Tau kaum xyoo dhau los no, millimeter-wave (mmWave) radar tau hloov zuj zus los ntawm lub sensor niche hauv ob peb lub tsheb kim heev mus rau qhov tseem ceeb hauv kev pom kev hauv cov tsheb ntse. Txij li kev tswj hwm kev caij nkoj hloov pauv (ACC) thiab kev nres tsheb thaum muaj xwm txheej ceev tsis siv neeg (AEB) mus rau kev tsav tsheb ceev ceev ntawm autopilot (NOA) thiab kev pab tsav tsheb hauv nroog, mmWave radar ua lub luag haujlwm tseem ceeb hauv kev pom ib puag ncig ntawm lub tsheb.
Raws li qhov kev thov rau cov txheej txheem pabcuam tsav tsheb siab heev, cov txheej txheem radar lawv tus kheej tab tom hloov pauv tas li. Cov radar ob-seem thaum ntxov tau maj mam hloov los ntawm 4D imaging radars uas muaj peev xwm muab ntau yam, ceev, azimuth, thiab cov ntaub ntawv siab tib lub sijhawm, ua rau muaj kev cai nruj dua ntawm kev ntes qhov deb, kev daws teeb meem kaum sab xis, thiab kev paub lub hom phiaj. Dhau li ntawm kev txhim kho hauv lub zog ua haujlwm chip thiab kev txawj ntse algorithm, kev tsim qauv antenna tau tshwm sim ua qhov tseem ceeb uas ua rau muaj kev txhim kho kev ua tau zoo no. Piv txwv li, Continental's high-resolution imaging radar ARS540 ua tiav ze li ntawm 300-meter ntes ntau yam los ntawm cov antenna arrays siab, tib lub sijhawm taug qab ntau pua lub hom phiaj. Hauv tebchaws, cov khoom lag luam radar 4D mmWave tiam tom ntej siv cov antennas loj thiab cov qauv waveguide zoo tshaj plaws los txhim kho kev paub lub hom phiaj ntev, ua rau pom cov tsheb, cov neeg zov, thiab cov teeb meem tsis txav chaw ua ntej. Tom qab cov kev nce qib no, ib qho kev hloov pauv meej meej tau tshwm sim: cov radars mmWave ua tau zoo siab tau txais cov qauv waveguide antenna ntau zuj zus.
Hauv cov kab ke radar mmWave, lub kav hlau txais xov yog lub luag haujlwm rau ob qho kev tso tawm thiab kev txais cov nthwv dej electromagnetic, ncaj qha cuam tshuam rau qhov ntau ntawm kev kuaj pom, kev daws teeb meem angular, thiab kev ua haujlwm ntawm lub teeb liab. Cov qauv tsim radar mmWave thaum ntxov feem ntau siv cov kav hlau txais xov PCB microstrip vim lawv yooj yim, pheej yig, thiab yooj yim ntawm kev tsim khoom loj. Txawm li cas los xij, thaum cov zaus radar nce mus txog 77 GHz thiab dhau ntawd, cov kev txwv ntawm PCB antennas pom tseeb. Cov khoom dielectric ntawm cov ntaub ntawv PCB ua rau muaj kev poob ntawm mmWave zaus, txo cov teeb liab lub zog, thaum cov kev txwv hauv kev ua haujlwm ntawm lub zog hluav taws xob thiab kev ua haujlwm beamforming txwv kev ua haujlwm ntawm lub cev.
Qhov sib txawv, cov kav hlau txais xov waveguide coj cov nthwv dej electromagnetic hla cov qauv hlau, txo qhov kev poob ntawm kev nthuav dav thiab ua tiav kev ua haujlwm siab dua ntawm kev siv hluav taws xob. Yog li ntawd, rau cov kab ke uas xav tau kev tshawb pom ntev thiab kev daws teeb meem zoo, cov kav hlau txais xov waveguide tau tshwm sim ua qhov kev daws teeb meem zoo tshaj plaws. Txawm li cas los xij, kev siv dav dav ntawm waveguides ua rau muaj kev cov nyom tshiab hauv kev tsim khoom.
Tsis zoo li PCB antennas, waveguide antennas yog cov qauv hlau electromagnetic precision. Kev nthuav dav ntawm nthwv dej hauv waveguide yog qhov rhiab heev rau qhov tseeb ntawm qhov cavity thiab kev coj ua sab hauv. Kev hloov pauv hauv qhov ntev ntawm waveguide lossis qhov roughness ntawm qhov chaw tuaj yeem ua rau qhov nce, deflect beam direction, thiab ua rau lub teeb liab poob, thaum kawg cuam tshuam rau radar nrhiav qhov deb thiab kev paub lub hom phiaj. Kev tsim khoom ib txwm muaj kev vam khom CNC machining lossis hlau milling, uas ua kom muaj kev ua haujlwm electromagnetic meej tab sis ntsib cov kev txwv tseem ceeb hauv tus nqi thiab scalability. Millimeter-wave qauv, feem ntau tsuas yog ob peb millimeters hauv qhov loj me nrog kev kam rau siab ntawm kaum tawm microns, xav tau cov tshuab zoo thiab kev tswj hwm cov txheej txheem zoo. Mechanical machining haum rau kev tsim khoom me me tab sis dhau los ua kev txwv rau kev lag luam loj-kev lag luam tsheb radars lossis cov neeg siv khoom sensors.
Yuav kom sib haum xeeb kev ua tau zoo ntawm electromagnetic nrog kev tsim khoom, kev lag luam tau tshawb nrhiav cov kav hlau txais xov hlau metallized waveguide. Lub tswv yim tseem ceeb yog cais cov qauv tsim los ntawm kev siv hluav taws xob. Dua li ntawm kev ua kom tag nrho cov hlau thaiv, txoj hauv kev siv "kev tsim qauv + kev ua kom nto."
Thaum xub thawj, lub qhov waveguide yog tsim los ntawm kev txhaj tshuaj molding, compression molding, lossis kev tsim khoom ntxiv nrog cov yas engineering lossis cov polymers ua tau zoo, muab kev ywj pheej thiab kev tsim khoom ntau. Tom qab kev tsim cov qauv, kev kho ua ntej ntawm qhov chaw - kev ntxuav, kev ntxhib, lossis kev ua kom tshuaj lom neeg - yog siv los txhim kho kev nplaum hlau. Tom qab ntawd tso cov txheej txheem conductive tas mus li, ntawm PVD, electroplating, lossis electroless plating, feem ntau nrog tooj liab, nickel, lossis nyiaj, hloov cov qauv mus rau hauv cov waveguide conductive uas tsis tshua muaj kev poob. Cov chaw tseem ceeb xws li radiating apertures lossis interface cheeb tsam yuav tau txais kev ua metallization hauv zos lossis kev ua haujlwm zoo kom ua kom zoo dua electromagnetic kev ua tau zoo.
Txoj kev "qauv + metallization" no khaws cia qhov kev ua tau zoo ntawm cov waveguides ib txwm muaj thaum ua kom muaj kev ywj pheej thiab ua haujlwm tau zoo. Cov khoom txhaj tshuaj pwm tso cai rau kev tsim khoom sai, txo cov nqi; cov yas substrates txo qhov hnyav, txhawb nqa lub tsheb lub teeb, thiab 3D luam ntawv pab txhawb cov geometries nyuaj, txhim kho kev tsim cov antenna arrays loj. Txoj kev ua tiav sib npaug electromagnetic efficiency, manufacturability, thiab kev tswj tus nqi, ua rau cov metallized waveguide antennas ntau ntxiv hauv mmWave radar cov khoom.
Zhihua Vacuum muab cov kev daws teeb meem dav dav rau kev tsim khoom ntse ntawm cov kav hlau txais xov hlau mmWave radar waveguide. Lawv cov kab tsim khoom txheej txheem txuas ntxiv mus, raws li lub tshuab nqus tsev sputtering, ua tiav ob-lossis ntau txheej hlau tso rau hauv ib lub voj voog nqus tsev nrog kev tswj hwm meej thiab kev sib xws. Piv rau kev luam ntawv electrode nyiaj ib txwm muaj, cov electrodes tooj liab magnetron-sputtered txhim kho kev ua tau zoo, kev ntseeg siab, thiab kev ua haujlwm tiv thaiv sulfuration thaum txo tus nqi. Kev tswj hwm tsis siv neeg thiab kev sib raug zoo nrog ntau qhov ntau thiab tsawg ceramic ua kom muaj txiaj ntsig zoo rau kev tsim khoom loj. Nrog ntau tshaj 30 xyoo hauv cov thev naus laus zis nqus tsev txheej txheem, suav nrog PVD, PECVD, thiab ALD, Zhihua Vacuum muab kev koom ua ke, kev zais cia txheej txheem los ntawm R&D mus rau kev tsim khoom loj.
Raws li kev tsav tsheb tsis muaj neeg tsav thiab cov thev naus laus zis ntse ntse nce qib, qhov kev thov ua haujlwm ntawm mmWave radar txuas ntxiv nce siab. Kev hloov pauv los ntawm PCB microstrip antennas mus rau waveguide antennas, thiab tam sim no mus rau cov qauv metallized waveguide, qhia txog lub luag haujlwm tseem ceeb ntawm kev tsim khoom antenna. Los ntawm kev sib cais cov qauv tsim los ntawm kev ua haujlwm conductive, metallized waveguide antennas ua tiav ob qho tib si electromagnetic kev ua tau zoo thiab kev tsim khoom zoo, muab kev ywj pheej rau cov qauv radar array nyuaj. Raws li cov ntaub ntawv tshawb fawb thiab cov txheej txheem tsim khoom nce qib, txoj hauv kev no tau npaj los ua lub luag haujlwm tseem ceeb hauv cov kab ke mmWave radar yav tom ntej.
- Tsab xov xwm no tau luam tawm los ntawmChaw tsim khoom siv nqus tsev txheejZhenhua Nqus Tsev
Lub sijhawm tshaj tawm: Lub Peb Hlis-27-2026