Ntlafatsa boleng ba lets'oao ho li-PCB tse 12-layer ho fokotsa crosstalk

Ho Rarolla Liphephetso tsa Khokahano ea Litsela le Li-Interlayer ho Liboto tsa Potoloho tsa Layer tse 12 ho Finyella Boleng bo nepahetseng ba Letšoao le ho Fokotsa Crosstalk.

Tsebisa:

Khatelo-pele e potlakileng ea thekenoloji e lebisitse ho eketseha ha tlhokahalo ea lisebelisoa tsa elektronike tse rarahaneng, e leng se entseng hore ho sebelisoe liboto tsa potoloho tse ngata. Liboto tsena li na le mekhahlelo e mengata ea lipina tsa conductive, tse fanang ka tharollo e sebetsang le e sebetsang bakeng sa litsamaiso tsa elektroniki. Leha ho le joalo, ha ho rarahana ha liboto tsena ho ntse ho eketseha, ho hlaha mathata a fapaneng, joalo ka litaba tsa khokahano ea marang-rang. Ho blog ena, re tla ikakhela ka setotsoana mathateng a ho rarolla liqholotso tsena ka liboto tsa potoloho tsa mekato e 12 ho fihlela li-crosstalk tse tlase le boleng ba matšoao a holimo. Kahoo ha re ikakhele ka setotsoana!

Utloisisa mathata a cabling:

Cabling e sebetsang e bohlokoa ho netefatsa phetiso ea lets'oao le bonolo le ho fokotsa tšitiso. Ka boto ea potoloho ea mekato e 12, sebopeho sa trace se teteaneng se eketsa haholo ho rarahana ha mokhoa oa ho tsamaisa. Mona ke mekhoa e meng ea bohlokoa ea ho sebetsana le phephetso ena:

1. Beha likarolo ka hloko:

Ho beha likarolo ka hloko ho phetha karolo ea bohlokoa ho ntlafatseng tsela. Ka ho hlophisa likarolo ka mokhoa o utloahalang, re ka fokotsa bolelele ba terata ka kakaretso le ho fokotsa monyetla oa ho kopana. Tsepamisa maikutlo ho fokotsa sebaka se pakeng tsa likarolo tsa bohlokoa ho netefatsa phallo e nepahetseng ea matšoao.

2. Sebelisa lera la lets'oao ka bohlale:

Ho abela mats'oao ka leano ho thusa ho boloka botsitso ba matšoao. Tšitiso e ka fokotsoa ka ho kopanya mats'oao a ts'oanang hammoho ka mekhahlelo e haufi le ho fana ka sebaka se lekaneng lipakeng tsa matšoao a hlokolosi. Ho feta moo, ho sebelisa lifofane tsa fatše le tsa motlakase ho pholletsa le boto ho thusa ho laola ho kena-kenana le motlakase (EMI) le ho fokotsa ho fetoha ha motlakase.

3. Tsela ea lera la lets'oao:

Ho tsamaisa mats'oao ka hloko ke senotlolo sa ho thibela crosstalk. Sebelisa lipara tse fapaneng kapa mesaletsa e laoloang ea impedance bakeng sa matshwao a maqhubu a phahameng. Ho kenya ts'ebetsong mekhoa ea ho sireletsa, e kang ho kenyelletsa lifofane tsa fatše pakeng tsa lihlopha tsa matšoao, li ka fana ka tšireletso e eketsehileng khahlanong le ho kopana ha sefapano le lerata le feteletseng.

4. Botšepehi ba lipontšo le melao ea moralo:

Ho khomarela botšepehi ba matšoao le melao ea moralo ke habohlokoa ho finyella boleng bo botle ba pontšo. Etsa lipalo tse felletseng tsa impedance ho nahanoa ka litšobotsi tsa substrate le lithibelo tsa moralo. Netefatsa hore ho felisoe ka nepo le ho tsamaisana ho thibela mats'oao le bobolu ba data.

Rarolla bothata ba khokahano ea marang-rang:

Ntle le liphephetso tsa ho tsamaisa litsamaiso, ho netefatsa likhokahano tse sebetsang hantle tsa li-interlayer ho bohlokoa ka mokhoa o ts'oanang bakeng sa ntlafatso ea boleng ba matšoao. Ha re hlahlobeng mekhoa e meng ea ho rarolla bothata ba khokahano ea li-inter-layer:

1. Ka libaka:

Li-vias tse behiloeng ka maqiti li thusa ho phalla hantle ha mats'oao lipakeng tsa mekhahlelo. Ho beha vias haufi le mohloli oa pontšo le sebaka seo u eang ho sona ho fokotsa monyetla oa ho kopana le ho senyeha ha matšoao. Li-vias tse foufetseng kapa tse patiloeng ka ho eketsehileng li ntlafatsa botšepehi ba pontšo ka ho lumella likhokahano ho likarolo tse itseng ntle le ho phunyeletsa boto kaofela.

2. Fokotsa ka li-stubs:

Via stubs e ka etsa hore mats'oao a fokotsehe, haholo-holo ka maqhubu a phahameng. Ka ho fokotsa bolelele ba li-stubs, re ka fokotsa maikutlo le tahlehelo ea matšoao. Mekhoa e fapaneng e kang ho cheka ka morao le microdrilling e ka thusa ho felisa kapa ho fokotsa bolelele ba li-stub.

3. Tsela e laolehileng ea ho sitisa:

Ho fihlella impedance e laoloang pakeng tsa mekhahlelo e fapaneng ke ea bohlokoa ho boloka botšepehi ba matšoao. Lipalo tse matla tsa impedance le ho latela mohlala ka hloko li netefatsa litšoaneleho tse sa fetoheng tsa khokahano ea li-interlayer, ho fokotsa ho khopama ha mats'oao.

4. Moralo o pakiloeng:

Ho nahana ka hloko ka moralo oa li-stack-up ho ka fokotsa mathata a khokahano ea marang-rang. Khetha li-symmetrical stackup u sebelisa likarolo tsa prepreg kapa li-dielectric tse behiloeng ka mokhoa o ts'oanang. Ka kabo e leka-lekaneng ea thepa, lets'oao leha e le lefe le fetang lera le leng le le leng le tla ba le maemo a ts'oanang, ho netefatsa boleng bo tsitsitseng ba matšoao ho pholletsa le boto kaofela.

Ha re phethela:

Tlhokahalo e ntseng e eketseha ea lisebelisoa tsa elektronike tse sebetsang hantle e hloka hore ho sebelisoe liboto tsa potoloho tse nang le mekhahlelo e mengata le tse rarahaneng. Leha ho le joalo, ho rarolla liqholotso tsa khokahano ea litsamaiso le li-inter-layer ho liboto tsena tse rarahaneng ho bohlokoa ho fihlela katleho e tlase le boleng ba matšoao a holimo. Ka ho beha likarolo ka hloko, tšebeliso e masene ea likarolo tsa matšoao, ho kenya tšebetsong tsela e nepahetseng, le ho nahana ka likhokahano tse nepahetseng tsa li-interlayer, re ka hlola liphephetso tsena le ho netefatsa ts'ebetso e nepahetseng ho tsoa ho liboto tsa lipotoloho tse 12. Sebelisa maano ana ho isa moralo oa hau oa elektroniki maemong a macha a katleho!