Ee. Koyaya, tsarin eriya na farko sun yi amfani da masu ciyarwa lebur, waɗanda ba igiyoyin coaxial ba.
Ana buƙatar fahimtar kebul na coaxial RF a sassa biyu.
RF: RF yana nufin mitoci na lantarki waɗanda zasu iya haskakawa zuwa sararin samaniya, jere daga 300kHz zuwa 300GHz.
RF shine mitar rediyo na halin yanzu, gajeriyar hannu don babban musanyawan kalaman lantarki na lantarki-.
Madadin halin yanzu wanda ke canzawa kasa da sau 1000 a cikin dakika ana kiransa low{1}} mitar halin yanzu, kuma wannan yana canzawa fiye da sau 10000 a cikin dakika daya ana kiransa babban halin yanzu{3}. RF shine irin wannan babban mitar halin yanzu -.
RF (300K-300G) shine maɗaurin mitar mafi girma a cikin kewayon babban mitar (fiye da 10K).
A cikin ka'idar lantarki, lokacin da halin yanzu ke gudana ta hanyar madugu, an samar da filin maganadisu a kusa da madubin; a lokacin da alternating current yana gudana ta cikin madugu, ana samun madaurin wutar lantarki a kewayen madugu. Ana kiran wannan igiyar wuta ta lantarki.
Hawan wutar lantarki tare da mitoci ƙasa da 100kHz ana ɗaukar su ta fuskar duniya kuma ba za a iya watsa su da kyau ba. Koyaya, igiyoyin lantarki na lantarki tare da mitoci sama da 100kHz na iya yaduwa ta cikin iska kuma ionosphere zai nuna shi a gefen waje na yanayi, yana ba da damar watsa nesa mai tsawo-.
Muna kiran manyan raƙuman ruwa na lantarki mai ƙarfi{0} tare da dogayen watsa ƙarfin mitar rediyo (RF).
Ana amfani da fasahar RF sosai wajen sadarwa mara waya; Tsarin talabijin na USB suna amfani da watsawar RF.
Kebul na Coaxial: Saboda masu gudanarwa guda biyu (mai gudanarwa na ciki / mai gudanarwa na waje) suna da asymmetrical game da ƙasa, tare da ɗaya mai gudanarwa na ciki wanda yake a kusurwar sauran cylindrical na waje, ana kiran shi "coaxial cable."
Siffar kebul na coaxial shine cewa filin lantarki yana rufe da gaske a cikin madugu na waje, yana ba da izinin amfani a mafi girman mitoci.
Lura: Kebul na waje na coaxial duka madugu ne da Layer na garkuwa (yana aiki azaman madauki kuma yana samar da aikin tsangwama-).
Kebul na coaxial da ake amfani da shi don watsa siginar RF ana kiransa "Cable coaxial RF."
Ana watsa siginar da eriya ta karɓa zuwa ƙarshen gaba ta hanyar layin ciyarwa, kuma ana watsa siginar siginar daga ƙarshen gaba zuwa na'urorin karɓa daban-daban ta hanyar layin ciyarwa.
A zamanin yau, sau da yawa muna ganin haɗin kai da na'urorin watsawa ana amfani da su a cikin tsarin haɓaka sigina kamar na farko{0} hasumiya na sigina mara waya (China Mobile, China Unicom, China Telecom, da dai sauransu), tunnels, da ginshiƙai.