Wige kubyerekeye isaha kuri PCB

Reba ibitekerezo bikurikira kumasaha kurubaho:

1. Imiterere

a, isaha ya kristu hamwe nizunguruka bifitanye isano bigomba gutondekwa mumwanya wo hagati wa PCB kandi bikagira imiterere myiza, aho kuba hafi ya I / O. Umuzunguruko w'isaha ntushobora gukorwa mu ikarita yumukobwa cyangwa urupapuro rwumukobwa, ugomba gukorwa ku kibaho cyihariye cyangwa ku kibaho.

Nkuko bigaragara ku gishushanyo gikurikira, agasanduku kibisi igice cyakurikiyeho nibyiza kutagendera kumurongo

b, gusa ibikoresho bijyanye numuzunguruko wamasaha mugace ka PCB yisaha, wirinde gushyira indi mizunguruko, kandi ntugashyireho imirongo yerekana ibimenyetso hafi cyangwa munsi ya kristu: Koresha indege yubutaka munsi yumuzunguruko utanga amasaha cyangwa kristu, niba nibindi ibimenyetso byanyuze mu ndege, binyuranyije n’imikorere y’indege yashushanyije, niba ikimenyetso cyanyuze mu ndege y’ubutaka, hazabaho akazu gato k’ubutaka kandi bikagira ingaruka ku gukomeza kw’indege y’ubutaka, kandi ibyo bizunguruka bizatera ibibazo kuri radiyo nyinshi.

c. Kuri kristu yisaha nizunguruka zamasaha, ingamba zo gukingira zirashobora gufatwa mugukingira gutunganya;

d, niba isaha yisaha ari icyuma, igishushanyo cya PCB kigomba gushyirwa munsi yumuringa wa kirisiti, kandi ukemeza ko iki gice nindege yuzuye y'ubutaka bifite umurongo mwiza w'amashanyarazi (unyuze mubutaka).

Inyungu zo gushiraho munsi ya kristu yisaha:

Umuzunguruko uri imbere ya oscillator ya kristu itanga amashanyarazi ya RF, kandi niba kristu ifunze mumazu yicyuma, amashanyarazi ya DC niyo kwishingikiriza kumashanyarazi ya DC hamwe na RF ya loop yerekanwe imbere muri kristu, ikarekura umuyoboro wigihe gito wakozwe na Imirasire ya RF yimiturire ikoresheje indege yubutaka. Muri make, igikonoshwa cyicyuma ni antenne imwe irangiye, kandi igishusho cyegereye, igipande cyindege yubutaka ndetse rimwe na rimwe ibice bibiri cyangwa byinshi birahagije kugirango imishwarara ya radiyo ihindurwe hasi. Igorofa ya kirisiti nayo ni nziza yo gukwirakwiza ubushyuhe. Umuzenguruko w'isaha hamwe na kirisiti munsi bizatanga ikarita ya mapping, ishobora kugabanya uburyo busanzwe bugezweho butangwa na kristu hamwe nizunguruka ryisaha, bityo bikagabanya imirasire ya RF. Indege yubutaka nayo ikurura uburyo butandukanye RF igezweho. Iyi ndege igomba guhuzwa nindege yuzuye yubutaka n'amanota menshi kandi igasaba byinshi binyuze mu mwobo, bishobora gutanga inzitizi nke. Kugirango uzamure ingaruka ziyi ndege yubutaka, umuzenguruko wamasaha ugomba kuba hafi yindege yubutaka.

Amashanyarazi ya Smt apakiye azaba afite imirasire yingufu za RFI kuruta kirisiti yambaye ibyuma: Kubera ko kristu yubatswe hejuru yububiko ahanini iba ipaki ya pulasitike, umuyoboro wa RF uri imbere muri kristu uzasakara mu kirere kandi ugahuzwa nibindi bikoresho.

1. Sangira inzira yisaha

Nibyiza guhuza ibimenyetso byihuta byikimenyetso nicyapa cyinzogera hamwe na topologiya ya radiyo kuruta guhuza umuyoboro nisoko imwe ihuriweho nubushoferi, kandi buri nzira igomba kunyuzwa muguhagarika ingamba ukurikije inzitizi ziranga.

2, umurongo wohereza umurongo ibisabwa hamwe na PCB

Ihame ryo kugendera kumasaha: Tegura ishusho yuzuye yindege hafi yikibanza cyegereye isaha, gabanya uburebure bwumurongo kandi ukore igenzura.

Kwibeshya kwambukiranya ibice no kudahuza bishobora kuvamo:

1) Gukoresha umwobo no gusimbuka mu nsinga biganisha ku kudasobanuka kwishusho;

2) Umuvuduko mwinshi hejuru yindege yishusho bitewe na voltage kumurongo wibikoresho pin ihinduka hamwe no guhindura ibimenyetso;

3), niba umurongo udasuzumye ihame rya 3W, ibimenyetso byamasaha atandukanye bizatera umuhanda;

Gukoresha ibimenyetso by'isaha

1, umurongo wisaha ugomba kugenda murwego rwimbere rwibibaho byinshi PCB. Kandi wemeze gukurikiza umurongo wa lente; Niba ushaka kugendera kumurongo wo hanze, gusa umurongo wa microstrip.

2, urwego rwimbere rushobora kwemeza indege yuzuye ishusho, irashobora gutanga inzira-yohereza RF itambuka, kandi ikabyara magnetiki kugirango ihagarike imiyoboro ya magnetiki yumurongo wabo wohereza, niko wegera intera iri hagati yinkomoko ninzira yo kugaruka, ibyiza degaussing. Turashimira uburyo bwa demagnetisiyoneri yongerewe imbaraga, buri shusho yuzuye ya planar ishusho ya PCB itanga ubucucike bukabije PCB itanga 6-8dB.

3, ibyiza byubuyobozi bwinshi: hariho urwego cyangwa ibice byinshi birashobora kwitangira amashanyarazi yuzuye hamwe nindege yubutaka, birashobora gushushanywa muburyo bwiza bwo gukuramo, kugabanya ubuso bwubutaka, kugabanya uburyo butandukanye imirasire, kugabanya EMI, kugabanya urwego rwinzitizi yikimenyetso ninzira yo kugaruka, birashobora kugumya guhuza umurongo wose wangiritse, kugabanya inzira nyabagendwa.