Kev xaiv ntawm RF coaxial connectors yuav tsum xav txog ob qho tib si kev ua tau zoo thiab kev lag luam.Kev ua tau zoo yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm cov khoom siv hluav taws xob.Kev lag luam, nws yuav tsum ua kom tau raws li qhov xav tau ntawm tus nqi engineering.Hauv txoj cai, plaub yam nram qab no yuav tsum tau txiav txim siab thaum xaiv cov khoom sib txuas.Tom ntej no, cia peb saib.
BNC connector
(1) Connector interface (SMA, SMB, BNC, thiab lwm yam)
(2) Kev ua haujlwm hluav taws xob, cable thiab cable sib dhos
(3) Daim ntawv txiav tawm (PC board, cable, vaj huam sib luag, thiab lwm yam)
(4) Mechanical qauv thiab txheej (tub rog thiab kev lag luam)
1, Connector interface
Lub connector interface feem ntau yog txiav txim siab los ntawm nws daim ntawv thov, tab sis nws yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm hluav taws xob thiab tshuab ua haujlwm tib lub sijhawm.
BMA hom connector yog siv rau qhov muag tsis pom kev sib txuas ntawm lub tshuab hluav taws xob qis microwave nrog zaus txog 18GHz.
BNC connectors yog bayonet-hom kev sib txuas, uas feem ntau yog siv rau kev sib txuas RF nrog zaus qis dua 4GHz, thiab tau siv dav hauv kev sib txuas lus, cov cuab yeej thiab khoos phis tawj sib txuas.
Tsuas yog cov ntsia hlau, lub interface ntawm TNC zoo ib yam li BNC, uas tseem tuaj yeem siv ntawm 11GHz thiab muaj kev ua tau zoo nyob rau hauv kev co.
SMA ntsia hlau connectors yog dav siv nyob rau hauv aviation, radar, microwave kev sib txuas lus, digital kev sib txuas lus thiab lwm yam tub rog thiab pej xeem teb.Nws impedance yog 50 Ω.Thaum siv cov cable hloov tau, qhov zaus qis dua 12.4GHz.Thaum siv semi-rigid cable, qhov siab tshaj plaws yog 26.5GHz.75 Ω muaj kev thov dav dav hauv kev sib txuas lus digital.
Qhov ntim ntawm SMB yog me dua li ntawm SMA.Txhawm rau muab cov qauv ntsuas phoo ntawm tus kheej thiab pab txhawb kev sib txuas sai, qhov kev lag luam feem ntau yog kev sib txuas lus digital, uas yog qhov hloov ntawm L9.Kev lag luam 50N ua tau raws li 4GHz, thiab 75 Ω yog siv rau 2GHz.
SMC zoo ib yam li SMB vim nws cov ntsia hlau, uas ua kom muaj zog ntawm cov tshuab ua haujlwm zoo thiab ntau zaus.Nws yog tsuas yog siv nyob rau hauv tub rog los yog siab vibration ib puag ncig.
N-hom ntsia hlau txuas siv cua ua cov khoom siv insulating nrog tus nqi qis, impedance ntawm 50 Ω thiab 75 Ω, thiab zaus ntawm 11 GHz.Nws feem ntau yog siv hauv cov tes hauj lwm hauv cheeb tsam, kev tshaj tawm xov xwm thiab cov cuab yeej ntsuas.
MCX thiab MMCX series connectors muab los ntawm RFCN yog me me thiab txhim khu kev qha nyob rau hauv kev sib cuag.Lawv yog cov khoom uas nyiam kom ua tau raws li qhov yuav tsum tau ua ntawm kev siv zog thiab miniaturization, thiab muaj kev cia siab rau daim ntawv thov dav.
2 、 Kev ua haujlwm hluav taws xob, cable thiab cable sib dhos
A. Impedance: Lub connector yuav tsum phim lub impedance ntawm lub kaw lus thiab lub cable.Nws yuav tsum tau muab sau tseg tias tsis yog tag nrho cov connector interfaces ua tau raws li impedance ntawm 50 Ω los yog 75 Ω, thiab impedance mismatch yuav ua rau kev ua tau zoo degradation.
B. Voltage: xyuas kom meej tias qhov siab tshaj plaws tiv taus qhov hluav taws xob ntawm lub connector tsis tuaj yeem tshaj thaum siv.
C. Kev ua haujlwm siab tshaj plaws: txhua qhov txuas muaj qhov ua haujlwm siab tshaj plaws, thiab qee qhov kev lag luam lossis 75n tsim muaj qhov tsawg kawg nkaus ua haujlwm zaus.Ntxiv nrog rau kev ua haujlwm hluav taws xob, txhua hom kev sib txuas muaj nws cov yam ntxwv tshwj xeeb.Piv txwv li, BNC yog bayonet kev twb kev txuas, uas yog ib qho yooj yim rau nruab thiab pheej yig thiab dav siv nyob rau hauv qis-kev sib txuas hluav taws xob;SMA thiab TNC series txuas nrog cov txiv ntseej, ua tau raws li qhov yuav tsum tau muaj ntawm kev vibration ib puag ncig ntawm cov khoom sib txuas.SMB muaj kev ua haujlwm ntawm kev sib txuas ceev thiab kev sib txuas, yog li nws tau nrov dua nrog cov neeg siv.
D. Cable: Vim nws qhov kev tiv thaiv qis, TV cable feem ntau yog siv rau hauv cov tshuab uas tsuas yog xav txog impedance.Ib daim ntawv thov raug yog TV kav hlau txais xov.
Lub TV saj zawg zog cable yog ib qho txawv ntawm TV cable.Nws muaj qhov cuam tshuam tsis tu ncua thiab tiv thaiv zoo.Nws tuaj yeem khoov thiab muaj tus nqi qis.Nws yog dav siv hauv kev lag luam hauv computer, tab sis nws tsis tuaj yeem siv rau hauv cov tshuab uas xav tau kev tiv thaiv kev ua haujlwm siab.
Shielded saj zawg zog cables tshem tawm inductance thiab capacitance, uas yog siv nyob rau hauv cov twj paj nruag thiab tsev.
Flexible coaxial cable tau dhau los ua qhov feem ntau kaw kev sib kis cable vim nws qhov kev ua haujlwm tshwj xeeb.Coaxial txhais tau hais tias lub teeb liab thiab grounding conductor nyob rau tib lub axis, thiab tus neeg xyuas pib sab nrauv yog tsim los ntawm cov hlau zoo braided, yog li nws tseem hu ua braided coaxial cable.Cov cable no muaj cov nyhuv tiv thaiv zoo ntawm tus neeg xyuas pib hauv nruab nrab thiab nws cov nyhuv shielding nyob ntawm hom braided hlau thiab thickness ntawm braided txheej.Ntxiv nrog rau qhov kev tiv thaiv hluav taws xob siab, cov cable no kuj tsim nyog rau kev siv ntawm qhov kub thiab txias.
Semi-rigid coaxial cables hloov lub braided txheej nrog tubular shells, ua tau zoo ua rau qhov tsis zoo ntawm kev tiv thaiv tsis zoo ntawm braided cables ntawm high zaus.Semi-rigid cables feem ntau yog siv nyob rau hauv high zaus.
E. Cable sib dhos: Muaj ob txoj hauv kev rau kev txuas txuas: (1) vuam lub hauv nruab nrab tus neeg xyuas pib thiab ntsia hlau thaiv txheej.(2) Crimp tus neeg xyuas pib hauv nruab nrab thiab txheej thaiv.Lwm txoj kev yog muab los ntawm ob txoj kev saum toj no, xws li vuam lub hauv nruab nrab tus neeg xyuas pib thiab crimping txheej thaiv.Txoj kev (1) yog siv rau hauv cov xwm txheej tsis muaj cov cuab yeej tshwj xeeb installation;Vim muaj kev ua haujlwm siab thiab txhim khu kev qha kev txiav txim siab ntawm txoj kev sib dhos crimping, thiab kev tsim cov cuab yeej tshwj xeeb crimping tuaj yeem ua kom ntseeg tau tias txhua qhov cable maggot sib dhos yog tib yam, nrog rau kev txhim kho ntawm cov cuab yeej siv hluav taws xob qis, crimping shielding txheej. ntawm qhov chaw vuam chaw tus neeg xyuas pib yuav nrov zuj zus.
3. Daim ntawv txiav txim
Cov khoom sib txuas tuaj yeem siv rau RF coaxial cables, luam tawm Circuit Board thiab lwm yam kev sib txuas.Kev xyaum tau ua pov thawj tias qee yam ntawm cov khoom sib txuas yog ib yam ntawm cov cable.Feem ntau, lub cable nrog me me sab nraud yog txuas nrog me me coaxial connectors xws li SMA, SMB thiab SMC.4 、 Cov qauv siv tshuab thiab txheej txheej
Cov qauv ntawm lub connector yuav cuam tshuam rau nws tus nqi.Kev tsim ntawm txhua qhov txuas muaj xws li cov qauv tub rog thiab cov qauv kev lag luam.Cov tub rog tus qauv tsim txhua qhov tooj liab, polytetrafluoroethylene rwb thaiv tsev, thiab sab hauv thiab sab nraud kub-plating raws li MIL-C-39012, nrog rau kev ua tau zoo tshaj plaws.Kev lag luam tus qauv tsim siv cov khoom pheej yig xws li tooj dag casting, polypropylene rwb thaiv tsev, nyiaj txheej, thiab lwm yam.
Cov connectors yog ua los ntawm tooj dag, beryllium tooj liab thiab stainless hlau.Tus neeg xyuas pib feem ntau yog coated nrog kub vim nws tsis tshua muaj kev tiv thaiv, corrosion kuj thiab zoo heev airtightness.Cov tub rog tus qauv yuav tsum tau kub plating ntawm SMA thiab SMB, thiab nyiaj plating ntawm N, TNC thiab BNC, tab sis ntau tus neeg siv nyiam npib tsib xee plating vim nyiaj yog yooj yim rau oxidize.
Cov feem ntau siv connector insulators muaj xws li polytetrafluoroethylene, polypropylene thiab toughened polystyrene, uas polytetrafluoroethylene muaj qhov zoo tshaj plaws rwb thaiv tsev kev ua tau zoo tab sis cov nqi ntau lawm.
Cov khoom siv thiab cov qauv ntawm lub connector cuam tshuam rau kev ua haujlwm nyuaj thiab kev ua haujlwm ntawm lub connector.Yog li ntawd, cov neeg siv yuav tsum tsim nyog xaiv lub connector nrog kev ua tau zoo dua thiab tus nqi sib piv raws li lawv daim ntawv thov ib puag ncig.
Post lub sij hawm: Feb-07-2023