Uburyo bwo Guhindura Seriveri y'amashanyarazi PCB Itara ry'imodoka PCB igenzura impedance PCB prototype
Uburyo bwo Guhindura Seriveri y'amashanyarazi PCB Itara ry'imodoka PCB igenzura impedance PCB prototype
UKO IBICURUZWA BIGENDA:
| Ibikoresho by'ibanze: | FR4 TG130 |
| Ubunini bwa PCB: | 1.6+/- 10% mm |
| Umubare w'ibice: | 8L |
| Ubunini bw'umuringa: | 1/1/1/1/1/1/1/1 oz |
| Ubugari/intera nto y'umurongo: | 3.6/4 by'ibihumbi |
| Umwobo muto: | 0.2mm |
| Uburyo bwo kuvura ubuso: | 1U GUSA |
| Agapfukamunwa ko gusoda: | Umukara |
| Silkscreen: | Umweru |
| Agace ko gusaba: | Kamera idakoresha umugozi, ikibaho cyo kohereza amashusho ya kamera |
Isesengura ry'Igishushanyo n'Uruganda rw'Ikibaho cyo Gukwirakwiza Videwo mu buryo bw'Ubucucike Bukomeye kandi Bukora ku Gipimo cy'Uburyo
Iyi circuit board ni PCB ifite ubucucike bwinshi bw'ibice 8 yagenewe modules za kamera/videwo zidafite insinga zikoreshwa mu buryo bw'umwuga. Iyi solution ikoresha ibikoresho bya FR4 TG130 bifite imikorere myiza kandi ikurikiza cyane inzira z'ingenzi nko kuba ifite ubugari bwa 1.6mm, uburemere bwa ounce 1 y'umuringa, ubuso bwa zahabu bwo kuzura bwa 1-microinch, hamwe na vias zuzuye resin. Igishushanyo mbonera cyibanda ku buziranenge bw'ibimenyetso byihuse, ubuziranenge bw'ingufu, no kugenzura impedance cyane kugira ngo bitange urubuga rwizewe rwo kohereza videwo zidafite insinga zidafite insinga kandi zitinda cyane.
Ubudahangarwa bw'ubushyuhe bwinshi:
Ubushyuhe bw'impinduka mu kirahure (Tg) bugera kuri dogere selisiyusi 130, butuma substrate iguma neza kandi ikagira amashanyarazi mu gihe cy'ikoreshwa ry'imashini itwara amashanyarazi rirambye. Ibi birinda ibibazo nko koroshya substrate, gutandukanya, cyangwa guhindagurika kw'impedance biterwa n'ubushyuhe bwinshi.
Imikorere myiza y'amashanyarazi:
Mu gice cya 1–6 GHz gikunze gukoreshwa mu kohereza amashusho, dielectric constant (Dk) na dissipation factor (Df) bigumaho neza. Ibi byoroshya kugenzura impedance neza kandi bigabanya igihombo cyo kohereza ibimenyetso, ibi bikaba ari ingenzi cyane mu kubungabunga ubwiza bw'ibimenyetso bya videwo.
Igishushanyo mbonera cya Stackup:
Urubaho rufite urwego 8 rufite ubugari bwa mm 1.6, hamwe n'urwego rw'imbere n'urw'inyuma rukoresha umuringa wa 1-ounce (~ 35μm). Ubu bunini buhuza ubushobozi bwo gutwara umuriro hamwe n'ubushobozi bwo gutunganya umurongo muto.
Ubugari n'intera ntoya y'umurongo:
Ubugari bw'aho ibintu biherereye ni 3.6 mil (≈0.091mm), naho intera y'aho ibintu biherereye ni 4 mil (≈0.102mm). Ibi bipimo byujuje ibisabwa mu gukoresha uburyo bwo gukwirakwiza ibintu mu buryo bucucitse hakoreshejwe uburyo bugezweho bwo gukwirakwiza ibintu mu buryo bugezweho hamwe na RF chip BGA package, bigatuma insinga z'amashanyarazi zikora mu buryo buciriritse mu mwanya muto.
Binyuze mu gushushanya no gutunganya:
Ingano ntoya ya diameter ni 0.2mm (≈8mil), ibipimo bisanzwe ku mbaho zifite ubucucike bwinshi zikoreshwa mu guhuza ibimenyetso n'ingufu.
Uburyo bwo Kuzuza Resin (Binyuze mu Gucomeka)Iki ni ikintu cy'ingenzi. Gushyiramo resin birinda neza imiyoboro migufi iterwa n'ibisigazwa by'udupira tw'umuhondo mu gihe cyo gusora mu mashanyarazi kandi bigatanga ubuso burambuye bwo gukora igishushanyo cya "via-in-pad" gikurikiraho (ni ngombwa mu gutuma inzira inyura munsi ya BGA nziza cyane), byoroshya gushyira ibice byayo. Byongeye kandi, bikuraho umuyaga ushobora gutuma ibimenyetso bigaruka, bityo bikanoza ubuziranenge bw'ibimenyetso ku bimenyetso byihuse kandi bikanoza uburyo byizewe.
Kurangiza ubuso:
Gukoresha Electroless Nickel Immersion Gold (ENIG) ya 1-microinch itanga ubushobozi bwo kugorora, kurwanya oxidation, ndetse n'ubuso buhamye bwo gusonerwa. Ibi birakwiriye cyane cyane ku miyoboro ya RF ishobora kwangirika bitewe n'igihombo n'ibihe bisaba gucomeka no gucomeka kenshi mu gihe cyo kugerageza.
Amatsinda menshi yo kugenzura impedance:
Akabaho ko kohereza amashusho gahuza ibimenyetso bitandukanye nka videwo ya digitale, kugenzura umuvuduko wo hejuru, na analog RF, bigatuma kugenzura impedance mu buryo bukomeye ari ngombwa.
Mu gukoresha FR4 TG130 laminate, imiterere y’ibice 8 ifite ubugari bwa mm 1.6, no guhuza inzira zinoze nka 3.6/4 mil trace width/intera, 0.2mm nibura unyuze mu murambararo, vias zuzuye resin, na 1µ" ENIG surface finished—hamwe no kugenzura impedance y’amatsinda menshi—urubuga rw’ibikoresho bikwiriye modules zo kohereza videwo zidafite umuvuduko mwinshi, zifite ubucucike bwinshi, kandi zizewe cyane zishobora kubakwa neza. Iki gisubizo cy’igishushanyo gihuza neza imikorere, ubushobozi bwo gukora, n’igiciro, gitanga urufatiro rukomeye rw’ibikoresho byo kohereza videwo bidafite umuvuduko mwinshi kandi bifite ubugari buke. Mu gihe cyo gukora PCB, ubufatanye bwa hafi n’uruganda rushoboye kugenzura neza ni ngombwa kugira ngo harebwe ko ibisabwa byose bya tekiniki, cyane cyane impedance n’ubwiza bwo kuzuza resin, bigerwaho neza.