Cov teeb liab kev ncaj ncees yog ib qho tseem ceeb ntawm PCB tsim, tshwj xeeb tshaj yog rau cov PCB nruj-flex. Cov kab hluav taws xob tshwj xeeb no muab cov kev hloov pauv thiab kev ntseeg siab xav tau hauv cov khoom siv hluav taws xob niaj hnub no. Txawm li cas los xij, vim nws cov qauv tsis yooj yim, ua kom muaj kev ncaj ncees ntawm cov teeb liab hauv kev nruj-flex PCB tsim tuaj yeem nyuaj.
Hauv tsab ntawv tshaj tawm no, peb yuav tham txog cov ntsiab lus tseem ceeb uas yuav tsum tau xav txog thiab cov kauj ruam cuam tshuam thaum xam cov teeb liab kev ncaj ncees rau cov qauv nruj-flex PCB.
1. Nkag siab lub hauv paus ntawm lub teeb liab kev ncaj ncees
Teeb liab kev ncaj ncees yog hais txog qhov zoo ntawm cov teeb liab hluav taws xob thaum lawv dhau los ntawm PCB. Nws suav nrog kev tshuaj xyuas thiab tswj ntau yam uas tuaj yeem cuam tshuam cov teeb liab kev ua tau zoo, xws li impedance, suab nrov, crosstalk, thiab kev xav.
Rau rigid-flex PCBs uas ua ke nruj thiab hloov tau yooj yim substrates, teeb liab kev ncaj ncees tseem ceeb dua. Kev hloov pauv ntawm cov ntu nruj thiab hloov pauv tuaj yeem qhia txog kev hloov pauv impedance, teeb liab attenuation, thiab lwm yam teeb meem kev ncaj ncees.
2. Txheeb xyuas cov cim tseem ceeb
Thawj kauj ruam hauv kev suav cov teeb liab kev ncaj ncees yog txhawm rau txheeb xyuas cov teeb meem tseem ceeb hauv kev tsim PCB nruj-flex. Cov teeb liab no yog qhov tseem ceeb tshaj plaws rau cov teeb meem kev ncaj ncees thiab tej zaum yuav suav nrog cov teeb liab ceev ceev, moos teeb liab, lub zog xa hluav taws xob, lossis lwm yam teeb liab tseem ceeb rau kev ua haujlwm ntawm lub cuab yeej.
Los ntawm kev tsom mus rau cov teeb meem tseem ceeb, koj tuaj yeem ua qhov tseem ceeb ntawm kev tsom xam thiab txo cov teeb meem kev ncaj ncees.
3. Txheeb xyuas impedance tswj
Kev tswj hwm impedance yog qhov tseem ceeb rau kev tswj cov teeb liab kev ncaj ncees. Nws ua kom ntseeg tau tias qhov impedance ntawm cov teeb liab kab sib tw nrog cov yam ntxwv impedance ntawm cov kab sib kis tau siv. Nyob rau hauv nruj-flex PCBs, kev hloov impedance yuav tshwm sim ntawm qhov kev hloov pauv ntawm qhov nruj thiab hloov tau.
Txhawm rau xam impedance thiab txheeb xyuas nws cov kev tswj hwm, koj tuaj yeem siv lub laij lej impedance, simulation cuab yeej, lossis sab laj cov ntaub ntawv los ntawm PCB cov chaw tsim khoom. Los ntawm kev suav kom raug thiab tswj cov impedance, cov teeb liab kev cuam tshuam tuaj yeem raug txo kom tsawg, ua kom cov teeb liab kis tau zoo dua.
4. Simulate thiab txheeb xyuas cov teeb liab kev ncaj ncees
Kev simulation yog lub cuab yeej muaj zog rau kev txheeb xyuas cov teeb liab kev ncaj ncees hauv PCB tsim. Los ntawm kev siv software tshwj xeeb, koj tuaj yeem simulate tus cwj pwm ntawm cov teeb liab thiab txheeb xyuas cov teeb meem kev ncaj ncees ua ntej tsim khoom.
Kev simulation tuaj yeem pab koj ntsuas qhov tsis xws li daim duab qhov muag, qhov yuam kev me ntsis, thiab cov teeb liab kev ntseeg siab. Nws tso cai rau koj los ntsuas cov xwm txheej sib txawv, ua kom zoo dua tracerouting, thiab siv tau koj cov kev xaiv tsim.
5. Txo kev sib tham tsawg
Crosstalk tshwm sim thaum cov teeb liab cuam tshuam rau ib leeg vim yog electromagnetic coupling ntawm cov neeg nyob ib sab. Nyob rau hauv nruj-flex PCBs, tswj crosstalk yog qhov nyuaj dua vim qhov ze ntawm cov neeg xyuas pib hauv thaj tsam flex.
Txhawm rau txo qis kev sib tham, koj tuaj yeem siv cov tswv yim xws li nce qhov sib nrug ntawm cov kab, siv hauv av lossis lub dav hlau fais fab raws li cov ntaub thaiv npog, ntxiv cov ntaub ntawv sib cais, lossis siv cov kev tswj cov kab khiav tawm.
6. Xav txog cov teeb liab sib txawv
Differential signaling yog cov cuab yeej siv tau zoo rau kev xa cov ntaub ntawv ceev. Los ntawm kev siv ob lub cim ntxiv ntawm qhov sib npaug ntawm qhov sib npaug tab sis qhov sib txawv polarity, nws muab lub suab nrov tiv thaiv thiab txo qhov kev pheej hmoo ntawm cov teeb liab degradation.
Nyob rau hauv nruj-flex PCB tsim, siv cov sib txawv khub pab tswj cov teeb liab kev ncaj ncees thiab txo cov electromagnetic cuam tshuam. Txawm li cas los xij, kev saib xyuas yuav tsum tau ua kom ntseeg tau tias muaj kev sib npaug ntawm impedance thiab tswj kev offset ntawm cov khub sib txawv.
7. Rov xyuas cov qauv tsim
Kev txheeb xyuas kev tsim qauv yog ib qho txheej txheem rov ua dua uas suav nrog kev sim ua kom rov ua dua, tshuaj xyuas, thiab ntsuas tus qauv PCB. Nws pab txheeb xyuas thiab daws teeb meem teeb meem kev ncaj ncees ntawm ntau theem ntawm tus txheej txheem tsim.
Los ntawm kev ua cov kev tshuaj xyuas cov qauv tsim, cov teeb liab simulation kev ncaj ncees, thiab kev sim qauv, koj tuaj yeem xyuas kom meej tias koj tus qauv tsim PCB nruj raws li qhov yuav tsum tau muaj cov teeb liab kev ncaj ncees.
Hauv cov ntsiab lus
Kev suav cov teeb liab kev ncaj ncees ntawm tus qauv nruj-flex PCB suav nrog kev nkag siab txog nws cov kev sib tw tshwj xeeb, tshuaj xyuas cov teeb meem tseem ceeb, tswj impedance, txo qis crosstalk, thiab rov ua dua tus qauv tsim. Los ntawm kev ua raws li cov kauj ruam no thiab siv cov cuab yeej simulation thiab cov txheej txheem pov thawj, koj tuaj yeem ua kom muaj kev ncaj ncees ntawm cov teeb liab hauv cov qauv nruj-flex PCB.
Post lub sij hawm: Sep-19-2023
Rov qab
