Izici zekhebula le-coaxial

Intambo ye-coaxialiwuhlobo lwekhebula elinikezelwe kudatha nokudluliswa kwesignali, ehlanganisa i-conductor emaphakathi, ungqimba olufakwa ngaphakathi, ungqimba lwehawu elinezikhala, ungqimba olungaphandle lokuvikela kanye nongqimba lwesheath.Umqhubi omaphakathi wentambo ye-coaxial iyintambo yensimbi, ngokuvamile eyenziwe ngethusi noma nge-aluminium, isendlalelo sokuvikela ngokuvamile senziwe nge-polypropylene noma i-polyethylene, futhi ungqimba oluvikelayo lwe-mesh lumbozwe ungqimba oluvikelayo futhi lwenziwa ngocingo lwethusi noma i-aluminium foil. .Intambo ye-coaxialisetshenziswa kakhulu kunethiwekhi yamakhompiyutha, ukudluliswa kwesignali ye-TV, izinhlelo zokuphepha, iziteshi zomsakazo kanye neminye imikhakha.

Okulandelayo ezinye zezici eziyinhloko zeikhebula coaxial:

 1. Ukugxambukela kwe-Anti-electromagnetic: Ungqimba oluvikelayo lwe-mesh yangaphakathi lwekhebula le-coaxial lungamelana ngempumelelo nokuphazanyiswa yi-electromagnetic yangaphandle futhi luqinisekise ukuzinza nokuthembeka kokudluliswa kwesignali.

 2. Umthamo omkhulu: I-conductor emaphakathi yeikhebula coaxialiyinsimbi yensimbi, i-conductivity enhle, umthamo omkhulu, ingadlulisela amasignali aphezulu.

 3. Ibanga elide lokudluliswa kwesignali: ibanga lokudlulisa isignali lekhebula elikhoaxial likude kunalelo lekhebula evamile, futhi ibanga lokudlulisela ngokuvamile lisuka kumakhilomitha ambalwa kuya kumashumi amakhilomitha.

 4.Ukuvikelwa kwesendlalelo se-sheath: ungqimba lwekhebula le-coaxial lwangaphandle lokuvala kanye nongqimba lwesheath lungavikela ngempumelelo ukwakheka kwesikhungo sekhebula futhi lwandise impilo yesevisi yekhebula.

 5.I-impedance yesici: ingxenye eyinhloko yekhebula le-coaxial yi-conductor ezimbili zangaphakathi nangaphandle, i-current ngokusebenzisa i-conductor izokhiqiza ukumelana ne-inductance, futhi ukuqhutshwa kanye namandla phakathi kwama-coaxial kuzokwenziwa, futhi kusatshalaliswe emgqeni, owaziwa nangokuthi ikhophi esabalalisiwe.

Njengomphumela, isici sangempela sokuvimbela ikhebula le-coaxial sizoba phezulu kunenani lethiyori lapho uxhuma isistimu yokubonisa.Ngakho-ke, ukuze kugwenywe ukubonakaliswa kwamandla wesignali okukhiqizwa yilesi simo futhi kuqinisekiswe umphumela wokudlulisela ongcono kakhulu, i-terminal load impedance iyadingeka ukuze ihambisane nokubambezeleka kwesici sekhebula ngangokunokwenzeka.

 6.Izici zokunciphisa: Izici zokunciphisaikhebula coaxialngokuvamile zikhonjwa ngokungaguquki kokunciphisa, okulingana nama-decibel okunciphisa isignali yamanje ngobude beyunithi ngayinye.I-attenuation constant yentambo ye-coaxial ilingana nemvamisa yokusebenza yesiginali, okungukuthi, ukuphakama kwe-frequency ekhiqizwayo, kukhulu ukungaguquguquki okungaguquki, ukwehla kwe-frequency, kuncane okungaguquki kokunciphisa.

 Kufanele kuqashelwe ukuthi izinhlobo kanye nokucaciswa ofizintambo ze-coaxialziyahlukahluka ngokuya ngezimo zohlelo lokusebenza nezidingo ezahlukahlukene.Lapho ukhetha ikhebula le-coaxial, kuyadingeka ukuthi ucabangele imvamisa yesiginali edlulisiwe, ibanga lokudlulisela, indawo esetshenziswayo, uhlobo lwesixhumi esibonakalayo nezinye izici, ukuze ukhethe imodeli efanele kanye nokucaciswa.