Ana amfani da kebul na Coaxial don watsa makamashin RF daga tashar jiragen ruwa ɗaya ko bangaren zuwa wasu tashar jiragen ruwa/ɓangarorin tsarin. Ana amfani da daidaitaccen kebul na coaxial azaman layin coaxial na microwave. Wannan nau'i na waya yawanci yana da madugu biyu a cikin siffa ta siliki a kusa da axis gama gari. An raba su duka ta hanyar dielectric abu. A ƙananan mitoci, ana amfani da nau'in polyethylene azaman dielectric, kuma a mafi girma mitoci ana amfani da kayan Teflon.
Nau'in kebul na coaxial
Akwai nau'i-nau'i da yawa na kebul na coaxial dangane da ginin gudanarwa da hanyoyin kariya da aka yi amfani da su. Nau'in kebul na Coaxial sun haɗa da daidaitaccen kebul na coaxial kamar yadda aka bayyana a sama da kuma kebul na coaxial mai cike da iskar gas, kebul na coaxial na articulated, da kebul na coaxial mai kariya bi-waya.
Ana amfani da igiyoyi masu sassauƙa na coaxial a cikin watsa shirye-shiryen talabijin masu karɓar eriya tare da madugu na waje da aka yi da foil ko braid.
A mitoci na microwave, madugu na waje yana da ƙarfi kuma dielectric zai kasance da ƙarfi. A cikin kebul na coaxial mai cike da iskar gas, ana yin madubin cibiyar ne da sirara ceramic insulator, kuma ana amfani da polytetrafluoroethylene. Ana iya amfani da busasshen nitrogen a matsayin kayan aikin dielectric.
A cikin coax mai magana, an ɗaga insulator na ciki a kusa da madugu na ciki. a kusa da madugu mai kariya da kuma kewayen wannan kumfa mai karewa.
A cikin kebul na coaxial mai kariya biyu, ana ba da kariya mai yadudduka biyu ta hanyar samar da garkuwar ciki da garkuwa ta waje. Wannan yana kare siginar daga EMI da kowane radiation daga kebul da ke shafar tsarin da ke kusa.
Halayen layin Coaxial impedance
Za'a iya ƙayyade ƙayyadaddun ƙayyadaddun ƙayyadaddun kebul na coaxial na asali ta amfani da dabara mai zuwa.
Zo = 138/sqrt(K) * Log(D/d) Ohms
a ciki,
K shine madaidaicin dielectric na insulator tsakanin masu gudanarwa na ciki da na waje. D shine diamita na madugu na waje kuma d shine diamita na madugu na ciki.
Fa'idodi ko Fa'idodin Cable na Coaxial
Masu zuwa sune fa'idodi ko fa'idodin kebul na coaxial:
➨Saboda tasirin fata, igiyoyin coaxial da aka yi amfani da su a cikin aikace-aikacen mitoci masu yawa (> 50 MHz) suna amfani da murfin jan ƙarfe na madubin cibiyar. Tasirin fata shine sakamakon sigina mai girma da ke yaduwa tare da saman saman madugu. Yana ƙara ƙarfin ƙarfi na kebul kuma yana rage nauyi.
➨Coaxial na USB yana da ƙasa kaɗan.
➨ Ana amfani da madubin waje a cikin kebul na coaxial don inganta attenuation da garkuwa. Ana cim ma wannan ta hanyar amfani da foil ko ɗinki na biyu da ake kira sheath (wanda aka zana C2 a hoto na 1). Jaket ɗin yana aiki azaman garkuwar muhalli kuma an sanya shi a cikin kebul na coaxial na haɗin gwiwa azaman mai hana wuta.
➨Ba shi da saurin kamuwa da surutu ko tsangwama (EMI ko RFI) fiye da murɗaɗɗen igiyoyi masu haɗa juna.
➨ Idan aka kwatanta da murɗaɗɗen biyu, yana goyan bayan watsa siginar bandwidth mai girma.
➨ Mai sauƙin waya da faɗaɗa saboda sassauci.
➨Yana ba da damar babban watsawa, kebul na coaxial yana da mafi kyawun kayan kariya.
Lalacewa ko rashin amfani na Coaxial Cable
Waɗannan su ne rashin amfani na kebul na coaxial:
➨ Babban girma.
➨ Shigar mai nisa yana da tsada saboda kaurinsa da taurinsa.
➨Tunda ana amfani da kebul guda daya don isar da sigina a duk hanyar sadarwar, idan wayar daya ta gaza, gaba daya cibiyar sadarwa zata ragu.
➨Tsaro yana da matukar damuwa saboda yana da sauƙin sauraren kebul na coaxial ta hanyar karya shi da saka T-connector (nau'in BNC) tsakanin su biyun.
➨Dole ne a kafa ƙasa don hana tsangwama.
Lokacin aikawa: Dec-15-2023
