1. Ukuzuza kwe-antenna
I-antennainzuzo ibhekiselele kumlinganiselo woxinaniso lwamandla okusasazeka kwe-eriyali kwicala elithile elichaziweyo kuxinaniso lwamandla okusasazeka kwe-eriyali yereferensi (idla ngokuba ngumthombo ofanelekileyo wendawo yokusasazeka) kumandla okufakwayo afanayo. Iiparamitha ezimele inzuzo ye-eriyali yi-dBd kunye ne-dBi.
Intsingiselo ebonakalayo yenzuzo inokuqondwa ngolu hlobo lulandelayo: ukuvelisa isignali yobungakanani obuthile kwindawo ethile kumgama othile, ukuba umthombo ongekho-directional ofanelekileyo usetyenziswa njenge-eriyali yokudlulisa, amandla okufaka i-100W afunekayo, ngelixa i-eriyali ye-antenna enenzuzo ye-G = 13dB (amaxesha angama-20) isetyenziswa njenge-antenna yokuhambisa amandla / i-5W = 50 kuphela i-antenna = i-5W = 10 = i-antenna ye-10 kuphela. Ngamanye amazwi, ukuzuza kwe-eriyali, ngokwempembelelo yayo yemitha kweyona ndlela iphezulu yokusasazeka kwemitha, kukuphinda-phinda kwamandla okufakwayo akhulisiwe xa kuthelekiswa nomthombo wenqaku ongekho mkhomba-ndlela.
Inzuzo ye-eriyali isetyenziselwa ukulinganisa amandla e-eriyali ukuthumela nokufumana iimpawu kwicala elithile kwaye yenye yezona parameters zibalulekileyo ekukhetheni i-eriyali. Inzuzo inxulumene ngokusondeleyo nepateni ye-eriyali. Incinci i-lobe ephambili yepateni kwaye incinci i-lobe yecala, iphezulu inzuzo. Ubudlelwane phakathi kobubanzi be-lobe engundoqo kunye nokuzuza kwe-eriyali kuboniswe kuMfanekiso 1-1.
Umfanekiso 1-1
Phantsi kweemeko ezifanayo, okukhona inzuzo iphezulu, kokukhona i-radio wave isanda. Nangona kunjalo, ekuphunyezweni kwangempela, inzuzo ye-antenna kufuneka ikhethwe ngokufanelekileyo ngokusekelwe ekulungelelaniseni umqadi kunye nendawo ekujoliswe kuyo. Ngokomzekelo, xa umgama wokugubungela usondele, ukuze kuqinisekiswe umphumo wokugubungela indawo ekufutshane, i-antenna ephantsi-inzuzo ephantsi kunye ne-lobe ebanzi ethe nkqo kufuneka ikhethwe.
2. Iikhonsepthi ezinxulumeneyo
·dBd: ngokunxulumene nenzuzo ye-eriyali elinganayo,
·dBi: ngokunxulumene nenzuzo ye-eriyali yomthombo wenqaku, i-radiation kuwo onke amacala iyafana. dBi=dBd+2.15
I-engile ye-Lobe: i-engile eyenziwe ngu-3dB ngaphantsi kwencopho ye-lobe ephambili kwipatheni ye-eriyali, nceda ubhekisele kububanzi be-lobe ngeenkcukacha, umthombo ofanelekileyo wendawo ye-radiation: ibhekiselele kwi-eriyali ye-isotropic efanelekileyo, oko kukuthi, indawo elula yomthombo wemitha, eneempawu ezifanayo zemitha kuzo zonke iinkalo kwisithuba.
3. Ifomula yokubala
Inzuzo ye-eriyali =10lg(i-eriyali yemitha yoxinzelelo lwamandla/ireferensi yoxinaniso lwamandla ombane we-eriyali)
Ukuze ufunde ngakumbi ngee-eriyali, nceda undwendwele:
Ixesha lokuposa: Dec-06-2024
