Lub teeb liab zaus nyob rau hauv daim ntawv thov ntawm automotive radar txawv ntawm 30 thiab 300 GHz, txawm tias tsawg li 24 GHz.Nrog kev pab los ntawm ntau lub zog hluav taws xob, cov teeb liab no tau xa los ntawm cov kab sib txawv ntawm cov kab sib txawv xws li microstrip kab, kab strip, substrate integrated waveguide (SIW) thiab grounded coplanar waveguide (GCPW).Cov thev naus laus zis sib kis no (Daim duab 1) feem ntau yog siv ntawm microwave zaus, thiab qee zaum ntawm millimeter yoj zaus.Circuit Court laminate cov ntaub ntawv tshwj xeeb siv rau qhov kev mob siab no yuav tsum tau.Microstrip kab, raws li qhov yooj yim tshaj plaws thiab feem ntau siv kev sib kis kab hluav taws xob siv hluav taws xob, tuaj yeem ua tiav qhov kev tsim nyog tau txais txiaj ntsig los ntawm kev siv cov khoom siv hluav taws xob ua hluav taws xob.Tab sis thaum lub zaus raug tsa mus rau millimeter yoj zaus, nws yuav tsis yog qhov zoo tshaj plaws hauv kev sib kis kab.Txhua kab sib kis muaj nws qhov zoo thiab qhov tsis zoo.Piv txwv li, txawm hais tias cov kab microstrip yog ib qho yooj yim rau txheej txheem, nws yuav tsum daws qhov teeb meem ntawm cov hluav taws xob siab thaum siv ntawm millimeter yoj zaus.
Daim duab 1 Thaum hloov mus rau millimeter nthwv dej zaus, microwave circuit designers yuav tsum fim qhov kev xaiv ntawm tsawg kawg yog plaub kis kab mob technologies ntawm microwave zaus.
Txawm hais tias qhib cov qauv ntawm microstrip kab yog yooj yim rau kev sib txuas ntawm lub cev, nws tseem yuav ua rau qee qhov teeb meem ntawm ntau zaus.Nyob rau hauv microstrip kis kab, electromagnetic (EM) nthwv dej propagate los ntawm tus neeg xyuas pib ntawm cov khoom siv hluav taws xob thiab cov dielectric substrate, tab sis qee qhov hluav taws xob tsis muaj hluav taws xob nthuav tawm los ntawm huab cua ib puag ncig.Vim qhov qis Dk tus nqi ntawm huab cua, qhov zoo ntawm Dk tus nqi ntawm lub Circuit Court yog qis dua li ntawm cov khoom siv hauv Circuit Court, uas yuav tsum tau xav txog hauv Circuit Court simulation.Piv nrog rau qis Dk, cov khoom siv hluav taws xob ua los ntawm cov khoom siv siab Dk zoo li cuam tshuam kev sib kis ntawm electromagnetic tsis thiab txo qhov kev nthuav tawm.Yog li ntawd, cov khoom siv hluav taws xob tsawg Dk feem ntau yog siv nyob rau hauv millimeter yoj circuits.
Vim tias muaj qee yam ntawm cov hluav taws xob hluav taws xob hauv huab cua, microstrip kab Circuit Court yuav tawm mus rau sab nraud, zoo ib yam li lub kav hlau txais xov.Qhov no yuav ua rau cov hluav taws xob tsis tsim nyog rau lub microstrip kab Circuit Court, thiab qhov poob yuav nce ntxiv nrog rau qhov ntau zaus, uas tseem ua rau muaj teeb meem rau cov neeg tsim hluav taws xob hauv Circuit Court uas kawm cov kab microstrip kom txo cov hluav taws xob hluav taws xob.Txhawm rau txo cov hluav taws xob poob, cov kab microstrip tuaj yeem tsim nrog cov khoom siv hluav taws xob uas muaj Dk ntau dua.Txawm li cas los xij, qhov nce ntawm Dk yuav ua rau qeeb ntawm electromagnetic yoj propagation rate (kwv yees rau huab cua), ua rau lub teeb liab theem hloov.Lwm txoj hauv kev yog txo cov hluav taws xob poob los ntawm kev siv cov khoom siv hluav taws xob thinner los ua cov kab microstrip.Txawm li cas los xij, piv nrog cov ntaub ntawv tuab tuab, cov khoom siv hluav taws xob nyias nyias muaj kev cuam tshuam ntau dua rau kev cuam tshuam ntawm tooj liab foil nto roughness, uas yuav ua rau qee lub teeb liab hloov pauv.
Txawm hais tias qhov kev teeb tsa ntawm microstrip kab Circuit Court yog qhov yooj yim, microstrip kab Circuit Court nyob rau hauv millimeter yoj band xav tau kev tswj xyuas meej.Piv txwv li, tus neeg xyuas pib dav uas yuav tsum tau tswj nruj me ntsis, thiab qhov siab dua qhov zaus, qhov nruj dua qhov kam rau ua.Yog li ntawd, cov kab microstrip nyob rau hauv millimeter yoj zaus band yog rhiab heev rau kev hloov ntawm kev siv tshuab, nrog rau cov thickness ntawm cov khoom siv dielectric thiab tooj liab nyob rau hauv cov khoom, thiab kev kam rau siab rau qhov yuav tsum tau muaj Circuit Court loj yog nruj heev.
Stripline yog ib qho kev txhim khu kev qha hluav taws xob xa hluav taws xob, uas tuaj yeem ua lub luag haujlwm zoo hauv millimeter yoj zaus.Txawm li cas los xij, piv nrog cov kab microstrip, tus neeg xyuas pib stripline yog ib puag ncig los ntawm qhov nruab nrab, yog li nws tsis yooj yim rau kev sib txuas ntawm cov khoom sib txuas lossis lwm qhov chaw tawm tswv yim / tso tawm rau lub stripline rau cov teeb liab kis tau tus mob.Lub stripline tuaj yeem suav tau tias yog ib hom ca coaxial cable, nyob rau hauv uas tus neeg xyuas pib yog qhwv los ntawm dielectric txheej thiab tom qab ntawd npog los ntawm stratum.Cov qauv no tuaj yeem muab cov txiaj ntsig zoo ntawm kev sib cais ntawm Circuit Court, thaum khaws cov teeb liab tawm hauv cov khoom siv hluav taws xob (tsis yog nyob rau hauv ib puag ncig huab cua).Electromagnetic yoj ib txwm propagates los ntawm cov khoom siv hluav taws xob.Lub stripline Circuit Court tuaj yeem simulated raws li cov yam ntxwv ntawm cov khoom siv hauv Circuit Court, tsis xav txog qhov cuam tshuam ntawm electromagnetic yoj hauv huab cua.Txawm li cas los xij, tus neeg xyuas pib hauv Circuit Court nyob ib puag ncig los ntawm qhov nruab nrab yog qhov yooj yim rau kev hloov pauv hauv kev siv thev naus laus zis, thiab cov teeb meem ntawm kev noj cov teeb liab ua rau nws nyuaj rau cov stripline los tiv thaiv, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej ntawm cov connector me me ntawm millimeter yoj zaus.Yog li ntawd, tshwj tsis yog qee lub voj voog siv hauv tsheb radars, striplines feem ntau tsis siv nyob rau hauv millimeter yoj circuits.
Vim tias muaj qee yam ntawm cov hluav taws xob hluav taws xob hauv huab cua, microstrip kab Circuit Court yuav tawm mus rau sab nraud, zoo ib yam li lub kav hlau txais xov.Qhov no yuav ua rau cov hluav taws xob tsis tsim nyog rau lub microstrip kab Circuit Court, thiab qhov poob yuav nce ntxiv nrog rau qhov ntau zaus, uas tseem ua rau muaj teeb meem rau cov neeg tsim hluav taws xob hauv Circuit Court uas kawm cov kab microstrip kom txo cov hluav taws xob hluav taws xob.Txhawm rau txo cov hluav taws xob poob, cov kab microstrip tuaj yeem tsim nrog cov khoom siv hluav taws xob uas muaj Dk ntau dua.Txawm li cas los xij, qhov nce ntawm Dk yuav ua rau qeeb ntawm electromagnetic yoj propagation rate (kwv yees rau huab cua), ua rau lub teeb liab theem hloov.Lwm txoj hauv kev yog txo cov hluav taws xob poob los ntawm kev siv cov khoom siv hluav taws xob thinner los ua cov kab microstrip.Txawm li cas los xij, piv nrog cov ntaub ntawv tuab tuab, cov khoom siv hluav taws xob nyias nyias muaj kev cuam tshuam ntau dua rau kev cuam tshuam ntawm tooj liab foil nto roughness, uas yuav ua rau qee lub teeb liab hloov pauv.
Txawm hais tias qhov kev teeb tsa ntawm microstrip kab Circuit Court yog qhov yooj yim, microstrip kab Circuit Court nyob rau hauv millimeter yoj band xav tau kev tswj xyuas meej.Piv txwv li, tus neeg xyuas pib dav uas yuav tsum tau tswj nruj me ntsis, thiab qhov siab dua qhov zaus, qhov nruj dua qhov kam rau ua.Yog li ntawd, cov kab microstrip nyob rau hauv millimeter yoj zaus band yog rhiab heev rau kev hloov ntawm kev siv tshuab, nrog rau cov thickness ntawm cov khoom siv dielectric thiab tooj liab nyob rau hauv cov khoom, thiab kev kam rau siab rau qhov yuav tsum tau muaj Circuit Court loj yog nruj heev.
Stripline yog ib qho kev txhim khu kev qha hluav taws xob xa hluav taws xob, uas tuaj yeem ua lub luag haujlwm zoo hauv millimeter yoj zaus.Txawm li cas los xij, piv nrog cov kab microstrip, tus neeg xyuas pib stripline yog ib puag ncig los ntawm qhov nruab nrab, yog li nws tsis yooj yim rau kev sib txuas ntawm cov khoom sib txuas lossis lwm qhov chaw tawm tswv yim / tso tawm rau lub stripline rau cov teeb liab kis tau tus mob.Lub stripline tuaj yeem suav tau tias yog ib hom ca coaxial cable, nyob rau hauv uas tus neeg xyuas pib yog qhwv los ntawm dielectric txheej thiab tom qab ntawd npog los ntawm stratum.Cov qauv no tuaj yeem muab cov txiaj ntsig zoo ntawm kev sib cais ntawm Circuit Court, thaum khaws cov teeb liab tawm hauv cov khoom siv hluav taws xob (tsis yog nyob rau hauv ib puag ncig huab cua).Electromagnetic yoj ib txwm propagates los ntawm cov khoom siv hluav taws xob.Lub stripline Circuit Court tuaj yeem simulated raws li cov yam ntxwv ntawm cov khoom siv hauv Circuit Court, tsis xav txog qhov cuam tshuam ntawm electromagnetic yoj hauv huab cua.Txawm li cas los xij, tus neeg xyuas pib hauv Circuit Court nyob ib puag ncig los ntawm qhov nruab nrab yog qhov yooj yim rau kev hloov pauv hauv kev siv thev naus laus zis, thiab cov teeb meem ntawm kev noj cov teeb liab ua rau nws nyuaj rau cov stripline los tiv thaiv, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej ntawm cov connector me me ntawm millimeter yoj zaus.Yog li ntawd, tshwj tsis yog qee lub voj voog siv hauv tsheb radars, striplines feem ntau tsis siv nyob rau hauv millimeter yoj circuits.
Daim duab 2 Tus tsim thiab simulation ntawm GCPW Circuit Court conductor yog duab plaub (saum toj no daim duab), tab sis tus neeg xyuas pib tau ua tiav rau hauv lub trapezoid (daim duab hauv qab), uas yuav muaj qhov sib txawv ntawm millimeter yoj zaus.
Rau ntau daim ntawv thov hluav taws xob millimeter yoj hluav taws xob uas nkag siab rau lub teeb liab theem teb (xws li tsheb radar), qhov ua rau theem tsis sib xws yuav tsum raug txo kom tsawg.Lub millimeter yoj zaus GCPW Circuit Court yog qhov yooj yim rau kev hloov pauv ntawm cov ntaub ntawv thiab kev siv tshuab, suav nrog kev hloov pauv ntawm cov khoom siv Dk tus nqi thiab cov txheej txheem thickness.Qhov thib ob, qhov kev ua haujlwm hauv Circuit Court tuaj yeem cuam tshuam los ntawm qhov tuab ntawm tus neeg xyuas pib tooj liab thiab qhov roughness ntawm tooj liab ntawv ci.Yog li ntawd, lub thickness ntawm tooj liab conductor yuav tsum tau khaws cia nyob rau hauv ib tug nruj kam rau ua, thiab lub nto roughness ntawm tooj liab ntawv ci yuav tsum tau minimized.Thib peb, kev xaiv ntawm txheej txheej ntawm GCPW Circuit Court kuj tseem cuam tshuam rau millimeter yoj kev ua haujlwm ntawm lub voj voog.Piv txwv li, lub Circuit Court siv tshuaj npib tsib xee kub muaj nickel poob ntau dua tooj liab, thiab cov nickel plated nto txheej yuav ua rau kom poob ntawm GCPW los yog microstrip kab (Daim duab 3).Thaum kawg, vim qhov me me wavelength, qhov kev hloov ntawm txheej txheej thickness kuj yuav ua rau cov kev hloov ntawm theem teb, thiab lub zog ntawm GCPW yog ntau dua li ntawm microstrip kab.
Daim duab 3 Cov kab microstrip thiab GCPW Circuit Court uas muaj nyob rau hauv daim duab siv tib yam khoom siv hluav taws xob (Rogers '8mil tuab RO4003C ™ Laminate), lub zog ntawm ENIG ntawm GCPW Circuit Court yog ntau dua li ntawm microstrip kab ntawm millimeter yoj zaus.
Post lub sij hawm: Oct-05-2022
