Iyo kuburikidza-gomba pachayo ine parasitic capacitance pasi.Kana iyo dhayamita yegomba rekuzviparadzanisa riri papasi pegomba rinozivikanwa seD2, dhayamita yeburi rekuburikidza padhi iD1, ukobvu hwePCB board ndiT, uye dielectric inogara yebhodhi substrate. is ε, The parasitic capacitance ye via ingangoita C=1.41 ε TD1/(D2-D1)
Chikuru chinokonzeresa cheparasitic capacitance padunhu chinokonzerwa nevias ndechekuti inorebesa chiratidzo chenguva uye inoderedza kumhanya kwedunhu.Semuenzaniso, yePCB board ine gobvu re50 Mil, kana vias ine mukati dhayamita ye10 Mil uye pad dhayamita ye20 Mil inoshandiswa, uye chinhambwe chiri pakati pepedhi nenzvimbo yemhangura iri pasi i32 Mil. , tinokwanisa kuverengera parasitic capacitance ye vias tichishandisa formula iri pamusoro seizvi: C=1.41 x 4.4x 0.050 x 0.020/(0.032-0.020)=0.517pF, The rise time variation inokonzerwa necapacitance iyi ndeiyi: T10-90 =2.2C (Z0/2)=2.2x0.517x (55/2)=31.28ps.Kubva pane izvi zvakakosha, zvinogona kuonekwa kuti kunyange zvazvo simba reparasitic yeimwe nzira inogona kunge isina chinhu chakakosha pakuderedza kukwira, kuchenjerera kunofanira kushandiswa kana vias inoshandiswa kakawanda mu wiring ye interlayer switching.
Pamwe chete neiyo parasitic capacitance mune iyo via, kune zvakare parasitic inductance.Iyo parasitic series inductance inoderedza mupiro we bypass capacitance uye inoderedza kushanda kwesefa kwesimba rose remagetsi.Iyi inotevera fomula inogona kushandiswa kungoverengera fungidziro yeparasitic inductance kuburikidza ne:
L=5.08h [ln (4h/d)+1], apo L inoreva kupinza kweburi, h ndiko kureba kweburi, uye d ndiko kureba kwegomba repakati.Kubva paequation, zvinogona kuoneka kuti dhayamita yeVia ine diki mhedzisiro pane inductance, nepo kureba kweiyo via kune yakanyanya kukanganisa pane inductance.Uchishandisa muenzaniso wepamusoro, inductance yeiyo via inogona kuverengerwa seL=5.08x0.050 [ln (4x0.050/0.010)+1]=1.015nH.Kana nguva yekusimuka kwechiratidzo iri 1ns, saka yakaenzana impedance saizi ndeye: XL=π L/T10-90=3.19 Ω.
Muchidimbu:
Kusarudza PCB yakaonda kunobatsira pakudzikisa parasitic parameter
Edza kusachinjisa maseru kana kushandisa zvisina kufanira vias pachiratidzo chekufambisa
Dhonza maburi padyo nemagetsi uye pasi, uye kupfupika nekukora waya yemakomba nemapini, zviri nani.
Isa mamwe maburi epasi pedyo nechiratidzo chekuchinja mutsara kuti upe dunhu riri pedyo rechiratidzo
Paunenge uchigadzira akateedzana optical fiber zvigadzirwa, senge optical module,ONU, optical fiber module, OLT module, zvichingodaro, iwe unofanirwa kufunga nezvekukanganisa kwevias pa bosa, kuendesa dhiyagiramu yeziso, kutsakatika kwereshiyo, nezvimwewo, kana kukanganisa kwekugamuchira kunzwa.
Izvo zviri pamusoro apa ipfupi pfupiso ye "Sumo kune Key Parameters yeBOSA - kuburikidza nehukuru (II)", iyo inogona kushandiswa sereferensi.Kambani yedu ine yakanyatsosimba tekinoroji timu uye inogona kupa nyanzvi tekinoroji masevhisi kune vatengi.Parizvino, kambani yedu ine zvigadzirwa zvakasiyana-siyana: zvakangwaraonu, kutaurirana optical module, optical fiber module, sfp optical module, olt midziyo, Ethernet switch uye zvimwe network michina.Kana uchida, unogona kudzidza zvakawanda pamusoro pavo.
