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Chiphunzitso cha Antena Waya Wautali: Mitundu, Mfundo Zogwirira Ntchito ndi Ntchito Zoyesera za RF
Mu chiphunzitso cha antenna, ubale pakati pa kutalika kwa antenna ndi kutalika kwa nthawi yogwirira ntchito ndi chimodzi mwazinthu zofunika kwambiri zomwe zimakhudza magwiridwe antchito a radiation. Antena yayitali ya waya ndi chitsanzo chabwino. Mosiyana ndi dipole yayifupi kapena dipole ya theka la mafunde, antenna yayitali ya waya nthawi zambiri imayatsa ...Werengani zambiri -
Chiphunzitso cha Antena: Kodi Antena Yaifupi ya Dipole Ndi Chiyani?
Antena ya dipole yaifupi ndi imodzi mwa mitundu yoyambira yomwe imagwiritsidwa ntchito mu chiphunzitso cha antena. Ndi antena yosavuta ya waya yomwe kutalika kwake konse ndi kochepa kwambiri kuposa kutalika kwa mafunde a chizindikiro chogwirira ntchito. Ngakhale kapangidwe kake kakuwoneka kosavuta kwambiri, dipole yaifupi ndi chizindikiro chofunikira...Werengani zambiri -
Chiphunzitso cha Antena: Kumvetsetsa Antena ya Dipole Yonse-Wave
Kodi Antena ya Dipole ya Mafunde Onse Ndi Chiyani? Antena ya dipole ya mafunde onse ndi antena ya dipole yolunjika yomwe kutalika kwake konse kuli kofanana ndi kutalika kwa mafunde amodzi pafupipafupi yogwirira ntchito. Mwanjira ina, ngati kutalika kwa mafunde kukuimiridwa ndi λ, kutalika konse kwa di...Werengani zambiri -
Chiphunzitso cha Antena - Dipole Yopindidwa ndi Half-Wave
Dipole yopindidwa ndi antenna yokhala ndi ma conductor awiri ofanana olumikizidwa kumapeto onse awiri, kupanga kapangidwe kozungulira kotsekedwa, komwe malo operekera chakudya ali pakati. Utali wonse wa antenna ndi theka la kutalika kwa mafunde, ndichifukwa chake imatchedwanso kuti theka la mafunde lopindidwa ...Werengani zambiri -
Chiphunzitso cha Antena - Half-Wave Dipole
Antena ya dipole imadulidwa ndikupindidwa kuti ipeze kuwala kogwira mtima. Utali wonse wa waya womwe umagwiritsidwa ntchito ngati dipole ndi wofanana ndi theka la kutalika kwa mafunde (monga, l=λ/2）). Mtundu uwu wa antena umatchedwa antena ya dipole ya theka-wave. Chifukwa cha ubwino wake, ndi antena yomwe imagwiritsidwa ntchito kwambiri...Werengani zambiri -
Chiphunzitso cha Antena - Mawaya
Ma antenna a waya ndi amodzi mwa mitundu yoyambira ya ma antenna. Ndi odziwika bwino ndipo amagwiritsidwa ntchito kwambiri. Kuti timvetse bwino ma antenna a waya, choyamba tiyeni tiwone chingwe chotumizira. Mzere Wotumizira Mzere wotumizira, kapena waya, umanyamula mphamvu zamagetsi kuchokera...Werengani zambiri -
Chiphunzitso cha Antena - Poynting Vector
Ma antenna amatumiza kapena kulandira chidziwitso potulutsa mphamvu yamagetsi. Chifukwa chake, mphamvu ndi mphamvu ndi zinthu zofunika kwambiri zomwe zimagwirizanitsidwa ndi mafunde amagetsi awa, ndipo ndikofunikira kuzikambirana. Mafunde amagetsi amakhala ndi gawo lamagetsi ndi...Werengani zambiri -
Chiphunzitso cha Antena - Beamwidth
Mu kapangidwe ka kuwala kwa antenna, lobe yayikulu imayimira kuwala kwakukulu kwa antenna, komwe mphamvu yayikulu komanso yokhazikika imafalikira. M'lifupi mwa m'lifupi ndi m'lifupi mwa angular ya malo otseguka momwe mphamvu yambiri imafalikira. Magawo awiri akuluakulu ...Werengani zambiri -
Chiphunzitso cha Antena - Miyendo ndi Kugawanika
Mutu uno ukukamba za magawo a ma radiation beams a antenna, omwe amatithandiza kumvetsetsa ma specifications a beam. Beam Area Malinga ndi tanthauzo lokhazikika: “Ngati mphamvu ya radiation P(θ,ϕ) ikadali pamtengo wake wapamwamba kwambiri kuposa...Werengani zambiri -
Chiphunzitso cha Antena — Ma radiation a Isotropic
Mu mutu wapitawu, tinakambirana za mawonekedwe a ma radiation. Kuti tiwunikire bwino ma radiation a antenna, mfundo yofotokozera imafunika. Ma radiation a antenna ya isotropic amakwaniritsa udindo uwu. Tanthauzo Ma radiation a Isotropic amatanthauza ma radiation ochokera ku gwero la mfundo...Werengani zambiri -
Chiphunzitso cha Antena - Mapangidwe a Radiation
Radiation ndi mawu omwe amafotokoza mphamvu ya mafunde amagetsi omwe amatumizidwa kapena kulandiridwa ndi antenna. Mu chithunzi chilichonse cha antenna, chithunzi chosonyeza mawonekedwe a radiation ya antenna chimadziwika kuti ndi mawonekedwe ake a radiation. Poyang'ana radiation p...Werengani zambiri -
Chiphunzitso cha Antena - Pafupi ndi Munda Wakutali
Pambuyo pa kukambirana za magawo ofunikira a antenna mu mutu wapitawu, mutu wina wofunikira kuganizira ndi madera apafupi ndi akutali a antenna. Mphamvu ya radiation yomwe imayesedwa pafupi ndi antenna imasiyana ndi yomwe imayesedwa patali. ...Werengani zambiri
