Hauv cov tshuab ntsuas microwave, RF thiab microwave keyboards tau siv dav rau kev teeb tsa ntawm cov twj paj nruag thiab DUTs.Los ntawm muab qhov hloov mus rau hauv qhov hloov matrix system, cov teeb liab los ntawm ntau lub twj paj nruag tuaj yeem raug xa mus rau ib lossis ntau dua DUTs.Qhov no tso cai rau ntau qhov kev sim ua kom tiav siv ib qho kev ntsuas ib zaug yam tsis tas yuav tsum muaj kev cuam tshuam thiab rov txuas dua.Thiab nws tuaj yeem ua tiav automation ntawm cov txheej txheem kuaj, yog li txhim kho kev sim ua haujlwm hauv qhov chaw tsim khoom loj.
Cov cim tseem ceeb ntawm kev hloov cov khoom siv
Niaj hnub no lub high-ceev manufacturing yuav tsum tau siv cov high-kev ua tau zoo thiab rov ua dua cov khoom siv nyob rau hauv kev ntsuam xyuas cov cuab yeej, hloov interfaces, thiab automated xeem systems.Cov keyboards no feem ntau txhais raws li cov yam ntxwv hauv qab no:
Ntau zaus
Qhov ntau zaus ntawm RF thiab microwave daim ntawv thov nyob ntawm 100 MHz hauv semiconductors rau 60 GHz hauv kev sib txuas lus satellite.Cov ntawv txuas nrog kev ua haujlwm dav dav tau nce qhov kev hloov pauv ntawm qhov kev sim vim qhov kev nthuav dav ntawm kev siv ntau zaus.Tab sis kev ua haujlwm dav dav tuaj yeem cuam tshuam rau lwm qhov tseem ceeb.
Insertion poob
Insertion poob kuj tseem ceeb heev rau kev sim.Kev poob ntau dua 1 dB lossis 2 dB yuav txo qis qhov siab tshaj plaws ntawm lub teeb liab, ua rau lub sijhawm nce thiab poob.Nyob rau hauv high-frequency daim ntawv thov ib puag ncig, zoo zog kis tau tus mob tej zaum yuav tsum tau ib tug kuj tus nqi siab, yog li cov kev poob ntxiv qhia los ntawm electromechanical keyboards nyob rau hauv txoj kev hloov dua siab tshiab yuav tsum tau txo kom ntau li ntau tau.
Rov qab poob
Qhov rov qab poob yog qhia nyob rau hauv dB, uas yog ib qho kev ntsuas ntawm qhov voltage sawv yoj piv (VSWR).Rov qab poob yog tshwm sim los ntawm impedance mismatch ntawm circuits.Hauv qhov ntau zaus microwave, cov yam ntxwv ntawm cov khoom siv thiab qhov loj ntawm cov khoom siv hauv lub network ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab impedance txuam lossis tsis sib haum xeeb los ntawm kev faib tawm.
Kev sib raug zoo ntawm kev ua haujlwm
Qhov sib xws ntawm qhov tsis zoo ntawm qhov tsis zoo tuaj yeem txo qhov kev ua yuam kev hauv qhov kev ntsuas, yog li txhim kho qhov ntsuas qhov tseeb.Qhov sib xws thiab kev ntseeg siab ntawm kev hloov pauv kev ua tau zoo ua kom ntsuas qhov tseeb, thiab txo cov nqi tswv cuab los ntawm kev ncua sij hawm ntsuas lub voj voog thiab nce lub sijhawm ntsuas kev ua haujlwm.
Muab cais nyob ib leeg
Kev rho tawm yog qhov kev txo qis ntawm cov teeb liab tsis muaj txiaj ntsig pom ntawm qhov chaw nres nkoj txaus siab.Ntawm cov zaus siab, kev sib cais ua qhov tseem ceeb tshwj xeeb.
VSWR
Lub VSWR ntawm qhov hloov pauv yog txiav txim siab los ntawm cov khoom siv qhov ntev thiab kev ua haujlwm siab.Ib qho tsis zoo VSWR qhia tias muaj kev cuam tshuam sab hauv los ntawm impedance mismatch, thiab cov kab mob parasitic tshwm sim los ntawm cov kev xav no tuaj yeem ua rau muaj kev cuam tshuam rau cov cim cuam tshuam (ISI).Cov kev xav no feem ntau tshwm sim nyob ze ntawm qhov txuas, yog li kev sib txuas zoo sib xws thiab kev sib txuas kom raug yog qhov tseem ceeb rau kev sim.
Hloov ceev
Kev hloov ceev yog txhais raws li lub sij hawm xav tau rau qhov chaw nres nkoj hloov (switch arm) mus ntawm "on" mus rau "off", los yog los ntawm "off" mus rau "on".
Lub sijhawm ruaj khov
Vim qhov tseeb tias lub sijhawm hloov pauv tsuas yog qhia tus nqi uas nce mus txog 90% ntawm qhov ruaj khov / kawg tus nqi ntawm RF teeb liab, lub sijhawm ruaj khov yuav dhau los ua qhov tseem ceeb ntawm cov khoom siv hluav taws xob hauv xeev raws li qhov yuav tsum tau ua ntawm qhov tseeb thiab qhov tseeb.
Cov kabmob muaj zog
Lub hwj chim bearing yog txhais raws li lub peev xwm ntawm kev hloov mus nqa lub zog, uas yog ze rau cov qauv tsim thiab cov khoom siv.Thaum muaj RF/microwave fais fab ntawm qhov chaw nres nkoj hloov thaum hloov, thermal hloov tshwm sim.Kev hloov txias tshwm sim thaum lub teeb liab fais fab raug tshem tawm ua ntej hloov.Kev hloov pauv txias ua tiav qhov kev sib cuag ntawm qhov kev ntxhov siab thiab lub neej ntev dua.
Kev txiav txim
Hauv ntau daim ntawv thov, 50 Ω load txiav yog qhov tseem ceeb.Thaum qhov hloov pauv tau txuas nrog lub cuab yeej nquag, qhov cuam tshuam lub zog ntawm txoj kev yam tsis muaj kev txiav tawm yuav ua rau lub hauv paus puas.Electromechanical keyboards tuaj yeem muab faib ua ob pawg: cov uas tsis muaj kev txiav tawm thiab cov uas tsis muaj kev txiav tawm.Cov khoom siv hauv lub xeev tuaj yeem muab faib ua ob hom: hom kev nqus thiab hom kev xav.
Video xau
Cov yeeb yaj kiab tuaj yeem pom tau tias cov kab mob parasitic tshwm sim ntawm qhov hloov RF chaw nres nkoj thaum tsis muaj RF teeb liab tam sim no.Cov teeb liab no yog los ntawm cov waveforms tsim los ntawm tus neeg tsav tsheb hloov, tshwj xeeb tshaj yog los ntawm lub hauv ntej voltage spikes yuav tsum tau tsav lub high-speed hloov ntawm tus PIN diode.
Kev pab lub neej
Lub neej ua haujlwm ntev yuav txo tus nqi thiab kev txwv nyiaj txiag ntawm txhua qhov kev hloov, ua rau cov neeg tsim khoom sib tw ntau dua hauv kev lag luam niaj hnub no.
Cov qauv ntawm qhov hloov
Cov txheej txheem sib txawv ntawm cov keyboards muab qhov yooj yim rau kev tsim cov matrices complex thiab automated test systems rau ntau yam kev siv thiab ntau zaus.
Nws yog tshwj xeeb muab faib ua ib qho ntawm ob tawm (SPDT), ib ntawm peb tawm (SP3T), ob hauv ob tawm (DPDT), thiab lwm yam.
Reference link hauv kab lus no:https://www.chinaaet.com/article/3000081016
Post lub sij hawm: Feb-22-2024