Amahame y'Ubuziranenge bwa PCB akoreshwa kenshi yasobanuwe | Ibisobanuro ku bijyanye n'imikorere ya RF PCB

Intangiriro

Mu nganda z'ikoranabuhanga zigenda zitera imbere vuba muri iki gihe, PCB zifite umurongo wo hejuru ni ingenzi cyane mu bikorwa nko mu itumanaho rya 5G, uburyo bwo kugenzura ibyogajuru, sisitemu za radar, n'ibikoresho by'ikoranabuhanga bigezweho. Imikorere y'izi sisitemu ishingiye cyane ku bwiza bwa PCB, bigatuma kubahiriza amahame meza y'ubuziranenge ari ingenzi cyane. Uko ibitegerejwe ku mikorere y'ibikoresho by'ikoranabuhanga bizamuka, ni nako amahame ya RF na PCB zifite umurongo wo hejuru yiyongera. Ku bahanga mu gushushanya PCB, gusobanukirwa no kugera kuri izi ngingo ni ingenzi mu guteza imbere ibikoresho by'ikoranabuhanga byizewe kandi bitanga umusaruro mwiza.

Amahame y'ingenzi y'ubuziranenge ku bikoresho bya PCB bifite isura yo hejuru

1. Ibipimo ngenderwaho by'imikorere y'amashanyarazi

Kugenzura Impedansi Idasanzwe

Imiyoboro ifite umurongo munini isaba kugenzura neza impedance idasanzwe, akenshi iri hagati ya ± 5% by'icyitegererezo cy'igishushanyo. Urugero, PCB za 5G base station akenshi zikenera impedance ya 50Ω cyangwa 75Ω. Guhindagurika bishobora gutuma ibimenyetso bigaruka, bigabanura ubuziranenge bw'ibimenyetso, bikagabanya umuvuduko wo kohereza amakuru, ndetse bikongera igipimo cy'amakosa ya bit. Kugira ngo bakomeze gukoresha neza impedance, abashushanya bagomba kumenya neza ubugari bw'inyandiko, intera iri hagati y'inyandiko, ubugari bwa dielectric, n'ibikoresho byatoranijwe bifite dielectric constants zihamye (Dk).

Igihombo cyo kohereza ibimenyetso

Gutakaza ikimenyetso ntibishobora kwirindwa mu ihererekanyamakuru rifite umurongo munini w’itumanaho kandi harimo igihombo cya conductor na dielectric. Ku murongo wa milimetero-wave (urugero, 24GHz–52GHz), igihombo cyacyo kigomba kugabanywa—ubusanzwe kigomba kubikwa hagati ya 0.5dB na 1dB kuri santimetero. Gukoresha ibikoresho bya "low dissipation factor (Df)" nka Rogers RO4350B（, hamwe no gutunganya neza PCB hamwe n'imiterere y'amakuru, bishobora kugabanya cyane uburyo ibimenyetso bigabanuka.

Guhagarika ibiganiro birambuye

Uburyo bwo kugabanya ibimenyetso by’urumuri, cyangwa uburyo bwo kuvugana ku buryo bunyuranyije n’amategeko, bushobora kwangiza uburyo ibimenyetso by’urumuri bikoresha frequency yo hejuru. Ibipimo nka NEXT (Near-End Crosstalk) na FEXT (Far-End Crosstalk) bikoreshwa mu gusuzuma uburyo ibintu binyuranyije n’amategeko. Amabwiriza y’inganda asaba ko NEXT iri munsi ya -30dB na FEXT iri munsi ya -40dB. Kugabanya neza uburyo ibintu binyuranyije n’amategeko bikubiyemo kongera intera hagati y’uburyo ibintu binyuranyije n’amategeko, gushyira mu bikorwa indege zo ku butaka cyangwa kurinda, no kunoza imiterere y’inzira.

2. Amahame ngenderwaho y'imiterere

Ubuziranenge bw'ibipimo

Kugira ngo sisitemu ihuzwe neza, PCB zifite frequency yo hejuru zisaba ubushobozi bwo kwihanganira ibintu mu buryo buhamye. Ubunini bw'ikibaho bugomba kugenzurwa muri ± 0.05mm, naho uburebure bw'umwobo bugagenzurwa muri ± 0.02mm. Gutunganya neza no kugenzura neza uburyo ibintu bikorwamo ni ingenzi kugira ngo ibi bipimo bigerweho—kunanirwa bishobora gutera ibibazo byo guteranya no kwangirika k'imikorere.

Igorofa ry'ikibaho

Ubugari bugira ingaruka zitaziguye ku bwiza bw'uburinzi bw'icyuma no kudahindagurika kw'ibimenyetso. Amahame ngenderwaho mu nganda akunze kugabanya ubugari bw'icyuma kugeza munsi ya 0.5%. Imikorere ya lamination igenzurwa (ubushyuhe, umuvuduko, igipimo cyo gukonjesha) hamwe n'ibice by'inyuma byakozwe neza bifasha kugumana ubugari. Ubugari butari bwiza bushobora gutera inenge zo gusoda no guhinduka kw'impedance bitewe n'ihindagurika ry'ibice.

3. Amahame ngenderwaho yo kwizerwa

Kurwanya ibidukikije

PCB zifite frequency yo hejuru zigomba kwihanganira ubushyuhe, ubushuhe, n'ibidukikije byangiza. Urugero, munsi ya 85°C/85% RH mu gihe cy'amasaha 1000, imikorere y'amashanyarazi n'imiterere y'inyubako igomba kuguma ihamye. Ingamba zo kurinda nko gupfuka udupfukamunwa two mu rwego rwo hejuru, kurangiza ubuso bwa ENIG, n'imyambaro y'ubushuhe/inzitizi bifasha mu kongera uburambe bw'ibidukikije.

Kwizerwa kw'ibice bya Solder

Ingingo zo gusora zigize isano ikomeye hagati y’ibice na PCB. Zigomba kwihanganira stress ya mekanike n’imikorere y’ubushyuhe (urugero, -40°C kugeza 125°C, cycles 1000) nta gucika cyangwa gutandukana. Kugenzura ko gusora bishobora gusora, ubushyuhe bukwiye, no kurangiza neza ubuso ni ingenzi kugira ngo ingingo zikomere.

Isesengura ry'inenge: Impamvu, Ibimenyetso, n'Icyuho mu Mikorere

1. Ihungabana ry'imikorere y'amashanyarazi

Ibimenyetso: Ihererekanya ry'amajwi ritameze neza, kugabanuka cyane kw'amajwi, kugaragara cyane kw'amajwi, cyangwa kuvugana ku buryo budasanzwe. Ibikoresho byo gupima bishobora kugaragaza imiterere y'imiraba idasobanutse neza, kugabanuka k'ubwinshi bw'amajwi, cyangwa urusaku rwinshi.

Impamvu: Imiterere idahwitse ya impedance, uburebure cyangwa ubucucike bukabije, ibikoresho bidakwiye (urugero, Dk idahamye cyangwa Df nyinshi), kugenzura nabi gushushanya, cyangwa ubugari bwa dielectric budahwanye.

Icyuho mu mikorere: Ibikoresho byubahiriza amabwiriza bishyigikira ihererekanyamakuru ryihuse kandi rihamye. Ibikoresho bifite inenge bishobora gutuma habaho ikibazo cy’itumanaho no gukwirakwiza amakuru, cyane cyane muri sitasiyo za 5G.

2. Inenge z'imiterere y'umubiri

Ibimenyetso: Kutagera ku murongo mu gihe cyo guteranya, kuzunguruka kw'ikibaho, ingano y'umwobo utari wo cyangwa utumvikana. Ibikoresho byo gupima cyangwa ibipimo (urugero, calipers, gupima 2D optical) bishobora kugaragaza izi nenge.

Impamvu: Ubuziranenge buke bw'ibikoresho, isuku idahagije, umuvuduko utaringaniye wo gufunga, gukonjesha vuba, cyangwa utubuto tw'imashini tudakora neza.

Icyuho mu mikorere: PCB zikora neza mu miterere yazo zituma zifatana neza kandi zigahuza neza n'amashanyarazi, mu gihe imbaho ​​zifite inenge zongerera ibyago byo kwangirika kw'imikorere, kwangirika kw'ingingo, no gucika kw'inzira y'ibimenyetso.

3. Ibibazo byo kwizerwa

Ibimenyetso: Gucika kw'ingingo zisoda, kwangirika, kwangirika kw'ingingo, cyangwa kwangirika kw'ibikoresho byo gukingira. Isuzuma rya mikorosikope n'ibizamini byo kwirinda ibikoresho byo gukingira bigaragaza bene ibyo bibazo.

Impamvu: Gufata nabi ubuso, imiterere idahwitse yo gusora, cyangwa guhura n'ubushyuhe bwinshi, ubushuhe bwinshi, cyangwa ibidukikije bifite imiti mu gihe cyo kubika cyangwa gukora.

Icyuho mu mikorere: PCB zizewe cyane zikora neza mu bidukikije bikomeye, ni ingenzi cyane mu by’indege n’ibikoresho by’ikoranabuhanga mu buvuzi. Ibyuma bizewe bike byongera igihe cyo kudakora, ikiguzi cyo kubungabunga, kandi bishobora guteza ingaruka zikomeye mu mikorere.

Ibyishimo Byuzuye: Umufatanyabikorwa wawe wizewe wa PCB ufite ihinduka ryinshi

Rich Full Joy imaze imyaka myinshi ikora RF no gukora PCB mu buryo bworoshye, yateje imbere ubuhanga bwimbitse mu bya tekiniki. Duhuza neza n'amahame meza y'ubuziranenge binyuze mu bikoresho bigezweho byo gukora, sisitemu nziza z'ubuziranenge, n'ubumenyi bufatika mu nganda. Ibicuruzwa byacu byakozwe kugira ngo bihuze n'ibikenewe cyane muri 5G, indege, ibyogajuru, radar, n'ibindi.

Turatumira injeniyeri zose z’ibishushanyo mbonera bya PCB kudukurikira kugira ngo dukomeze gusobanukirwa ikoranabuhanga rigezweho rya PCB rituma habaho udushya n’ubwizerwe.