Kev kub ceev PCB POFV ntxig tsis kuaj enepig| YMSPCB

 Dab tsi yog High Speed ​​PCB?

"High Speed" feem ntau txhais tau hais tias lub circuits qhov ntev ntawm lub teeb liab nce los yog ntog ntug yog ntau tshaj li ib-rau ntawm cov kab sib txuas ntev dua li qhov ntev ntawm cov kab sib txuas, ces cov kab sib kis ntev qhia tau hais tias tus cwj pwm lumped.

Nyob rau hauv lub siab ceev PCB , lub sij hawm nce yog ceev txaus uas lub bandwidth rau cov teeb liab digital yuav txuas mus rau lub siab MHz los yog GHz zaus. Thaum qhov no tshwm sim, muaj qee yam teeb meem teeb meem uas yuav pom yog tias lub rooj tsav xwm tsis tsim los siv cov kev cai tsim PCB ceev. Hauv particular, ib tug yuav pom tau tias:

1. Lub suab nrov nrov tsis txaus ntseeg. Qhov no feem ntau tshwm sim thaum cov kab tsis dav txaus, txawm hais tias koj yuav tsum tau ceev faj thaum ua kom koj cov kab dav dav (saib ntu ntawm Impedance Contorl hauv PCB Tsim hauv qab). Yog hais tias lub suab nrov nrov yog loj heev, koj yuav muaj kev kub ntxhov loj lossis qis qis hauv koj cov teeb liab hloov pauv.

2. Muaj zog crosstalk. Raws li lub teeb liab ceev nce (piv txwv li, raws li lub sij hawm nce zuj zus), capacitive crosstalk tuaj yeem ua tau loj heev raws li qhov cuam tshuam tam sim no tau ntsib capacitive impedance.

3.Reflections tawm ntawm cov tsav tsheb thiab cov khoom txais. Koj cov teeb liab tuaj yeem cuam tshuam los ntawm lwm yam khoom thaum twg muaj qhov tsis sib haum xeeb impedance. Txawm hais tias qhov impedance tsis sib haum yog qhov tseem ceeb yuav tsum tau saib ntawm qhov kev tawm tswv yim impedance, load impedance, thiab cov kab sib kis tus yam ntxwv impedance rau kev sib tshuam. Koj tuaj yeem nyeem ntxiv txog qhov no hauv nqe lus hauv qab no.

4.Power integrity teeb meem (hloov PDN ripple, av thaws, thiab lwm yam). Qhov no yog lwm txheej teeb meem uas tsis tuaj yeem zam tau hauv ib qho kev tsim. Txawm li cas los xij, ib ntus PDN ripple thiab ib qho txiaj ntsig EMI tuaj yeem txo qis los ntawm kev tsim qauv tsim nyog thiab kev txiav txim siab. Koj tuaj yeem nyeem ntxiv txog kev kub ceev PCB stackup tsim tom qab hauv phau ntawv qhia no.

5. Muaj zog ua thiab tawg EMI. Kev kawm txog kev daws teeb meem EMI yog qhov dav, ob qho tib si ntawm qib IC thiab qib siab ceev PCB tsim. EMI yog qhov tseem ceeb ntawm kev sib koom ua ke; Yog tias koj tsim koj lub rooj tsavxwm kom muaj zog EMI tiv thaiv, ces nws yuav tawm EMI tsawg dua. Ntxiv dua thiab, feem ntau ntawm qhov no npau taws los tsim cov txheej txheem PCB.

High-frequency PCBs feem ntau muab ntau zaus ntawm 500MHz mus rau 2 GHz, uas tuaj yeem ua tau raws li cov kev xav tau ntawm high-speed PCB designs, microwave, radiofrequency, thiab mobile applications. Thaum qhov zaus siab tshaj 1 GHz, peb tuaj yeem txhais nws raws li qhov siab zaus.

Qhov nyuaj ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob tau txuas ntxiv mus rau niaj hnub no thiab xav tau cov teeb liab ntws nrawm dua. Yog li, yuav tsum muaj kev sib kis ntau dua. High-frequency PCBs pab tau ntau heev thaum muab cov teeb liab tshwj xeeb rau hauv cov khoom siv hluav taws xob thiab cov khoom siv nrog qhov zoo xws li kev ua haujlwm siab, thiab nrawm nrawm, qis qis qis, thiab cov khoom siv hluav taws xob tas li.Qee qhov kev txiav txim siab ntawm high-frequency PCBs designs

High-frequency PCBs yog siv nyob rau hauv xov tooj cua thiab high-ceev digital daim ntaub ntawv, xws li 5G wireless kev sib txuas lus, automotive radar sensors, aerospace, satellites, thiab lwm yam. Tab sis muaj ntau yam tseem ceeb yuav tsum tau xav txog thaum tsim high-frequency PCBs.

· Kev tsim ntau txheej

Peb feem ntau siv ntau txheej PCBs hauv cov qauv PCB siab. Multi-layered PCBs muaj kev sib dhos ceev thiab ntim me me, ua rau lawv tsim nyog rau cov pob khoom. Thiab cov boards ntau txheej yog yooj yim rau kev sib txuas ntawm cov khoom siv hluav taws xob thiab txhim kho qhov ceev ntawm cov teeb liab kis tau tus mob.

Kev tsim lub dav hlau hauv av yog ib qho tseem ceeb ntawm cov ntawv thov ntau zaus vim nws tsis tsuas yog tswj cov teeb liab zoo tab sis kuj tseem pab txo qis EMI hluav taws xob.High zaus pawg thawj coj saib rau kev siv wireless thiab cov ntaub ntawv tus nqi nyob rau sab sauv GHz ntau yam tshwj xeeb xav tau ntawm cov khoom siv:

1. Kho kom haum.

2.Low attenuation rau cov teeb liab kis tau zoo.

3.Homogeneous kev tsim kho nrog tsawg tolerances nyob rau hauv rwb thaiv tsev thickness thiab dielectric tas li. Qhov kev thov rau high-frequency thiab high-speed PCB cov khoom tau nce sai heev niaj hnub no. Raws li kev paub txog PCB chaw tsim tshuaj paus , YMS tau tsom mus rau kev muab cov neeg siv khoom nrog kev txhim khu kev qha PCB prototyping nrog cov khoom zoo. Yog tias koj muaj teeb meem nrog PCB tsim lossis PCB tsim, thov koj xav tiv tauj peb.