FAQ

Timatcha PCB yokhala ndi ma frequency otumizira ma signal opitilira 1GHz kuti ndi bolodi losindikizidwa la liwiro lalikulu.

Zipangizo zopirira kutentha, zolimba pamakina, komanso zabwino (zodalirika)

Zipangizo zokhala ndi magawo okhazikika a Dk /Df (coefficient yaying'ono yosiyana ndi mafupipafupi ndi chilengedwe)

Zipangizo zokhala ndi ulamuliro wabwino wa impedance

Zipangizo zokhala ndi mawonekedwe ofooka a pamwamba pa zojambulazo zamkuwa

Kusankha nsalu yagalasi yokhala ndi mipata yaying'ono yopapatiza kumalimbikitsidwa.

Malangizo angapo pakupanga PCB yothamanga kwambiri afotokozedwa pansipa.

1) Gwiritsani ntchito mapulogalamu opanga mapangidwe okhala ndi njira zapamwamba

Mainjiniya ayenera kudziwa mapulogalamu opanga omwe angapereke njira zamakono. Zida zamapulogalamu zimafuna zinthu zambiri zamakono kuti athe kupanga ma PCB othamanga kwambiri mu mapulogalamu a CAD. Muyenera kumvetsetsa bwino zida zamphamvu za CAD.

2) Kutumiza uthenga mwachangu kwambiri

Ponena za njira yoyendetsera liwiro lalikulu, opanga mapulani ayenera kumvetsetsa malamulo oyendetsera njira zoyambira, kuphatikizapo kusadula zigawo zapansi ndikusunga njira yoyendetsera njira ifupi. Chifukwa chake, chonde pewani kulankhulana patali patali pa mizere ya digito ndikuteteza zinthu zonse zomwe zingasokoneze umphumphu wa chizindikiro.

3) Njira yoyendetsera ndi kuletsa kugwedezeka

Pa zizindikiro zina za pafupifupi 40-120 ohms, zimafunika kufananiza impedance. Kufananiza impedance komwe kumachitika kumawululidwa ndi ma antenna ndi ma differential pairs ambiri.

Opanga mapulogalamu ayenera kumvetsetsa momwe angawerengere m'lifupi mwa njira yolumikizirana ndi kuchuluka kofunikira kwa mtengo wa impedance. Ngati mtengo wa impedance si wolondola, ukhoza kukhala ndi vuto lalikulu pa chizindikiro, zomwe zingayambitse kuwonongeka kwa deta.

4) Ma track okhala ndi kutalika kofanana

Pali mizere yambiri mu basi yokumbukira yothamanga kwambiri komanso basi yolumikizirana. Mizere iyi imatha kugwira ntchito pama frequency apamwamba kwambiri, kotero chizindikirocho chiyenera kutumizidwa nthawi imodzi kuchokera kwa wotumiza kupita kwa wolandila. Kuphatikiza apo, chimafuna mawonekedwe otchedwa kutalika kofananiza. Chifukwa chake, miyezo yodziwika bwino imafotokoza za kulekerera komwe kumafunika kufananizidwa ndi kutalika.

5) Chepetsani dera la dera lobwerera lomwe lilipo

Opanga ma PCB othamanga kwambiri ayenera kutsatira malamulo oyambira, monga kupanga gawo losalekeza la pansi ndikuchepetsa dera la dera lobwerera kwa magetsi mwa kukonza njira yobwerera kwa magetsi yomwe ikuyenda, komanso kuyika ma vias ambiri osokedwa.

Maluso apamwamba opanga ma PCB othamanga kwambiri amaphunziridwa bwino, zomwe zimatsimikizira kuti chizindikirocho chili cholondola.

Zipangizo za ma PCB othamanga kwambiri zimasankhidwa bwino kuti zitsimikizire kuti kutumiza kwa chizindikiro kukuyenda bwino.

Kuwongolera kupanga kumachitika. Malo olamulira akuluakulu panthawi yopanga ndi m'lifupi mwa ma circuit, mtunda wa zigawo, ma vias ophimbidwa ndi mkuwa, makulidwe a ma circuit a mkuwa, makulidwe a chigoba chosungunula, ndi zina zotero.

Zinthu zotsatirazi zidzakhudza mtengo wa ma PCB othamanga kwambiri.

Zipangizo (zipangizo za substrate, makulidwe a substrate, makulidwe a mkuwa)

Zipangizo zopangira zomwe zimagwiritsidwa ntchito

Kuvuta kwa kupanga

Zofunikira za kasitomala

Njira yosankhidwa yopangira

Njira yotumizira yosankhidwa

Kapangidwe ka PCB kothamanga kwambiri ndi njira yovuta yomwe imafuna kuganizira mokwanira zizindikiro, impedance, mizere yotumizira, ndi zinthu zina zambiri zaukadaulo. Mfundo zaukadaulo zotsatirazi zingapereke tanthauzo.

Gwiritsani ntchito zigawo zambiri poyendetsa bwino.

Kafupikitsidwe ka lead pakati pa mapini a zida zoyendera zamagetsi zothamanga kwambiri, kumakhala bwino.

Ikani malo ozungulira pansi pa mizere yofunika kwambiri yazizindikiro kapena mayunitsi am'deralo.

Mzere wa chizindikiro cha ma frequency apamwamba womwe umayikidwa pamwamba pa wosanjikiza umakhala ndi mwayi wopanga ma radiation akuluakulu a electromagnetic. Mzere wa chizindikiro cha ma frequency apamwamba uyenera kuyikidwa pakati pa wosanjikiza wamagetsi ndi wosanjikiza wapansi. Ma radiation omwe amapangidwa adzakhala ochepa kwambiri chifukwa cha kuyamwa kwa mafunde a electromagnetic ndi wosanjikiza wamagetsi ndi wosanjikiza wapansi.

Pa PCB yokhazikika, anthu amakhudzidwa kwambiri ndi ma short circuit, insulation, ndi mavuto ena a waya wachitsulo. Komabe, pofuna kuti zinthu zamagetsi zizigwira ntchito bwino, ma frequency otumizira ma signal ayenera kuwonjezeredwa ndipo anthu amakhudzidwa kwambiri ndi kapangidwe ka ma signal a PCB yothamanga kwambiri.

Zinthu zofunika kuziganizira kwambiri ndi kapangidwe ka PCB yachangu kwambiri komanso kupanga popanga ma PCB achangu kwambiri.

Kutalika kwa njira yosiyana kuyenera kufanana.

Njira yoyendera siyenera kudutsa ndege zosakwanira.

Musayike malo oyesera pa mizere iliyonse ya chizindikiro cha liwiro lalikulu.

Musayendetse mizere ya chizindikiro cha liwiro lalikulu pafupi kapena pansi pa makhiristo, ma oscillator, magetsi osinthira, mabowo okwezera, zida zamaginito, kapena ma chips a chizindikiro cha periodic.

Yesani kuyendetsa mizere ya chizindikiro cha liwiro lapamwamba pamwamba ndi pansi ndi gawo lonse la pansi lothandizira. Sikoyenera kuyendetsa mizere mkati mwa ndege.

Sungani mtunda kuchokera pa chizindikiro cha liwiro lalikulu mpaka m'mphepete mwa gawo lofunikira la nthaka yowunikira kuposa 90mil.

Samalani momwe soketi ndi mawaya olumikizira zimagwirira ntchito.

M'lifupi mwa Coppe trace, malo, ndi kapangidwe ka layup ziyenera kulamulidwa bwino kuti zikwaniritse mtengo wochepa wa impedance.

Mayeso a TDR impedance nthawi zambiri amafunika akamaliza ma PCB othamanga kwambiri.

Mitundu yoyenera ya zinthu iyenera kusankhidwa kuti ikwaniritse ntchito zomwe mukufuna.

Ma PCB othamanga kwambiri amafunika malo osalala, ndipo nthawi zonse timalangiza ENIG kuti agwiritse ntchito ENEPIG pokonza malo.

Mlingo wapamwamba kwambiri wosamutsa deta womwe ungatheke pa PCB yothamanga kwambiri ndi 10.0GPs (Gigabits pa sekondi imodzi) kuposa apa, koma izi zikuyenda bwino nthawi zonse.

Pali zida zofunika zopangira mapulogalamu a PCB ndi zida zoyeserera za EDA zomwe zimagwiritsidwa ntchito popanga PCB yothamanga kwambiri monga Cadence, Mentor, PADS, Altium, HyperLynx, HFSS, ADS, ndi zina zotero.

Ndikofunikira kudziwa kuti chida chimodzi cha mapulogalamu chingakhale choyenera pulojekiti imodzi ya PCB, pomwe chida china cha mapulogalamu chingagwiritsidwe ntchito bwino pamitundu ina ya mapulojekiti. Chifukwa chake, ndikofunikira kwambiri kupeza chida choyenera cha mapulogalamu a PCB.

Zipangizo zothamanga kwambiri zitha kukhala FR4, ceramic, PTFE kapena PTFE zolimbikitsidwa ndi 1 Ghz mpaka 100 Ghz. Pali ogulitsa ambiri otchuka a PCB monga: Rogers, ISOLA, Ventec, ITEQ, TUC, SHENGYI, Panasonic, Taconic, ndi zina zotero.

Zolakwika zomwe zimachitika kawirikawiri posankha zinthu za PCB pamakina a radar ndi monga kudalira chinthu chimodzi chokha (monga kugwiritsa ntchito FR-4 pakugwiritsa ntchito pafupipafupi), kunyalanyaza zosowa za kasamalidwe ka kutentha, ndikunyalanyaza zovuta zopanga zinthu zapamwamba.