Ngumntu onke amaxwebhu okanye abezone azingqinisekileyo kwiRF circuits ngu-50 ohms (Ω)?

Ngenxa yokuba, uya kufuneka sihlale sithathel’ imibiko eyenziwe yombhali we-transmission lines. Izilondolozi zombhali zisebenzisa ukusetyenziswa kwesinye sinethemba kunye nokuthola ngazo izinto elinani lokugcina, njengoko-axial cables, micro-strip lines, strip lines, kunye nalo mnye. Icoaxial cable enguRF ineenkcukacha ezidinga umoya wosinye sinethemba, luhlala ngokubanzi kwi-four layers: inner conductor, a dielectric, outer conductor, kunye ne-sheath. Ngokwesobukiso, zingaba zonke izinga lolu hlobo lwencwadi zizama ukwenza ukuba zihlabelele kanye ne-shielding layers okushesha.

Ukucacisela komphendulo womaxwebhu kunye nokuphumelela kokubona kwesinye sinethemba kuhlinzekelwa yimpedance yesilondolozi kunye nokubhalwa kwe-impedance kulesi siseko. Impedance yesilondolozi iyishicile langaphambili

Ngokubheka ukugcwalisa okuncinci nokuphakamiswa kokuthi kuhlu, yeyiphi le 50 ohm zizikhankaso ezifanekayo ezaziqashisiwe ngokulandelayo phakathi kwe-77 ohms kunye ne-30 ohms. Ngoko ke, kulandelana ukuba wonke umntu ziyathola nge-50 ohms njengesikhankaso esikhoyo.

Lento yiyo ngenxa yokuba izikhankaso zesithelo sokungena noma amaphethuzi wokuvela kwiindlela yezi RF amaqhawekazi kunye namagaba angazange aluhlale kakhulu ngemibhalo e-50 ohms. Ngoko ke, iindlela zakhoza zeRF zizihlanganiswa ngokusebenzela ukukhankasa kwe-50 ohms.

Jiangsu Elesun Cable inakwazi ukwenza i-50 ohms kunye ne-75 ohms coaxial cable ngokushesha RG6, RG59, RG58 kunye ne-RG179, izikhankaso zizihlala ngokwesilinganiso yesi-±2 ohms.