Ana amfani da kebul na coaxial don aika makamashin RF daga tashar jiragen ruwa ko wani sashi zuwa wasu tashoshin jiragen ruwa/sassan tsarin. Ana amfani da kebul na coaxial na yau da kullun azaman layin coaxial na microwave. Wannan nau'in waya yawanci yana da masu jagoranci guda biyu a cikin siffar silinda a kusa da axis na gama gari. Duk an raba su da kayan dielectric. A ƙananan mitoci, ana amfani da siffar polyethylene azaman dielectric, kuma a manyan mitoci ana amfani da kayan Teflon.
Nau'in kebul na coaxial
Akwai nau'ikan kebul na coaxial da yawa dangane da tsarin jagorar jagora da hanyoyin kariya da aka yi amfani da su. Nau'ikan kebul na coaxial sun haɗa da kebul na coaxial na yau da kullun kamar yadda aka bayyana a sama da kuma kebul na coaxial mai cike da iskar gas, kebul na coaxial mai alaƙa, da kebul na coaxial mai kariya ta waya biyu.
Ana amfani da kebul na coaxial masu sassauƙa a cikin eriya masu karɓar watsa shirye-shiryen talabijin tare da masu amfani da wutar lantarki na waje da aka yi da foil ko kitso.
A mitoci na microwave, na'urar sarrafawa ta waje tana da tauri kuma na'urar dielectric za ta yi ƙarfi. A cikin kebul na coaxial mai cike da iskar gas, ana yin mai kula da tsakiya da siririn mai hana iskar yumbu, wanda kuma ake amfani da shi ta hanyar amfani da polytetrafluoroethylene. Ana iya amfani da busasshen nitrogen a matsayin kayan dielectric.
A cikin coax mai kama da juna, an ɗaga insulator na ciki a kusa da conductor na ciki. A kusa da conductor mai kariya da kuma kewaye da wannan murfin kariya.
A cikin kebul mai kariya biyu, yawanci ana samar da kariya biyu ta hanyar samar da garkuwa ta ciki da kuma garkuwa ta waje. Wannan yana kare siginar daga EMI da duk wani haske daga kebul da ke shafar tsarin da ke kusa.
Halayen impedance na layin coaxial
Ana iya tantance tasirin tasirin kebul na coaxial ta amfani da dabarar da ke ƙasa.
Zo = 138/sqrt(K) * Log(D/d) Ohms
a cikin,
K shine ma'aunin dielectric na insulator tsakanin masu jagoranci na ciki da na waje. D shine diamita na mai gudanarwa na waje yayin da d shine diamita na mai gudanarwa na ciki.
Amfani ko Fa'idodin Kebul na Coaxial
Ga fa'idodi ko rashin amfanin kebul na coaxial:
➨Saboda tasirin fata, kebul na coaxial da ake amfani da su a aikace-aikacen mita mai yawa (>50 MHz) suna amfani da rufin jan ƙarfe na mai jagoranci na tsakiya. Tasirin fata sakamakon siginar mita mai yawa da ke yaɗuwa a saman waje na mai jagora ne. Yana ƙara ƙarfin juriya na kebul kuma yana rage nauyi.
➨ Kebul na coaxial yana da rahusa.
➨Ana amfani da na'urar sadarwa ta waje a cikin kebul na coaxial don inganta raguwa da kariyar. Ana samun wannan ta hanyar amfani da foil ko kirtani na biyu da ake kira sheath (wanda aka sanya wa suna C2 a Hoto na 1). Jaket ɗin yana aiki a matsayin garkuwar muhalli kuma an yi shi a cikin kebul na coaxial mai haɗaka azaman mai hana harshen wuta.
➨Yana da ƙarancin saurin kamuwa da hayaniya ko tsangwama (EMI ko RFI) fiye da kebul masu lanƙwasa.
➨ Idan aka kwatanta da nau'in twisted, yana tallafawa watsa siginar mai girman bandwidth.
➨ Yana da sauƙin waya da faɗaɗawa saboda sassauci.
➨Yana ba da damar watsawa mai yawa, kebul na coaxial yana da kayan kariya mafi kyau.
Rashin Amfani Ko Rashin Amfanin Kebul na Coaxial
Ga wasu daga cikin rashin amfanin kebul na coaxial:
➨Babban girma.
➨ Shigar da kayan aiki mai nisa yana da tsada saboda kauri da tauri.
➨Tunda ana amfani da kebul guda ɗaya don aika sigina a ko'ina cikin hanyar sadarwa, idan kebul ɗaya ya lalace, dukkan hanyar sadarwa za ta lalace.
➨Tsaro babban abin damuwa ne domin yana da sauƙin sauraron kebul na coaxial ta hanyar karya shi da kuma saka haɗin T (nau'in BNC) tsakanin su biyun.
➨Dole ne a yi amfani da shi domin hana tsangwama.
Lokacin Saƙo: Disamba-15-2023
