Lungiselela umgangatho wesignali kwii-PCB ze-12-layer ukunciphisa i-crosstalk

Ukusombulula imiceli mngeni yoNxibelelwano lweNdlela kunye noQhagamshelwano lwe-Interlayer kwiiBhodi zeSekethe ze-12-Layer ukuze kuphunyezwe uMgangatho woMgangatho oLungileyo kunye nokunciphisa i-Crosstalk

Yazisa:

Ukuqhubela phambili ngokukhawuleza kwethekhnoloji kubangele ukwanda kwemfuno yezixhobo ze-elektroniki eziyinkimbinkimbi, okubangelwa ukusetyenziswa kweebhodi zeesekethe ezininzi. Ezi bhodi ziqulethe iileyile ezininzi zeendlela zokuqhuba, zibonelela ngesisombululo esincinci kunye nesisebenzayo kwiinkqubo ze-elektroniki. Nangona kunjalo, njengoko ubunzima bezi bhodi busanda, imingeni eyahlukeneyo ivela, efana neendlela kunye nemiba yoqhagamshelwano lwe-interlayer. Kule bhlog, siza kuntywila kwiingxaki zokusombulula le mingeni kwiibhodi zesekethe ze-12-layer ukuphumeza i-crosstalk ephantsi kunye nomgangatho ophezulu wesignali. Ngoko masingene ngaphakathi!

Qonda imiceli mngeni yeekhebhuli:

I-cabling esebenzayo ibalulekile ukuqinisekisa ukuhanjiswa kwesignali egudileyo kunye nokunciphisa ukuphazamiseka. Kwibhodi yesekethe ye-12-layer, i-denser trace layout inyusa kakhulu ubunzima benkqubo yomzila. Nazi ezinye izicwangciso ezingundoqo zokuhlangabezana nalo mngeni:

1. Beka amacandelo ngononophelo:

Ukubekwa kwecandelo okucingisisiweyo kudlala indima ebalulekileyo ekwandiseni umzila. Ngokucwangcisa amacandelo ngendlela enengqiqo, sinokunciphisa ubude bocingo olupheleleyo kwaye sinciphise ithuba le-crosstalk. Gxininisa ekunciphiseni umgama phakathi kwezinto ezibalulekileyo ukuqinisekisa ukuhamba kakuhle komqondiso.

2. Sebenzisa umaleko wophawu ngobulumko:

Ngobuchule ukwabela umaleko wophawu kunceda ukugcina imfezeko yomqondiso. Uphazamiseko lunokuncitshiswa ngokuhlanganisa iisignali ezifanayo kunye kumaleko akufutshane kunye nokubonelela ngesithuba esaneleyo phakathi kweempawu ezinovakalelo. Ukongeza, ukusebenzisa umhlaba kunye neenqwelomoya zamandla kwibhodi yonke kunceda ukulawula ukuphazamiseka kwe-electromagnetic (EMI) kunye nokunciphisa ukuguquguquka kwamandla.

3. Umaleko womqondiso womzila:

Ukuhambisa imiqondiso ngononophelo ngundoqo ekuthinteleni i-crosstalk. Sebenzisa izibini ezahlukeneyo okanye umkhondo olawulwayo we-impedance kwiisignali eziphezulu zefrikhwensi. Ukusetyenziswa kweendlela zokukhusela, ezifana nokubandakanya iindiza zomhlaba phakathi kweengqimba zesignali, kunokubonelela ngoluhlu olongezelelweyo lokukhusela ngokuchasene nokudibanisa kunye nengxolo egqithisileyo.

4. Ingqibelelo yomqondiso kunye nemithetho yoyilo:

Ukuthobela imfezeko yomqondiso kunye nemithetho yoyilo kubalulekile ekufezekiseni umgangatho obalaseleyo wesignali. Yenza ubalo olupheleleyo lwe-impedance ngokuqwalasela iimpawu ze-substrate kunye nemiqobo yoyilo. Qinisekisa ukupheliswa okufanelekileyo kunye nokulinganisa ukuthintela ukuthintela ukubonakaliswa kweempawu kunye urhwaphilizo lwedatha.

Sombulula ingxaki yoqhagamshelo phakathi kwamaleko:

Ukongeza kwimingeni yendlela, ukuqinisekisa uqhagamshelo lwe-interlayer olusebenzayo kubaluleke ngokulinganayo ekuphuculweni komgangatho wophawu. Makhe sihlolisise ubuchule obuthile bokusombulula ingxaki yoqhagamshelo phakathi kwamaleko:

1. Ngokufakwa:

Ii-vias ezibekwe ngobuchule ziququzelela ukuhamba komqondiso okusebenzayo phakathi kweeleya. Ukubeka i-vias kufutshane nomthombo wesignali kunye nendawo ekuyiwa kuyo kunciphisa ithuba lokuhlangana kunye nokuthotywa komqondiso. Ukufameka okanye ukungcwatywa nge-vias ngakumbi kwandisa imfezeko yomqondiso ngokuvumela uqhagamshelo kumaleko athile ngaphandle kokungena kwibhodi yonke.

2. Nciphisa usebenzisa i-stubs:

Ngokusetyenziswa kwe-stubs kunokubangela ukuthothisa umqondiso, ngakumbi kumaza aphezulu. Ngokunciphisa ubude be-stubs, sinokunciphisa ukubonakaliswa kunye nokulahlekelwa ngumqondiso. Iindlela ezahlukeneyo ezinje nge-backdrilling kunye ne-microdrilling zinokunceda ukuphelisa okanye ukunciphisa ubude be-stub.

3. Ukulawulwa kwendlela yokuthintela:

Ukufezekisa i-impedance elawulwayo phakathi kweengqimba ezahlukeneyo kubalulekile ukugcina imfezeko yomqondiso. Ubalo olungqongqo lwe-impedance kunye nokulandela umkhondo ngononophelo kuqinisekisa iimpawu ezingaguqukiyo ze-impedance kulo lonke uqhagamshelo lwe-interlayer, ukunciphisa ukugqwetheka komqondiso.

4. Uyilo oluqokelelweyo:

Ukuqwalaselwa ngononophelo koyilo lwe-stack-up kunokunciphisa imingeni yoqhagamshelo oluphakathi. Khetha i-symmetrical stackup usebenzisa i-prepreg layers okanye iileya zedielectric ezibekwe ngokulinganayo. Ngokusasazwa kwezinto ezilungeleleneyo, nasiphi na isignali edlula umaleko ngamnye iya kuba neemeko ezifanayo, iqinisekisa umgangatho wesignali ongaguqukiyo kuyo yonke ibhodi.

Ukuququmbela:

Imfuno ekhulayo yezixhobo ze-elektroniki ezisebenza ngokuphezulu zifuna ukusetyenziswa kweebhodi zesekethe ezinamanqwanqwa amaninzi kunye neziyinkimbinkimbi. Nangona kunjalo, ukusombulula imiceli mngeni yokunxibelelana kwezi bhodi zintsonkothileyo kubalulekile ekufezekiseni i-crosstalk ephantsi kunye nomgangatho wophawu oluphezulu. Ngokubeka ngononophelo amacandelo, ukusetyenziswa ngokufanelekileyo kweengqimba zemiqondiso, ukuphumeza umzila osebenzayo, kunye nokuqwalasela uxhulumaniso olufanelekileyo lwe-interlayer, sinokuyoyisa le mingeni kwaye siqinisekise ukusebenza kakuhle kwiibhodi zeesekethe ze-12. Sebenzisa ezi zicwangciso ukuthatha uyilo lwakho lwe-elektroniki ukuya kwindawo ephezulu yempumelelo!