Umuhengeri ubwawo ufite ubushobozi bwa parasitike hasi.Niba umurambararo wa umwobo wo kwigunga uri hasi yubwobo bizwi ko ari D2, diameter yumupanga unyuze ni D1, ubunini bwikibaho cya PCB ni T, hamwe na dielectric ihoraho yibibaho. ni ε, Ubushobozi bwa parasitike yinyuze hafi ya C = 1.41 ε TD1 / (D2-D1)
Ingaruka nyamukuru yubushobozi bwa parasitike kumuzunguruko uterwa na vias nuko yongerera igihe ibimenyetso kandi bikagabanya umuvuduko wumuzunguruko.Kurugero, kubibaho bya PCB bifite ubugari bwa Mil 50, niba hakoreshwa vias ifite diameter y'imbere ya Mil 10 na diameter ya padi ya Mil 20, kandi intera iri hagati ya padi nubutaka bwumuringa hasi ni 32 Mil , turashobora kubara hafi ubushobozi bwa parasitike ya vias dukoresheje formula yavuzwe haruguru kuburyo bukurikira: C = 1.41 x 4.4x 0.050 x 0.020 / (0.032-0.020) = 0.517pF, Itandukaniro ryigihe cyo kuzamuka ryatewe nubu bushobozi ni: T10-90 = 2.2C (Z0 / 2) = 2.2x0.517x (55/2) = 31.28ps.Duhereye kuri izo ndangagaciro, birashobora kugaragara ko nubwo ubushobozi bwa parasitike yumuntu umwe unyuze bishobora kutagira ingaruka zikomeye mukudindiza izamuka, hagomba kwitonderwa niba vias ikoreshwa inshuro nyinshi mugukoresha insimburangingo.
Hamwe nubushobozi bwa parasitike muburyo bwo kunyuramo, hariho na inductance ya parasitike.Induction ya parasitike igabanya uruhare rwa capacitance ya bypass kandi igabanya imbaraga zo kuyungurura imikorere ya sisitemu yose.Inzira ikurikira irashobora gukoreshwa mukubara gusa igereranya rya parasitike igereranijwe muri:
L = 5.08h.Uhereye kuburinganire, birashobora kugaragara ko diameter ya kunyura igira ingaruka nkeya kuri inductance, mugihe uburebure bwanyuze bugira ingaruka zikomeye kuri inductance.Ukoresheje urugero rwavuzwe haruguru, inductance ya the via irashobora kubarwa nka L = 5.08x0.050 [ln (4x0.050 / 0.010) +1] = 1.015nH.Niba igihe cyo kuzamuka kwikimenyetso ari 1ns, noneho ingano yacyo ihwanye ni: XL = π L / T10-90 = 3.19 Ω.
Muri make:
Guhitamo PCB yoroheje ni byiza kugabanya ibipimo bya parasitike
Gerageza kudahindura ibice cyangwa gukoresha vias bitari ngombwa kugirango uyobore ibimenyetso
Gucukura umwobo hafi yumuriro nubutaka, kandi bigufi kandi binini cyane insinga zumwobo na pin, nibyiza
Shyira umwobo mwinshi hafi yikimenyetso cyo guhinduranya kugirango utange uruziga rwegereye ibimenyetso
Mugihe ukora urukurikirane rwibikoresho bya fibre optique, nka module optique,ONU, optique fibre module, OLT module, nibindi, ugomba gutekereza ku ngaruka za vias kuri bosa, kwanduza igishushanyo cyamaso, igipimo cyo kuzimangana, nibindi, cyangwa ingaruka zo kwakira sensibilité
Ibyavuzwe haruguru ni incamake ya "Intangiriro Kuri Parameter Zibanze za BOSA - ukoresheje ubunini (II)", ushobora gukoreshwa nkibisobanuro.Isosiyete yacu ifite itsinda rya tekinike ikomeye kandi irashobora gutanga serivisi zubuhanga zumwuga kubakiriya.Kugeza ubu, isosiyete yacu ifite ibicuruzwa bitandukanye: bifite ubwengeonu, itumanaho rya optique module, optique ya fibre optique, sfp optique module, ibikoresho bya olt, Ethernet ihindura nibindi bikoresho byurusobe.Niba ukeneye, urashobora kwiga byinshi kuri bo.
