Malunga ne-eriyali kamabonwakude wonke umntu uqhelene nayo, khumbula i-eriyali endala emnyama namhlophe, yi-eriyali yayo kwaye emva koko iphuhliswe kwi-eriyali ye-TV yangaphandle.Kodwa ukuza kuthi ga ngoku, itekhnoloji ye-antenna ye-TV kunye nokuqoqwa ngakumbi, ngoku i-eriyali inokuhlangabezana kakhulu neemfuno zethu ebomini, abahlobo abaninzi kwiimarike zokuthenga i-eriyali, ukubuyela ekhaya akuyi kufakela isayensi.Andazi ukuba i-eriyali isebenza njani, andazi ukuba ndiyifake phi.Namhlanje, ndiya kukwazisa ngokufakela i-antenna yeTV ukwenza ingcaciso ecacileyo, ndiyathemba ukukunceda.
1. Umgaqo wokusebenza kunye nomsebenzi we-antenna
Njengenxalenye eyimfuneko yonxibelelwano olungenazingcingo, umsebenzi osisiseko we-eriyali kukukhanya kunye nokufumana amaza erediyo.Xa uhambisa, i-high-frequency current iguqulwa ibe yi-electromagnetic wave;Xa ufumana, i-wave shock wave iguqulwa ibe yi-high frequency current.
Isibini, uhlobo lwe-eriyali
Kukho iintlobo ngeentlobo zee-eriyali, kwaye zinokwahlulwa zibe zezi ndidi zilandelayo: isikhululo sesiseko Ii-eriyali kunye nee-eriyali eziphathwayo eziphathwayo zinokwahlulwa zibe ngamaza e-ultra-long, amaza amaza, amaza aphakathi, amaza amafutshane, i-ultra-short wave, kunye ne-Microwave. Ii-eriyali zokusetyenziswa kwazo;Ngokolwalathiso lwalo, lunokwahlulwai-eriyali intoomnidirectional kunye nolwalathiso.
Isithathu, indlela yokukhetha i-eriyali
I-Antenna yinxalenye ebalulekileyo yenkqubo yonxibelelwano, ukusebenza kwayo kuchaphazela ngokuthe ngqo isalathisi senkqubo yonxibelelwano, abasebenzisi kufuneka banikele ingqalelo ekusebenzeni kwayo xa bekhetha i-antenna.Ngokukodwa, kukho imiba emibini, uhlobo lokuqala olukhethiweyo lwe-eriyali;Ukusebenza kombane kwi-eriyali ekhethiweyo yesibini.Ukubaluleka kokukhetha uhlobo lwe-eriyali kukuba: ingaba ipateni yokuqhelanisa ye-eriyali ekhethiweyo ihambelana nemfuno yosasazo lwamaza erediyo kuyilo lwesixokelelwano;Iimfuno zokukhetha ukusebenza kombane we-eriyali zimi ngolu hlobo lulandelayo: Khetha ukuba iinkcukacha zombane ze-eriyali, ezifana ne-frequency bandwidth, gain, and rated power, ziyahlangabezana neemfuno zoyilo lwesistim.Ke ngoko, umsebenzisi ebengcono ukunxibelelana nomenzi xa ekhetha i-eriyali.
Okwesine, inzuzo ye-eriyali
Inzuzo yenye yezalathisi eziphambili ze-eriyali.Yimveliso yomlinganiso wesalathiso kunye nokusebenza kakuhle, kwaye kukubonakaliswa kwemitha yemitha okanye ubungakanani obufunyenweyo be-eriyali.Ukhetho lobungakanani benzuzo luxhomekeke kwiimfuno zoyilo lwesixokelelwano kwindawo yokugubungela amaza kanomathotholo.Ukubeka nje, phantsi kweemeko ezifanayo, ukuphakama kwenzuzo, ukude umgama wokusasazwa kwamaza kanomathotholo.Ngokuqhelekileyo, i-antenna yesikhululo sesiseko ithatha i-antenna ephezulu, kwaye i-antenna yesikhululo esihambayo ithatha i-antenna ephantsi.
Ixesha lokuposa: Apr-27-2023
