Yagi Antenna, nkicyerekezo cyerekezo cya kera, ikoreshwa cyane muri HF, VHF na UHF. Yagi ni antenne irangiye igizwe na oscillator ikora (mubisanzwe oscillator yizitiro), umwirondoro wa pasika hamwe numubare wubuyobozi bwa pasiporotunganijwe neza.
Hariho ibintu byinshi bireba imikorere ya Yagi Antenna, kandi guhindura Antenna ya Yagi biragoye kuruta izindi ntenna. Ibipimo bibiri byo muri Antenne byahinduwe cyane: uburyo bwuzuye hamwe no guhagarara igipimo cyumuraba. Ni ukuvuga, Inshuro ya Resonant ya Antenna yahinduwe ahagana 435mhz, kandi igipimo cyumuraba cya Antenne cyegereje 1 bishoboka.
Shiraho antenne kubyerekeye 1.5m uhereye hasi, shyiramo metero zihagaze hanyuma utangire igipimo. Kugirango ugabanye amakosa yo gupima, umugozi uhuza antenne kuri metero zihagaze na radiyo kuri metero zihagaze zigomba kuba ngufi bishoboka. Ahantu hatatu dushobora guhindurwa: Ubushobozi bwumutungo wa Trimmer, umwanya wumuzunguruko mugufi nuburebure bwa oscillattor ikora. Intambwe zihariye zo guhindura ni izi zikurikira:
(1) gukosora umuzunguruko mugufi 5 ~ 6cm kure yumusaraba;
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(3) Gupima umuraba uhagaze muri 430 ~ 440mhz, buri 2mhz, hanyuma ukore igishushanyo cyangwa urutonde rwamakuru yapimwe.
. Niba inshuro ni ndende cyane cyangwa irenga cyane, umuraba uhagaze urashobora gupimwa nongeye gupimemo osciillator ikora milimetero imwe cyangwa ngufi;
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Iyo Antenne yahinduwe, uhindure ahantu hamwe icyarimwe, kuburyo byoroshye kubona itegeko ryimpinduka. Kubera inshuro ndende yakazi, amplitude yo guhinduka ntabwo ari nini cyane. Kurugero, ubushobozi bwahinduwe bwumufasha mwiza uhuza urukurikirane kuri γ mukabari 3 ~ 4PF, hamwe nimpinduka za cumi na kimwe cya cumi (pF) bizatera impinduka zikomeye muri stave. Byongeye kandi, ibintu byinshi nkuburebure bwumurongo numwanya wumugozi nabyo bizagira ingaruka runaka kubipimo bihagaze, bigomba kwitabwaho muburyo bwo guhinduka.
Igihe cyo kohereza: Nov-30-2022
