Ngaba onke amacandelo ojongano olwahlukeneyo kwiisekethe zeRF 50 ohms (Ω)?

Masiqale siqonde ulwazi olufanelekileyo lweentambo zothumelo. Iintambo zothumelo zisetyenziselwa ukusasaza amandla omqondiso kwaye ziza kwiindidi ezininzi, njengeentambo ze-coaxial, imigca ye-micro-strip, imigca ye-strip, njalo njalo. Intambo ye-RF eqhelekileyo yintambo ye-coaxial, edla ngokuyilwa yi-coaxial cable, i-dielectric, i-coaxial cable, kunye ne-sheath. Nangona kunjalo, ezinye iintambo zinokuba neengqimba ezininzi zokukhusela kunye neeleya ezikhuselayo.

Ugqithiso lwamandla aphezulu kunye nokubonakaliswa kwesignali encinci yesignali kuchongwa yi-impedance yomgca wokuhambisa kunye nokudibanisa kwe-impedance kwinkqubo. I-impedance yomgca wothumelo ibizwa ngokuba yi-impedance yeempawu

Ukuze ulungelelanise ilahleko encinci kunye nobukhulu bomthamo wamandla, i-impedance ye-50 ohm yeempawu zakhethwa njenge-compromise phakathi kwe-77 ohms kunye ne-30 ohms. Ke ngoko, kuqhelekile ukuba wonke umntu akhethe ngokufanayo i-50 ohms njengophawu lokuthintela.

Esi sisizathu sokuba kutheni uthintelo lwegalelo okanye izibuko zemveliso kwizixhobo zeRF ngokubanzi okanye izixhobo ziyi-50 ohms. Ke ngoko, iisekethe ze-RF zikwayilwe ngokusekwe kwi-impedance ehambelana ne-50 ohms.

I-Jiangsu Elesun Cable inokuvelisa i-50 ohms kunye ne-75 ohms coaxial cable umz. I-RG6, RG59, RG58, kunye ne-RG179, ukuthintela ukunyamezela yi-±2 ohms.