusebenza kakuhle kwesiginali kunye nokuthembeka kuzo zonke iinkqubo ezahlukeneyo zenethiwekhi ye-telecom kunye ne-wireless.
Iikhrayitheriya zoKhetho lweCable Coaxial
Ukukhetha intambo ye-coaxial efanelekileyo kubalulekile ekugcineni umgangatho wesignali kunye nokudluliselwa okuthembekileyo kwiinkonzo zonxibelelwano kunye nenethiwekhi engenazingcingo. Inkqubo nganye ineemfuno ezizodwa, ngoko ke ukufanisa iinkcukacha zentambo nesicelo esicetywayo kuqinisekisa ukusebenza kakuhle kunye nokuqina kwexesha elide.
Impedance kunye noLuhlu lweeFrequency
Impedance yinto ebalulekileyo kwindlela esebenza ngayo intambo ye-coaxial. Ilinganisa ukumelana nokuhamba kwesignali ngaphakathi kwintambo. Amaxabiso e-impedance aqhelekileyo kwiintambo ze-coaxial yi-50 ohms kunye ne-75 ohms. La maxabiso awakhethi. Alungiselelwe ukusetyenziswa okuhlukeneyo:
• I-50 ohms iyinto eqhelekileyo kunxibelelwano lwerediyo kunye neenethiwekhi ezingenazingcingo.
• Ii-ohms ezingama-75 zikhethwa kwiinkqubo zokusasaza ividiyo kunye nokusasaza.
Ukuthelekisa i-impedance yentambo nezixhobo eziqhagamshelweyo kuthintela ukonakala kwesiginali. Ukungafani kunokubangela ukubonakaliswa, okukhokelela kwimiba efana nokubonakala kwe-ghosting kwizikrini zikamabonwakude okanye ukulahleka kwepakethi yedatha kunxibelelwano lwe-intanethi. Kwiimeko ezinzima, kunokonakalisa ne-elektroniki ebuthathaka.
Ukuhambelana koluhlu lweefrikhwensi nako kubalulekile. Intambo nganye ye-coaxial ixhasa uluhlu oluthile lweefrikhwensi. Ukusebenzisa intambo engaphandle koluhlu lwayo olulinganisiweyo kunciphisa ukusebenza kwaye kunokubangela ukulahleka kwesiginali. Intambo kunye nezihlanganisi zayo kufuneka zombini zixhase ifrikhwensi efunekayo kwisicelo. Umzekelo:
• Izitishi zesiseko seeselula kunye neenethiwekhi ze-Wi-Fi zihlala zifuna iintambo ezilawula amaza omoya ukuya kuthi ga kwi-6 GHz.
• Iintambo ezisebenzisa amaza asezantsi zinokwanela kwiinkqubo zemveli zethelevishini okanye zerediyo.
Ukukhetha i-impedance echanekileyo kunye nobubanzi befrikhwensi kuqinisekisa ukuhanjiswa kwesignali ngokufanelekileyo kwaye kuthintela iingxaki zenethiwekhi ezibizayo.
Ukuncipha kunye nokulahleka kweSignali
Ukuncitshiswa kubhekisa ekunciphiseni amandla esignali njengoko ihamba kwintambo. Oku kulahleka kuyanda ngobude bentambo, ukuphindaphinda, kunye nomgangatho ophantsi wezinto ezibonakalayo. Ukuqonda indlela esebenza ngayo intambo ye-coaxial kunceda ukuchaza isizathu sokuba ukuncitshiswa kubalulekile. Okukhona intambo inde, kokukhona isignali iba buthathaka. Ukuncitshiswa okuphezulu kunokubangela ukuhanjiswa kwedatha okungalunganga kunye nokufikelela okuncinci kwi-intanethi nakwiinkqubo ezingenazingcingo.
Zininzi izinto ezibangela ukulahleka kwesiginali:
• Ukulahleka kokuxhathisa okuvela kumqhubi
• Ukulahleka kwe-dielectric ngenxa yokufakwa kwe-insulation
• Ukulahleka okungafaniyo ngenxa yoqhagamshelo olungafanelekanga
• Ukulahleka kokuvuza, ingakumbi kwiintambo ezikumgangatho ophantsi kwiifrikhwensi eziphezulu
Itheyibhile engezantsi ibonisa amazinga aqhelekileyo okuthomalalisa amandla kwiintlobo zekhebula ze-coaxial eziqhelekileyo kwi-750 MHz:
| Uhlobo | Impedance (ohms) | Ukunciphisa okuphezulu, 750 MHz (dB/100 ft) |
|---|---|---|
| RG-6 | 75 | 5.65 |
| RG-7 | 75 | 4.57 |
| RG-8/U | 50 | 5.97 |
| RG-8X | 50 | 10.95 |
| RG-11/U | 75 | 3.65 |
| RG-58/U | 50 | 13.10 |
| RG-59/U | 75 | 9.71 |
| RG-59A/U | 75 | 8.9 |
| RG-214/U | 50 | 6.7 |
| RG-218 | 50 | 2.83 |
| RG-223/U | 50 | 11.46 |
| RG-316/U | 50 | 22.45 |
| RG-400/U | 50 | 12.57 |
| RG-405/U | 50 | 46.0 |
Xa ukhetha intambo ye-coaxial, cinga ngobude bentambo obufunekayo kunye nenqanaba elamkelekileyo lokuncitshiswa kwenkqubo yakho.Iintambo ze-feeder zeTelsto, ezifana ne-LMR400 kunye ne-TEL600, zenzelwe ukunciphisa ubushushu, nto leyo ezenza ukuba zilungele ukusetyenziswa ixesha elide kunye nokusetyenziswa rhoqo.
Icebiso: Ukuze ufumane iintambo ze-coaxial ezilungileyo kwiindawo ezibalulekileyo zokufakelwa, khetha iimodeli ezine-attenuation ephantsi kunye nezixhobo ezikumgangatho ophezulu ukuze ugcine umgangatho wesignali kumgama omde.
Izinto zokukhusela kunye neemeko zokusingqongileyo
Ukukhusela yenye into ebalulekileyo kwiingenelo zekhebula le-coaxial. Umaleko wokukhusela uthintela ukuphazamiseka kwe-electromagnetic yangaphandle (i-EMI) kunye nokuphazamiseka kwerediyo (i-RFI), ukhusela isignali ngexesha lokudluliselwa. Iintlobo zokukhusela ziquka ukugquma, i-foil, i-double braid, kunye ne-quad-shield. Iileya ezininzi zibonelela ngokumelana okungcono kwe-EMI kodwa zinokunyusa ubukhulu kunye nokuqina kwekhebula.
• Izikhuselo ze-braid kunye ne-foil zixhaphakile kwiifowuni ezininzi kunye ne-intanethi.
• Iintambo ezine-quad-shield zibonelela ngokhuseleko oluphezulu kwiindawo ezinengxolo ephezulu ye-elektroniki.
Izinto ezingqongileyo nazo zidlala indima ebalulekileyo ekukhetheni iintambo. Ukufuma, ukugqwala, kunye nemitha ye-UV zingonakalisa izinto zentambo. Ukufuma okuphezulu kunokuvumela ukufuma ukuba kungene kwi-insulation, kunciphisa amandla e-dielectric kwaye kwandise umngcipheko weesekethe ezimfutshane. Ukugqwala kunokunyusa ukumelana nombane, ngelixa ukuchatshazelwa yi-UV kunokwenza i-insulation ibe buthathaka kwaye iveze ii-conductors.
Kwizinto zokufakelwa ngaphandle, khetha iintambo ze-coaxial ezineejakethi zangaphandle eziqinileyo kunye nokukhusela okuphucukileyo. Iintambo ze-feeder zeTelsto zenzelwe ukumelana neemeko ezinzima, ukuqinisekisa ukusebenza okuthembekileyo kwiindawo zangaphakathi nangaphandle.
Ukuhambelana kwekhonkco kunye nokuhlanganiswa
Ukuhambelana kwesixhumi kubalulekile ekudlulisweni kwesignali okuzinzileyo kunye nokuthembeka kwexesha elide. Iintlobo zesixhumi eziqhelekileyo kwiinethiwekhi zonxibelelwano kunye neentambo ziquka:
• I-BNC:Isetyenziselwa izixhobo zeRF kunye neempawu zevidiyo ezingaphantsi kwe-4 GHz.
• Uhlobo lwe-F:Ilungele umabonwakude ohamba emoyeni kunye nemiqondiso yeRF yokuhlala.
• Uhlobo lwe-N:Ifanelekile kwiinkonzo zorhwebo ezinoluhlu olubanzi lweefrikhwensi.
• I-SMB:Ithandwa kakhulu kwizixhobo zoshishino kunye nezonxibelelwano.
• 7/16 I-DIN:Isetyenziswa kwiitransmission zenethiwekhi yeselula ezisebenzisa amandla aphezulu.
• I-QMA:Izihlanganisi ezitshixwa ngokukhawuleza ezisetyenziselwa imisebenzi yemizi-mveliso kunye nonxibelelwano.
Izihlanganisi ezithembekileyo zigcina amandla esignali kwaye zinciphisa ukuphazamiseka. Ukukhethwa kakubi kwesihlanganisi okanye ukuhlanganiswa okungafanelekanga kunokubangela ukulahleka kwesignali, ukusebenza okungahambelaniyo, kunye nokusilela kwenkqubo. Izihlanganisi ezisemgangathweni ophezulu zibonelela ngothumelo oluzinzileyo, ukufakwa lula, kunye nokuhambelana neenkqubo ezahlukeneyo zeRF kunye nonxibelelwano.
Qaphela: Soloko ufanisa uhlobo lwesixhumi nentambo kunye nokusetyenziswa kwayo. Ukuhlanganiswa kakuhle kuqinisekisa iingenelo ezipheleleyo zotyalo-mali lwakho lwentambo ye-coaxial.
Ukuhlanganiswa kunye nokufakwa kweCable Coaxial
Ukukhetha iNdibano Efanelekileyo
Ukukhetha i-coaxial cable assembly efanelekileyo kubalulekile kwiinethiwekhi ze-telecom kunye nee-wireless ezisebenza kakuhle. Inkqubo ye-assembly ichaphazela umgangatho wesignali, ukuqina, kunye nokuthembeka kwenkqubo iyonke. Qala ngokuqokelela zonke izixhobo ezifunekayo kwaye uchonge uhlobo oluthile lwentambo yesicelo sakho. Coca kwaye womise zombini iziphelo zentambo ngaphambi kokuba ukhulule ijakethi, isihlangu, kunye ne-dielectric ukuya kubude obufunekayo. Songa i-braid kakuhle ukuze ugcine isikhuselo esisebenzayo. Faka intambo kwi-connector ide ifikelele kwindawo yangaphakathi. Sebenzisa isixhobo sokucinezela ukugoba i-sleeve ngokulinganayo, uqinisekise ukuba ilingana kakuhle. Gcoba izihlanganisi kwaye, ukuba kuyimfuneko, udibanise iphini ngononophelo. I-solder egqithisileyo okanye indlela engafanelekanga inokubangela ukungafani kwe-impedance, ukunciphisa ukusebenza kakuhle kwe-rf coaxial cable assembly. Soloko ujonga ukuba iyasebenza na kwaye utywine ngokufanelekileyo ukuthintela ukulahleka kwesignali.
I-coaxial cable assembly eyenziwe kakuhle inciphisa ukulahleka kwedatha, ukuphazamiseka, kunye nengxolo. I-assembly esemgangathweni ophezulu iqinisekisa ukuhanjiswa kwesignali rhoqo, ukhuseleko oluqinileyo, kunye nokusebenza okuhlala ixesha elide, nokuba kwiimeko ezinzima. I-assembly embi inokukhokelela ekusebenzeni okuphantsi, isantya esicothayo se-intanethi, kunye nokubambezeleka okwandileyo.
Iindlela ezilungileyo zokufaka
Ukufakwa ngokufanelekileyo kwee-coaxial cable assemblies kwandisa ubomi benkqubo kwaye kugcina ukuthembeka kwesignali. Kuphephe ukugoba okanye ukujika okubukhali ngexesha lokuhambisa, njengoko oku kungonakalisa intambo kwaye konakalise ukhuseleko. Sebenzisa ii-cable clips okanye izibophelelo ukuqinisa intambo kwaye ugcine indlela igudile. Qinisekisa ukuba zonke izihlanganisi ziqinile kwaye zilungelelaniswe ngokufanelekileyo. Khetha ubude bentambo kunye negeyiji efanelekileyo ukunciphisa ukonakala kwesignali. Kwixesha elide, cinga ngokusebenzisa ii-boosters okanye ii-cell phone signal boosters ukugcina amandla esignali. Ukubeka isiseko esifanelekileyo kuyimfuneko ukuthintela ukuphazamiseka. Uqhagamshelo olukhuselekileyo lubalulekile, njengoko ukusilela kube kanye kunokuphazamisa inethiwekhi yonke.Ukufakelwa kwentambo ye-coaxialkwiindawo ezingenazingcingo zihlala zijongene nemingeni efana nokuguquguquka okuncinci kunye neendleko eziphezulu zomgama omde, nto leyo eyenza ucwangciso olucokisekileyo lube yimfuneko.
Icebiso: Ukulandela iindlela ezilungileyo zokuhlanganisa nokufakela iintambo ze-coaxial kunceda ukuqinisekisa ukusebenza okuthembekileyo kwaye kunciphisa isidingo sokulungiswa okubizayo okanye ii-boosters.
Uluhlu Lokujonga Uthelekiso Lweentambo ZeCoaxial
Itheyibhile yokubhekisa ngokukhawuleza
Ukukhetha ekuneneintambo ye-coaxialKwizicelo ze-telecom kunye ne-wireless networking, iingcali kufuneka zihlole iindlela ezahlukeneyo ukuqinisekisa ukusebenza kakuhle kunye nokuthembeka. Olu luhlu lungezantsi lunceda ekwenzeni lula inkqubo yokuthelekisa:
• Ukusetyenziswa okucetywayo: Chonga ukuba intambo yeyokusebenzisa i-intanethi, umabonwakude, unomathotholo, okanye ezinye iinkqubo zonxibelelwano.
• Uhlobo lwesignali: Fumana ukuba uthumelo luyi-analog, lwedijithali, okanye ludityaniswe.
• Amanqanaba okuphazamiseka: Vavanya imeko-bume yokuphazamiseka kwe-electromagnetic kwaye ukhethe isikhuselo esifanelekileyo.
• Umgama: Linganisa ubude obumele buhanjwe sisignali uze ukhethe intambo egcina amandla.
• Amandla nokucaca: Khetha intambo ye-coaxial egcina ukuthembeka kwesignali ngaphandle kokuphazamiseka okukhulu.
• Ukumelana nokuphazamiseka: Khetha iintambo ezinesikhuselo esiphucukileyo ukuze unciphise i-EMI kunye ne-RFI.
• Impedance: Tshatisa i-impedance yentambo nezixhobo eziqhagamshelweyo ukuze udlulise isignali ngendlela efanelekileyo.
• Ubude bekhebula: Ukubaleka ixesha elide kufuna iikhebula ezinesikhuselo esingcono kunye nokuncipha okuncinci.
• Ukulahleka kwesignali: Hlola iinkcukacha zokunciphisa umbane ukuze uxhase amandla esignali afunekayo.
• Indawo engqongileyo: Hlalutya iimeko zokufakelwa; iintambo zangaphandle zifuna iijakethi eziqinileyo.
• Ukuguquguquka: Khetha phakathi kweentambo ze-coaxial eziqinileyo neziguquguqukayo ngokusekelwe kwiimfuno zokufakelwa.
Icebiso: Uluhlu olupheleleyo lokuhlola luqinisekisa ukuba intambo ye-coaxial iyahlangabezana nazo zonke iimfuno zobugcisa nezokusingqongileyo kwiinkqubo zonxibelelwano kunye neengcingo.
Le theyibhile ingezantsi inika isalathiso esifutshane sokuthelekisa ukhetho lwentambo ye-coaxial ye-RG kunye ne-LMR:
| Inkcazo | Iintambo zeCoaxial zeRG | Iintambo zeCoaxial ze-LMR |
|---|---|---|
| Ukunciphisa | Iphantsi | Isezantsi kakhulu |
| Ukuguquguquka | Iphakathi | Phezulu |
| Iintlobo zoQhagamshelo | F, BNC | N, SMA |
Le theyibhile yokuthelekisa inceda iingcali ekuchongeni ngokukhawuleza intambo ye-coaxial efanelekileyo kwiiprojekthi zazo zothungelwano. Ukukhusela ngokufanelekileyo, ukungakwazi ukuthintela, kunye nokulinganisa ukuncitshiswa kubalulekile ekugcineni umgangatho wesiginali kunye nokuthembeka kwenkqubo.
• Thelekisa i-impedance, uluhlu lwamaza, kunye nokukhusela kwiimfuno zenkqubo yakho xa ukhetha intambo ye-coaxial.
• Khetha iintambo ezithambileyo kwaye zakhiwe ngokuqinileyo ukuze zisebenze ngokuthembekileyo.
• Khetha iimpawu ezidumileyo ezifana neTelsto ngenxa yomgangatho kunye nokuqina.
Nxibelelana nemithombo yobugcisa okanye iingcali zoshishino ukuqinisekisa ukuba isisombululo se-coaxial singcono kakhulu kwisicelo sakho.
FAQ
Yeyiphi intambo ye-coaxial ecetyiswayo yokufakelwa kwe-telecom yangaphandle?
Intambo yeTelsto feederIimodeli, ezifana ne-LMR400 kunye ne-TEL600, zibonelela ngeejakethi eziqinileyo kunye nokukhusela okuphucukileyo. Ezi ntambo zimelana nokufuma, ukuvezwa yi-UV, kunye neemeko zokusingqongileyo ezinzima.
Ndingayichonga njani i-impedance echanekileyo yesicelo sam?
• Chonga iimfuno zenkqubo yakho.
• Iinethiwekhi ezingenazingcingo kunye nonxibelelwano lwe-RF zihlala zisebenzisa iintambo ze-50-ohm.
• Iinkqubo zevidiyo kunye nosasazo zihlala zifuna iintambo ze-75-ohm.
Ngaba iTelsto Feeder Cable inokuxhasa iinethiwekhi ezingenazingcingo ezisebenzisa i-high-frequency?
Ewe. Iimodeli zeTelsto Feeder Cable ziphatha amaza afikelela kwi-6 GHz, nto leyo eyenza zifaneleke kwiinkqubo zonxibelelwano lweselula, iWi-Fi, kunye nesathelayithi.
Ixesha lokuthumela: Juni-01-2026
