Yebo. Kodwa-ke, amasistimu e-antenna okuqala ayesebenzisa iziphakeli eziyisicaba, okwakungewona amakhebula angama-coaxial.
Izintambo ze-coaxial ze-RF zidinga ukuqondwa ezingxenyeni ezimbili.
I-RF: I-RF ibhekisela kumaza kagesi angakhipha emkhathini, kusukela ku-300kHz kuya ku-300GHz.
I-RF iresiphi yefrikhwensi yomsakazo, isifinyezo segagasi -elishintshashintshayo kagesi.
I-alternating current eshintsha izikhathi ezingaphansi kuka-1000 ngesekhondi ibizwa ngokuthi i-low-frequency current, futhi lokho kushintsha izikhathi ezingaphezu kuka-10000 ngesekhondi kubizwa ngokuthi{3}}imvamisa yamanje. I-RF iyi-frequency yamanje ephezulu-.
I-RF (300K-300G) iyibhendi yefrikhwensi ephezulu ngaphakathi kwebanga le-high-frequency (elingaphezu kuka-10K).
Kuthiyori ye-elekthronikhi, lapho okwamanje kugeleza ku-conductor, insimu kazibuthe yakhiwa eduze komqhubi; lapho ukushintshana kwamanje kugeleza ku-conductor, kwakheka inkambu ye-electromagnetic eshintshanayo ezungeze umqhubi. Lokhu kubizwa ngokuthi i-electromagnetic wave.
Amagagasi kagesi anamaza angaphansi kuka-100kHz amuncwa umhlaba futhi awakwazi ukudluliselwa ngempumelelo. Nokho, amaza kazibuthe kagesi anamaza angaphezu kuka-100kHz angasabalala emoyeni futhi aboniswe i-ionosphere emaphethelweni angaphandle omkhathi, evumela{3}}ukudluliselwa kwebanga elide.
Sibiza-amagagasi e-electromagnetic aphezulu{1}}anamandla amade okudlulisa amandla erediyo (RF).
Ubuchwepheshe be-RF busetshenziswa kakhulu ekuxhumaneni okungenantambo; amasistimu kamabonakude wekhebula asebenzisa ukudluliswa kwe-RF.
Intambo ye-coaxial: Ngenxa yokuthi amakhondaktha amabili (ikhondaktha yangaphakathi/ikhondaktha yangaphandle) awalingani ngokuphathelene nomhlaba, enokhondatha oyedwa wangaphakathi otholakala eksisi yomunye ukhondatha oyisilinda wangaphandle, ubizwa ngokuthi "ikhebula eliqinile."
Isici samakhebuli angama-coaxial ukuthi inkambu kazibuthe kagesi ivalelwe ngaphakathi kwekhondatha yangaphandle, evumela ukusetshenziswa kumaza aphezulu.
Qaphela: Ikhondakta yangaphandle yekhebula eliqinile kokubili kuyi-coaxial kanye nesendlalelo esivikelayo (esebenza njengokubili iluphu futhi ihlinzeka{0}}ngokusebenza kokuphazanyiswa).
Intambo eyi-coaxial esetshenziselwa ukudlulisa amasignali e-RF ibizwa ngokuthi "intambo ye-coaxial ye-RF."
Isignali etholwe uthi idluliselwa phambili ngomugqa wokuphakelayo, futhi ukuphuma kwesiginali kusuka ekugcineni kwangaphambili nakho kudluliselwa kumadivayisi ahlukahlukene amukelayo ngomugqa wokuphakelayo.
Kulezi zinsuku, sivamise ukubona iziphakeli zokuxhuma nokudlulisa zisetshenziswa ezinhlelweni zokukhulisa amasignali ezifana-nemibhoshongo yesignali engenantambo yokuqala (i-China Mobile, i-China Unicom, i-China Telecom, njll.), imigudu, nezindlu zangaphansi.