Ni ubuhe butumwa bwa antene ya tereviziyo?

amakuru 4

Nkigice cyingenzi cyitumanaho ridafite umugozi, umurimo wibanze wa antenne ni ukumurika no kwakira imirongo ya radio.Igikorwa ni uguhindura umuyaga wa electromagnetique uva kuri tereviziyo ugahinduka ibimenyetso bya voltage kuri frequency nyinshi.

Uburyo antenne ya TV ikora ni uko iyo umuyagankuba wa elegitoroniki ugenda utera imbere, ugakubita antenne yicyuma, ugaca umurongo wumurongo wa magneti, kandi ugakora ingufu za electromotive, aribwo voltage yerekana ibimenyetso.

Nkigice cyingenzi cya sisitemu yitumanaho, imikorere ya antenne igira ingaruka ku buryo butaziguye urutonde rwa sisitemu y'itumanaho.Umukoresha agomba kwitondera imikorere yambere muguhitamo antenne.

Kimwe mu bimenyetso nyamukuru byerekana antenne ni inyungu, nicyo gicuruzwa cya coefficient yicyerekezo kandi ikora neza, kandi nigaragaza ubunini bwimirasire ya antenne cyangwa imiraba yakiriwe.Guhitamo ingano yinyungu biterwa nibisabwa na sisitemu igishushanyo cya radio ikwirakwiza ahantu.Muri make, mubihe bimwe, niko inyungu nyinshi, niko intera ikwirakwizwa rya radio.Mubisanzwe, antenne ya sitasiyo fatizo ifata antenne yunguka cyane, naho antenne igendanwa ikoresha antenne yunguka make.

Televiziyo yakira antenne muri rusange ni antenne y'umurongo (satelite yakira antenne ni antenne yo hejuru), ukurikije intera yumurongo wikimenyetso cyakiriwe cyane irashobora kugabanywa muri antenne ya VHF, antenne ya UHF na antene yose;Ukurikije ubugari bwumurongo wa antenne yakira, igabanijwemo antenne imwe yumuyoboro hamwe na antenne yumurongo.Ukurikije imiterere yacyo, irashobora kugabanywamo antenne iyobora, antenne yimpeta, antenne y amafi, antenne yigihe cyigihe nibindi.

Gahunda ya televiziyo ifunguye yakiriwe na sisitemu ya tereviziyo ya kabili ikubiyemo cyane imirongo ibiri yumurongo: ⅵ (umuyoboro 1-4) na ⅷ (umuyoboro 6-12) mu itsinda rya VHF na UIV (umuyoboro 13-24) na UV (umuyoboro 25- 48) mu itsinda rya UHF.Muri bande ya VHF, antenne yihariye ya antenna yakira ibimenyetso bya TV byumuyoboro runaka iratoranijwe muri rusange, kandi umwanya mwiza wo kwakira watoranijwe kugirango ushyirwemo, kuburyo ifite ibyiza byinyungu nyinshi, guhitamo neza hamwe nubuyobozi bukomeye.Nyamara, igice cya antenna igice cyakoreshejwe muri ⅵ na ⅷ hamwe na antenna yose ya antenna ikoreshwa muri VHF ifite umurongo mugari hamwe ninyungu nke, zikwiranye na sisitemu ntoya.Muri bande ya UHF, antenne yumurongo wa antenne irashobora kwakira progaramu ya tereviziyo yimiyoboro myinshi itandukanijwe cyane.


Igihe cyo kohereza: Kanama-25-2022