Idan ma'auni na interlayer bai isa ba, za a rarraba filin lantarki a kan wani yanki mai girman gaske na allon, ta yadda maɗaukakin interlayer ya ragu kuma abin da ke dawowa zai iya komawa zuwa saman saman.A wannan yanayin, filin da wannan siginar ya haifar zai iya yin katsalanda ga filin siginar mai canza Layer kusa.Wannan ba shine abin da muka yi fata ba kwata-kwata.Abin takaici, akan allon 4-Layer na inci 0.062, yadudduka sun yi nisa kuma ƙarfin interlayer yana da ƙarami.
Lokacin da wayoyi suka canza daga Layer 1 zuwa Layer 4 ko akasin haka, to za a nuna wannan matsalar azaman hoto

Hoton yana nuna cewa lokacin da siginar ta kunna daga Layer 1 zuwa Layer 4 (layin ja), dole ne madaidaicin dawowar ya canza jirgi (layin shuɗi).Idan mitar siginar ya yi girma sosai kuma jiragen suna kusa da juna, halin da ake ciki na dawowa zai iya gudana ta hanyar ƙarfin interlayer wanda ke tsakanin layin ƙasa da ƙarfin wutar lantarki.Koyaya, saboda rashin haɗin kai tsaye don dawo da halin yanzu, hanyar dawowa ta katse, kuma zamu iya tunanin wannan katsewa a matsayin rashin ƙarfi tsakanin jiragen da aka nuna kamar hoton da ke ƙasa.

Idan ma'auni na interlayer bai isa ba, za a rarraba filin lantarki a kan wani yanki mai girman gaske na allon, ta yadda maɗaukakin interlayer ya ragu kuma abin da ke dawowa zai iya komawa zuwa saman saman.A wannan yanayin, filin da wannan siginar ya haifar zai iya yin katsalanda ga filin siginar mai canza Layer kusa.Wannan ba shine abin da muka yi fata ba kwata-kwata.Abin takaici, akan allon 4-Layer na inci 0.062, yaduddukan sun yi nisa (aƙalla inci 0.020), kuma ƙarfin interlayer ƙananan ne.A sakamakon haka, tsangwamar filin lantarki da aka kwatanta a sama yana faruwa.Wannan bazai haifar da lamuran amincin sigina ba, amma tabbas zai haifar da ƙarin EMI.Wannan shine dalilin da ya sa, lokacin amfani da cascade, muna guje wa canza yadudduka, musamman don sigina mai girma kamar agogo.
Al'ada ce ta gama gari don ƙara capacitor mai haɗawa kusa da ramin wucewa don rage abin da ya faru ta hanyar dawowar halin yanzu da aka nuna kamar hoton da ke ƙasa.Koyaya, wannan capacitor mai cirewa ba shi da tasiri ga siginar VHF saboda ƙarancin mitar sa da kai.Don siginonin AC tare da mitoci sama da 200-300 MHz, ba za mu iya dogara ga masu haɗa ƙarfi don ƙirƙirar hanyar dawowa mai ƙarancin ƙarfi ba.Sabili da haka, muna buƙatar capacitor mai yankewa (na ƙasa da 200-300 MHz) da ingantacciyar ma'auni mai girman allo don mafi girman mitoci.

Ana iya guje wa wannan matsalar ta rashin canza layin siginar maɓalli.Koyaya, ƙaramin ƙarfin allo na allo mai Layer huɗu yana haifar da wata babbar matsala: watsa wutar lantarki.Clock dijital ics yawanci yana buƙatar manyan igiyoyin wutar lantarki na wucin gadi.Yayin da lokacin tashi / faɗuwar fitowar IC ya ragu, muna buƙatar isar da makamashi a mafi girma.Don samar da tushen caji, yawanci muna sanya capacitors decoupling sosai kusa da kowane ma'ana IC.Duk da haka, akwai matsala: lokacin da muka wuce mitocin kai-da-kai, decoupling capacitors ba zai iya yadda ya dace don adanawa da canja wurin makamashi ba, saboda a waɗannan mitoci capacitor zai yi aiki kamar inductor.
Tunda yawancin ics a yau suna da saurin tashi / faɗuwar lokutan (kimanin 500 ps), muna buƙatar ƙarin tsarin gyarawa tare da mitar mai girman kai fiye da na capacitor na decoupling.Matsakaicin ma'auni na allon da'ira na iya zama ingantaccen tsari na yankewa, muddin yadudduka suna kusa da juna don samar da isasshen ƙarfin aiki.Don haka, ban da ma'auni da aka saba amfani da su na decoupling, mun gwammace mu yi amfani da yadudduka na wuta kusa da yadudduka na ƙasa don samar da wutar wucin gadi zuwa ics na dijital.
Lura cewa saboda tsarin masana'antar da'ira na gama gari, yawanci ba mu da insulators na bakin ciki tsakanin yadudduka na biyu da na uku na allon mai Layer huɗu.Allo mai Layer huɗu tare da insulators na sirara tsakanin layi na biyu da na uku na iya tsada da yawa fiye da allo mai Layer huɗu na al'ada.