Xov Xwm Kev Lag Luam

Coaxial poob teeb meem

2021-04-21


Coaxial poob teeb meem

Coaxial xaim hluav taws xob dav siv nyob rau hauv kev lag luam, thiab lawv poob yeej ib txwm muaj kev txhawj xeeb.Qhov ntau dua qhovcoaxial kab yog siv, qhov poob ntau dua.Cov laj thawj tshwj xeeb muaj raws li hauv qab no.

Ua ntej, ntau dua qhov ntau zaus ntawm lub teeb liab, qhov ua kom tawv nqaij ua tau zoo.Qhov ntau concentrated kis tau tus mob rau ntawm cov hlau, qhov me dua kis tau tus mob sib kis. Yog li ntawd, ntau dua qhov tsis haum, qhov ntau dua ploj. Txhawm rau txo qis qhov ploj, qhov txheej txheem RF siv cov khoom Siv Muaj Txuj Ci (qhov siab ua tau zoo, kev ua haujlwm ncaj, thiab lwm yam).

Thib ob, cov kab coaxial poob tau muab faib ua dielectric poob thiab cov hlau yeeb yam poob.Lub ntsiab yog dielectric poob. Feem ntau, tus txheeb ze dielectric tsis tshua muaj siab thiab dielectric poob lub kaum sab xis yog qhov me me, yog li ntawd qhov cuam tshuam tsawg. Hauv nruab nrab yuav tsum muaj cov qauv zoo sib xws kom muaj kev cuam tshuam tsis sib xws. Ntau dua qhov zaus, qhov nyuaj nws yuav tsum tswj hwm txoj kev cuam tshuam thiab tsis tu ncua, thiab qhov poob ntawm qhov poob mus yuav loj dua.
1. Dielectric poob: Thaum cov zaus muaj qhov siab, lub dielectric tas li yog qhov haujlwm ntawm zaus vim qhov dispersion ntawm nruab nrab. Lub hauv paus vim li cas yog tias cov roj av ntim sib hloov sib txawv nrog cov khoom siv hluav taws xob sib hloov. Lub dielectric coefficient hloov pauv nrog zaus yuav tsum muaj tus nqi siab tshaj plaws, tab sis vim tias cov coaxial kab rwb thaiv tsev yog cov khoom siv tsis tshua muaj zog, cov dielectric coefficient dispersion los ntawm tsawg zaus rau high zaus yog tsawg heev.
2. Tus neeg xyuas pib ploj: Hais lus nruj me ntsis, tus neeg xyuas pib ploj tiag tiag tuaj yeem faib ua ob ntu: cov cua sov ploj thiab hluav taws xob xau vim los ntawm kev thaiv tsis tiav. Tus nqi tiv thaiv zoo tib yam muaj kev sib txawv shielding cuam tshuam rau electromagnetic vuag ntawm ntau zaus, thiab kev tiv thaiv thaiv cov teebmeem ntawm kev muaj ntau tus siab. Tsis zoo li qhov tsawg zaus (ntawm chav kawm, qhov no tsis yog qhov tseem ceeb ntawm qhov poob).
  Thib peb. Daim tawv nqaij tob δ = 1 / Ï € fu€; thaj tsam ntawm kis ntawm qhov kis tus kab s = € € [(r + δ) ²-r²]; cov kis tau kis R = 1 / .s;
  Thaum kawg. Daim nyias nyias thiab ntev dua cov coaxial cable, qhov poob loj dua, thiab ntau dua cov teeb liab teeb liab, qhov poob loj dua.
Qhov saum toj no yog qhov poob ntawm coaxial cable.Coaxial cableyog cov khoom tseem ceeb ntawm peb lub tuam txhab. Yog tias koj muaj lus nug txog cov xov coaxial, thov koj xav tiv tauj peb. Tom ntej no, Kuv yuav qhia koj qee cov txheej txheem los txiav txim siab qhov zoo ntawm cov kab coaxial:
1. Soj ntsuam qhov puag ncig ntawm qhov nruab nrab insulating.
2. Txheeb xyuas qhov sib xws ntawm rwb thaiv tsev nruab nrab ntawm cov coaxial cable.
3. Txheeb xyuas cov braided net ntawm cov coaxial cable.
4. Kuaj qhov zoo ntawm txhuas ntawv ci.
5. Xyuas qhov nruj ntawm cov hnab riam sab nraud.
6. Soj ntsuam cov duab ntawm cov kab coaxial rau hauv lub voj.