RF coaxial haɗe-haɗe ne maɓalli don isar da sigina mai girma{0} kuma ana amfani da su sosai a cikin sadarwa, radar, sararin samaniya, da sauran fagage. Babban aikin su shine samar da ingantaccen haɗin kai tsakanin na'urori yayin tabbatar da amincin sigina.
Tushen tsarin haɗin haɗin coaxial na RF ya ƙunshi madugu na ciki, madugu na waje (yawanci garkuwa), da insulating dielectric tsakanin su. Mai gudanarwa na ciki yana watsa babban halin yanzu, yayin da madugu na waje yana ba da garkuwar ƙasa, yana kare siginar daga tsangwama na lantarki na waje. Dielectric insulating, wanda yake tsakanin masu gudanarwa na ciki da na waje, yana kula da keɓewar lantarki kuma yana goyan bayan mai gudanarwa na ciki. Wannan tsarin yana ba da damar ƙaramar-asara da tsayin{5}} isar da siginar RF.
Ka'idar aiki ta dogara ne akan halayen yaduwa na igiyoyin lantarki na lantarki a cikin tsarin coaxial. Lokacin da babban siginar mitoci{1} ya ratsa ta cikin madugu na ciki, tasirin garkuwar madugu na waje yana taƙaita filin lantarki zuwa sararin samaniya tsakanin masu gudanarwa na ciki da na waje, yana samar da tsayayyen tsarin igiyar igiyar ruwa ta TEM (transverse electromagnetic). Wannan tsarin yana tabbatar da ƙarancin radiation da ƙarancin watsa siginar -. Dole ne a daidaita ƙirar mai haɗawa daidai don tabbatar da ci gaba tsakanin masu gudanarwa na ciki da na waje don guje wa tunanin sigina ko asarar kuzari saboda rashin daidaituwar rashin daidaituwa.
Makullin aikin RF coaxial haši ya ta'allaka ne a cikin daidaitawarsu, yawanci 50Ω ko 75Ω don ɗaukar buƙatun aikace-aikacen daban-daban. Rashin daidaituwa na impedance zai iya haifar da tunanin sigina, rage yawan watsawa, har ma da lalata kayan aiki. Don haka, an inganta ginshiƙan mahaɗin mahaɗa, zaɓin kayan, da madaidaicin mashin don tabbatar da sauye-sauye na sigina mai girma- a wurin haɗin.
Bugu da ƙari, masu haɗin coaxial na RF dole ne su nuna kyakkyawan kwanciyar hankali na inji da daidaitawar muhalli, kamar juriya ga yanayin zafi, danshi, da rawar jiki, don biyan buƙatun yanayin aiki masu rikitarwa. A takaice, RF coaxial haši, ta hanyar nagartaccen tsarin lantarki da na injina, suna samun ingantacciyar watsa siginar sigina mai ƙarfi{1}, yana mai da su wani abu mai mahimmanci na tsarin lantarki na zamani.