Universal Serial Bus (USB) ingangove imwe yeanonyanya kuchinjika nzvimbo munyika.Yakatangwa neIntel neMicrosoft uye inoita seinopisa plug uye tamba sezvinobvira.Kubva pakaunzwa USB interface muna 1994, mushure memakore makumi maviri nematanhatu ebudiriro, kuburikidza ne USB 1.0/1.1, USB2.0, USB 3.x, yakazogadziridzwa kusvika ikozvino USB4;Mwero wekutapurirana wakawedzerawo kubva pa1.5Mbps kusvika pazvinozvino 40Gbps.Parizvino, kwete chete nharembozha dzichangoburwa dzinotsigira Type-C interface, asiwo makomputa emabhuku, makamera edhijitari, vatauri vakangwara, magetsi enhare uye zvimwe zvishandiso zvatanga kutora TYPE-C yakatarwa USB interface, iyo yakaunzwa zvinobudirira. mumunda wemotokari.Panzvimbo pe USB-A, Tesla's Model 3 nyowani ine usB-C ports, uye Apple yakanyatso shandura macBooks ayo uye AirPods Pro kune yakachena USB Type-C ports yekuchinjisa data uye kuchaja.Pamusoro pezvo, zvinoenderana nezvinodiwa neEU, apuro ichashandisawo USB type-c interface mune ramangwana iPhone15, uye hapana mubvunzo kuti USB4 ichava iyo huru yechigadzirwa mumusika unotevera.
Zvinodiwa zve USB4 tambo
Shanduko huru mu USB4 nyowani kuunzwa kweiyo Thunderbolt protocol yakatarwa iyo Intel yakagovaniswa ne usb-kana.Kumhanya pamusoro pezviviri zvinongedzo, bandwidth yakapetwa kaviri kusvika ku40Gbps, uye Tunneling inotsigira akawanda data uye kuratidza mapuroteni.Mienzaniso inosanganisira PCI Express uye DisplayPort.Pamusoro pezvo, USB4 inochengetedza kugarisana kwakanaka nekuunzwa kweiyo nyowani yepasi pasi protocol, ichidzokera kumashure inoenderana ne USB3.2/3.1/3.0/2.0, pamwe neThunderbolt 3. Somugumisiro, USB4 yave yakanyanya kuomarara USB standard kusvika nhasi. , inoda kuti vagadziri vanzwisise USB4, USB3.2, USB2.0, USB Type-C uye USB Power Delivery zvakatemwa.Pamusoro pezvo, vagadziri vanofanirwa kunzwisisa mashandisirwo ePCI Express neDisplayPort, pamwe neiyo HIGH-DEFINITION yekudzivirira zvemukati (HDCP) tekinoroji inoenderana neUSB4 DisplayPort modhi, uye tambo nezvibatanidza zvatinoziva nazvo zvine zvakakwirira zvinodiwa kuti zvisangane. magetsi kuita zvinodiwa zve USB4 tambo dzakapera zvigadzirwa.
Iyo coaxial vhezheni ye USB4 yakabuda pasina
Munguva ye USB3.1 10G, vagadziri vazhinji vakatora coaxial chimiro kuti vasangane nezvinodiwa zvepamusoro frequency performance.Coaxial vhezheni yanga isati yashandiswa mu USB series, mamiriro ayo ekushandisa anonyanya kunzi Notebook, nharembozha, GPS, yekuyeresa chiridzwa, Bluetooth tekinoroji, nezvimwewo. zvichingodaro, nemusika wakawanda mutengo wekudzora zvinodiwa, munguva ye USB3.1 yekumisikidza kusangana nekuita kwechigadzirwa nekukurumidza kutora pamusika, asi nemusika we USB4 wepamusoro-frequency kutapurirana zvinodiwa zvakanyanya uye zvakanyanya kuomarara, uye yakakwirira-. kukurumidza kutapurirana kunoda waya ine yakasimba anti-kupindira kugona uye kugadzikana kwekuita kwemagetsi, Kuti uve nechokwadi chekugadzikana kweiyo yakakwira frequency kutapurirana, ikozvino mainstream USB4 ichiri iyo huru coaxial vhezheni, coaxial kugadzirwa uye kugadzira maitiro inzira yakaoma, kugadzirisa. iyo yakakwira frequency uye yakanyanya kumhanya application inoda yakakodzera michina yekugadzira uye yakakura uye yakagadzikana maitiro ekugadzira.Mukugadzirwa kwechigadzirwa, kusarudzwa kwezvinhu, maitiro ekugadzirisa uye kutonga kwemaitiro, magetsi maparamendi eakasarudzika marabhoritari bvunzo anoita basa rakakosha, mukati mekukura kwebhodhoro reiyo coaxial chimiro, mukuwedzera kune yako (mutengo wezvinhu, kugadzirisa mutengo unodhura) zvimwe. zvakanaka, asi kusimudzira kwemusika kunogara kuchitenderedza nzira yekuwana iyo yakakura batch mutengo, Pair of twist vhezheni yagara iri mugedhi re coaxial budiriro yekutsvaga nekusimudzira uye kubudirira.
Inogona kuonekwa kubva pakugadzirwa kweiyo coaxial line, kubva mukati kuenda kunze, zvichiteerana: central conductor, insulating layer, yekunze conductive layer (metal mesh), tambo yeganda.Coaxial tambo inoumbwa inoumbwa nemakondakita maviri.Iyo yepakati waya yecoaxial tambo inoshandiswa kutumira masaini.Iyo simbi yekudzivirira mambure inotamba mabasa maviri: imwe ndeyekupa yazvino loop yechiratidzo seyakajairwa pasi, uye imwe ndeyekudzvinyirira kupindira kwemagetsi ruzha kune chiratidzo senge inodzivirira mambure.Iyo yepakati waya uye inodzivirira network pakati peiyo semi-foaming polypropylene insulation layer, iyo insulation layer inosarudza kutapurirana maitiro etambo, uye zvinobudirira kudzivirira waya yepakati, inodhura ine chikonzero chinodhura.
USB4 yakamonyoroka pairi vhezheni iri kuuya?
Sezvo maseketi emagetsi anoshanda pama frequency epamusoro, maitiro emagetsi ezvikamu zvemagetsi anowedzera kuoma kubata.Kana iyo saizi yechikamu kana saizi yese yedunhu ichienzaniswa newavelength yeanoshanda frequency yakakura kupfuura imwe, iyo yedunhu inductance capacitance kukosha, kana zvinoumba parasitic mugumisiro wezvinhu zvinhu uye zvichingodaro, kunyangwe patakanga tichishandisa waya pair chimiro, basic frequency paramita kuyedzwa haigone kusangana nezvinodiwa nevatengi, uye inochinjika kupfuura iyo coaxial vhezheni yechimiro uye dhayamita yaro iri kure, Sei ndisingakwanise kuisa iwo maviri USB mumabhechi?Kazhinji, kukwirisa kuwanda kwekushandiswa kwetambo, kupfupika kwewavelength yechiratidzo, uye kudiki kwe skew pitch, zviri nani kuenzanisa.Nekudaro, idiki yakawandisa splicing pitch ichaunza yakaderera kugadzirwa kwekuita uye sprain ye insulated musimboti waya.Iyo tsinga yemutsara wepairi idiki kwazvo, huwandu hwekuzununguka kwakawanda, uye torsion stress pachikamu ichi yakanamirwa zvakakomba, zvichikonzera deformation yakakomba uye kukuvara kweiyo insulation layer, uye pakupedzisira kukonzera kukanganisa kwe electromagnetic field, zvichikanganisa vamwe. magetsi zviratidzo zvakadai SRL kukosha uye attenuation.Kana insulation eccentricity iripo, chinhambwe chiri pakati pemakondakita chinochinja nguva nenguva nekuda kwekuchinja uye kutenderera kwekudzivirira mutsara mumwechete, izvo zvinounza kushanduka kwenguva nenguva kwe impedance.Nguva yekuchinja-chinja yakati rebei.Mukufambisa kwema frequency, iyi shanduko inononoka inogona kuwonekwa nemagetsi emagetsi uye inokanganisa kukosha kwekurasikirwa kwekudzoka.Iyo USB4 pair vhezheni haigone kushandiswa mumabhechi.
Kwete pasi, asi usade kushandisa kufa kwako coaxial, saka vanhu vakatanga kuonesa mutsauko USB4 kudzivirira nzira dzekuita chigadzirwa, kuwring iyo yakakura drawback iri nyore kumonyoroka conductor, uye mutsauko une parallel packet zvakanangana nebasa rechikoro, dzivisa conductor sprain, sezvatinoziva tese, parizvino SHANDISA mutsauko weSAS, SFP + nezvimwe zvinoshandiswa mumutsara wekumhanya, Zvakakwana kuratidza kuti kuita kwayo kunofanirwa kunge kwakakwira kupfuura iyo stranded vhezheni, basa rakakosha repamusoro frequency data line. kutumira masaini edata, asi patinoishandisa kutenderedza inogona kuoneka marudzi ese eruzivo rwekukanganisa.Ngatifungei nezve kana aya masaini ekupindira achipinda mukati conductor weiyo data mutsara uye superimpose pane yepakutanga inotapurirwa chiratidzo, zvinokwanisika here kupindira kana kushandura chiratidzo chepakutanga chakatumirwa, nekudaro zvichikonzera kurasikirwa kwechiratidzo chakakosha kana matambudziko?Uye mutsauko wealuminium foil layer ndeyekuendesa ruzivo kwatiri kuti tiite basa rekudzivirira nekudzivirira, rinoshandiswa kuderedza kupindira kwekunze kwakazvimiririra masaini ekutapurirana, iyo huru pasuru yebhandi zvinhu uye aluminium foil kudhonza ndeye kushandisa aluminium foil yekuisa chisimbiso uye kudzivirira. , rimwe-side kana maviri-sided coating pafirimu repurasitiki, lu: su composite foil iyo inoshandiswa senhoo yetambo.Cable foil inoda mashoma mafuta pamusoro, hapana maburi uye yakakwirira michina zvinhu.Maitiro ekuputira ndeyekuunganidza maviri insulated core waya uye pasi waya pamwechete kuburikidza nemuchina wekuputira.Panguva imwecheteyo, chigadziko chealuminium foil uye chigadziko che-self-adhesive polyester tepi pachingwa chekunze chinoshandiswa kudzivirira tambo yewaya uye kudzikamisa chimiro chekuputira core waya.Iyi nzira ine mhedzisiro yakakosha kune waya midziyo, inosanganisira impedance, kunonoka mutsauko, kudzikisira, nekuti izvi zvinofanirwa kuburitsa zvakanyanya nezvinodiwa zvehunyanzvi, kuita bvunzo kumidziyo yemagetsi, kuitira kuti ive nechokwadi chekuputira waya yepakati inoenderana nezvinodiwa.Ehe, haisi yese mitsara yedata ine mativi maviri ekudzivirira.Mamwe ane matinji akawanda, mamwe ane layer imwe chete, kana kuti hapana zvachose.Shielding kupatsanurwa kwesimbi pakati penzvimbo mbiri dzepamhepo kudzora induction uye nemwaranzi yemagetsi, magineti uye emagetsi mafungu kubva kune imwe dunhu kuenda kune imwe.Kuve yakananga, iyo conductor musimboti wakakomberedzwa nemuviri unodzivirira kuti udzivise kukanganiswa nekunze kwemagetsi emagetsi shamba / chiratidzo chekuvhiringidza, uye kudzivirira kupindira kwemagetsi munda / chiratidzo kubva kupararira kunze.USB differential pair high frequency signal testing inogona kuenzaniswa necoaxial, differential pair USB4 tambo iri kuuya.
Nguva yekutumira: Aug-16-2022
