Muaj ob lub ntsiab ntawm cov khoom siv tiv thaiv cable. Ib qho yog tias peb feem ntau hu cov ntaub ntawv nrog qee theem ntawm kev tiv thaiv kev ua tau zoo nyob rau hauv qee qhov kev tiv thaiv zoo li cov khoom siv polymer semi-conductive. Tus qauv rau kev faib tawm yog lub hauv paus ntsiab lus ntawm cov khoom siv sab hauv. Cov khoom siv nws tus kheej muaj cov khoom siv hluav taws xob yog hu ua hom qauv, thiab cov khoom siv cov khoom siv los tiv thaiv kev cuam tshuam yog hu ua hom sib xyaw. Ob qho tib si cov qauv thiab cov khoom sib xyaw ua ke ib nrab ntawm cov khoom siv polymer yog cov khoom siv tiv thaiv tseem ceeb siv hauv cov qauv cable. Qhov no yog vim hais tias cov khoom siv polymer semi-conducting tsis tuaj yeem tiv thaiv electromagnetic cuam tshuam, tab sis kuj muaj zog tiv thaiv lwm yam kev puas tsuaj. , tshwj xeeb tshaj yog muaj peev xwm tiv thaiv xob laim tuaj yeem ua rau nws siv dav hauv cov ntawv thov tshwj xeeb xws li cov dav hlau cables. Cov txheej txheem tsim khoom ntawm cov khoom siv hluav taws xob semi-conductive yog qhov nyuaj dua thiab tus nqi kuj tseem siab. Yog li ntawd, cov khoom siv polymer semi-conductive xav tau cov nqi siab dua. Qhov thib ob hom yog hlau hlau weaving, uas feem ntau yog hais txog kev siv cov hlau hlau ua cov khoom tseem ceeb los ua ib lub thaiv thaiv. Cable shielding khoom rau anti-magnetic cuam tshuam. Hauv HDMI2.1, USB4 thiab lwm cov cables nrog kev tiv thaiv kev tiv thaiv, cov khoom siv tiv thaiv braided siv tooj liab-clad txhuas hlau. Txoj kev xaiv cov khoom siv no tsuas yog txhawm rau txhim kho kev tiv thaiv kev ua haujlwm ntawm cable. Nyob rau tib lub sij hawm, cables rau txawv daim ntawv thov scenarios Lub weaving tus nqi ntawm tus tsim qauv ntawm cov hlau hlau weaving siv kuj txawv. Feem ntau hais lus, cov nyhuv ntawm ntau txheej weaving yog zoo dua li ntawm ib txheej ib txheej, thiab qhov kev pab them nqi yog inversely proportional rau lub weaving lub kaum sab xis, uas txhais tau hais tias los txhim kho lub shielding kev ua tau zoo, lub weaving lub kaum sab xis yuav tsum tau txo thiab cov kev pab them nqi. cheeb tsam nce. Nyob rau hauv luv luv, daim ntawv thov zoo ntawm hlau shielding tuaj yeem muaj txiaj ntsig zoo ntawm kev tiv thaiv electromagnetic cuam tshuam.
Tsawg-zaus cables account rau ntau tshaj plaws ntawm cov khoom siv cable. Yog tias cov kab hluav taws xob sib txawv tau ntsib ntau lub ntsiab lus hauv av, lawv yuav tsim lub suab nrov dua tam sim no, uas tsis yog qhov zoo rau tag nrho cov txheej thaiv thaiv kom ua tiav cov txiaj ntsig zoo los tiv thaiv kev cuam tshuam. Yog tias siv ib txoj hauv kev hauv av thaiv kev tiv thaiv, nws yuav tsum tau ua kom ntseeg tau tias tam sim no tuaj yeem raug cuam tshuam los ntawm nws tus kheej hauv cov txheej txheem tiv thaiv, yog li txhawm rau xyuas kom meej tias qhov cuam tshuam tam sim no nyob rau hauv cov txheej thaiv thaiv, yog li tsis txhob cuam tshuam electromagnetic. Vim muaj kev cuam tshuam ntawm cov txheej txheem hauv av sab nraud ntawm cov khoom siv, cov txheej txheem tiv thaiv sab hauv ntawm qee cov cables feem ntau siv ob-point grounding. Qhov no feem ntau yog vim hais tias ob-point grounding shielding txoj kev tuaj yeem muab cov tam sim no rov qab los ntawm sab hauv magnetic teb ntawm cable, yog li txo qhov tam sim no qhov kev siv ntawm kev cuam tshuam. Qhov teeb meem ntawm stray capacitance feem ntau yuav tshwm sim nyob rau hauv high-frequency cables, uas cuam tshuam rau lub cev tam sim no kis tau tus mob nyob rau hauv high-frequency cables. Txawm li cas los xij, ib qho taw qhia hauv av thiab ob-point grounding tsis tuaj yeem daws qhov teeb meem no zoo. Yog li ntawd, nyob rau hauv high-frequency cables Multi-point grounding yuav tsum tau siv nyob rau hauv txoj kev shielding. Nyob rau hauv lub high-frequency cable, qhov cuam tshuam tam sim no nyob rau hauv kab muaj ntau zaus thiab muaj cov yam ntxwv ntawm nto concentration, uas ncaj qha ua rau cov cuam tshuam cuam tshuam rau ob npaug, uas yog tsis conducive rau ib txwm ua hauj lwm ntawm tag nrho cov kab, thiab cov multi- point grounding txoj kev tuaj yeem txo qhov impedance nyob rau hauv lub shielding txheej. , Txhawm rau txo qhov cuam tshuam ntawm lub suab nrov tam sim no, yog li txhim kho tag nrho cov nyhuv thaiv.
Cov txheej thaiv ntawm cov ntaub ntawv kab yog tsuas yog ua los ntawm tooj liab, txhuas thiab lwm yam ntaub ntawv uas tsis yog-magnetic, feem ntau braided tooj liab mesh (aluminium-magnesium woven mesh) los yog tooj liab ncoo (aluminium ncoo, thiab lwm yam), lawv thickness yog heev nyias, ntau. me dua qhov zaus ntawm kev siv cov khoom siv hlau Cov tawv nqaij qhov tob. Ib lub ntsiab lus uas yuav tsum tau piav qhia yog qhov kawg ntawm nws yuav tsum tau txuas nrog lub teeb liab hauv av ntawm lub voj voog, vim tias cov nyhuv ntawm cov txheej thaiv thaiv tsis yog tshwm sim los ntawm kev xav thiab nqus ntawm cov hluav taws xob thiab cov hlau nplaum ntawm cov hlau nws tus kheej. , tab sis tshwm sim los ntawm grounding ntawm shielding txheej. Cov ntawv sib txawv yuav cuam tshuam ncaj qha rau cov nyhuv thaiv. Txoj kev txhim kho yav tom ntej ntawm cov khoom siv hluav taws xob tiv thaiv hluav taws xob yog tsim los ntawm kev ua kom muaj kev tiv thaiv zoo dua, kev tiv thaiv ntau zaus, thiab kev ua haujlwm zoo dua. Txoj kev thov tshiab ntawm ntau yam ntaub ntawv tshiab hauv electromagnetic shielding yuav tau txais kev txhim kho ntxiv. Nyob rau hauv lub neej yav tom ntej technologies txoj kev loj hlob, electromagnetic shielding yuav tsim nyob rau hauv cov nqe lus ntawm zoo hluav taws xob conductivity, yooj yim ua technology, siab nqi kev ua tau zoo, thiab haum rau loj ntau lawm.
