Tus qauv ntawm amicrostrip kav hlau txais xovfeem ntau muaj dielectric substrate, radiator thiab av phaj.Lub thickness ntawm dielectric substrate yog ntau me dua lub wavelength.Cov txheej hlau nyias nyob rau hauv qab ntawm lub substrate yog txuas nrog hauv av phaj.Nyob rau sab pem hauv ntej, ib txheej hlau nyias nrog cov duab tshwj xeeb yog tsim los ntawm cov txheej txheem photolithography ua lub tshuab hluav taws xob.Cov duab ntawm lub phaj radiating tuaj yeem hloov tau ntau txoj hauv kev raws li kev xav tau.
Qhov nce ntawm microwave kev koom ua ke thev naus laus zis thiab cov txheej txheem tsim khoom tshiab tau txhawb txoj kev loj hlob ntawm microstrip antennas.Piv nrog rau cov kav hlau txais xov ib txwm, microstrip antennas tsis yog tsuas yog me me, lub teeb hauv qhov hnyav, tsis tshua muaj profile, yooj yim rau kev ua raws, yooj yim rau kev sib koom ua ke, tsis tshua muaj nqi, thiab tsim nyog rau ntau lawm, tab sis kuj muaj qhov zoo ntawm cov khoom siv hluav taws xob sib txawv.
Plaub txoj kev pub mis ntawm microstrip antennas yog raws li hauv qab no:
1. (Microstrip Feed): Qhov no yog ib txoj kev pub mis ntau tshaj plaws rau cov kav hlau txais xov microstrip.RF teeb liab kis tau mus rau lub radiating ib feem ntawm lub kav hlau txais xov los ntawm cov kab microstrip, feem ntau yog los ntawm coupling ntawm microstrip kab thiab lub radiating thaj.Cov qauv no yog qhov yooj yim thiab yoog raws thiab tsim nyog rau kev tsim ntawm ntau lub kav hlau txais xov microstrip.
2. (Aperture-coupled Pub): Txoj kev no siv cov slots lossis qhov ntawm lub microstrip kav hlau txais xov puag phaj los pub cov kab microstrip rau hauv cov khoom tawg ntawm lub kav hlau txais xov.Txoj kev no tuaj yeem muab cov impedance zoo sib xws thiab hluav taws xob ua haujlwm, thiab tuaj yeem txo cov kab rov tav thiab ntsug kab dav ntawm sab lobes.
3. (Kev Sib Nqus Coupled Pub): Txoj kev no siv lub oscillator lossis inductive keeb nyob ze ntawm kab microstrip los pub lub teeb liab rau hauv lub kav hlau txais xov.Nws tuaj yeem muab kev sib txuam ntau dua impedance thiab dav zaus band, thiab tsim nyog rau kev tsim cov kav hlau txais xov dav.
4. (Coaxial Feed): Txoj kev no siv cov xov hlau coplanar lossis coaxial cables los pub RF signals rau hauv qhov hluav taws xob ntawm lub kav hlau txais xov.Cov qauv no feem ntau muab kev sib txuam zoo impedance thiab hluav taws xob ua haujlwm, thiab tshwj xeeb tshaj yog tsim rau cov xwm txheej uas yuav tsum muaj ib lub kav hlau txais xov interface.
Txoj kev pub mis sib txawv yuav cuam tshuam rau qhov sib piv impedance, zaus tus yam ntxwv, hluav taws xob efficiency thiab lub cev layout ntawm lub kav hlau txais xov.
Yuav ua li cas xaiv lub coaxial pub point ntawm microstrip kav hlau txais xov
Thaum tsim lub microstrip kav hlau txais xov, xaiv qhov chaw ntawm lub coaxial feed point yog qhov tseem ceeb los xyuas kom meej qhov kev ua tau zoo ntawm tus kav hlau txais xov.Nov yog qee qhov kev pom zoo rau kev xaiv coaxial pub cov ntsiab lus rau microstrip antennas:
1. Symmetry: Sim xaiv lub coaxial feed point ntawm qhov chaw ntawm microstrip kav hlau txais xov kom tswj tau qhov sib luag ntawm tus kav hlau txais xov.Qhov no yuav pab txhim kho lub kav hlau txais xov hluav taws xob hluav taws xob thiab kev sib piv impedance.
2. Qhov chaw hluav taws xob yog qhov loj tshaj plaws: Lub coaxial feed point yog qhov zoo tshaj plaws xaiv ntawm txoj hauj lwm uas lub tshuab hluav taws xob ntawm lub microstrip kav hlau txais xov yog qhov loj tshaj plaws, uas tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom noj thiab txo qhov poob.
3. Qhov twg qhov siab tshaj plaws tam sim no: Lub coaxial feed point tuaj yeem xaiv nyob ze ntawm txoj haujlwm uas tam sim no ntawm microstrip kav hlau txais xov siab tshaj plaws kom tau txais hluav taws xob ntau dua thiab ua haujlwm tau zoo.
4. Zero electric teb point nyob rau hauv ib hom: nyob rau hauv microstrip kav hlau txais xov tsim, yog hais tias koj xav mus cuag ib hom hluav taws xob, lub coaxial feed point feem ntau yog xaiv ntawm xoom hluav taws xob teb taw tes nyob rau hauv ib hom kom ua tau zoo impedance txuam thiab hluav taws xob.yam ntxwv.
5. Kev soj ntsuam zaus thiab waveform: Siv cov cuab yeej simulation los ua qhov zaus cheb thiab hluav taws xob / kev faib tawm tam sim no los txiav txim siab qhov chaw zoo tshaj plaws coaxial feed point qhov chaw.
6. Xav txog lub beam kev taw qhia: Yog hais tias cov yam ntxwv ntawm cov hluav taws xob uas yuav tsum tau muaj directivity, qhov chaw ntawm lub coaxial feed point yuav raug xaiv raws li lub beam kev taw qhia kom tau raws li qhov xav tau ntawm tus kav hlau txais xov hluav taws xob kev ua tau zoo.
Nyob rau hauv tus txheej txheem tsim tiag tiag, nws yog feem ntau tsim nyog los ua ke cov txheej txheem saum toj no thiab txiav txim siab qhov zoo tshaj plaws coaxial feed point txoj hauj lwm los ntawm kev simulation tsom xam thiab cov txiaj ntsig ntsuas qhov tseeb kom ua tiav cov qauv tsim thiab ntsuas kev ua tau zoo ntawm microstrip kav hlau txais xov.Tib lub sijhawm, ntau hom microstrip kav hlau txais xov (xws li thaj kav hlau txais xov, helical kav hlau txais xov, thiab lwm yam) tej zaum yuav muaj qee qhov kev txiav txim siab tshwj xeeb thaum xaiv qhov chaw ntawm lub coaxial feed point, uas yuav tsum muaj kev tsom xam tshwj xeeb thiab kev ua kom zoo raws li cov kav hlau txais xov tshwj xeeb thiab daim ntawv thov scenario..
Qhov txawv ntawm microstrip kav hlau txais xov thiab thaj kav hlau txais xov
Microstrip kav hlau txais xov thiab thaj kav hlau txais xov yog ob lub kav hlau txais xov me me.Lawv muaj qee qhov sib txawv thiab cov yam ntxwv:
1. Qauv thiab layout:
- Tus kav hlau txais xov microstrip feem ntau muaj microstrip thaj thiab ib phaj hauv av.Lub microstrip thaj ua haujlwm raws li cov khoom siv hluav taws xob thiab txuas nrog hauv av phaj los ntawm kab microstrip.
- Patch antennas yog feem ntau cov neeg xyuas pib thaj ua rau thaj uas tau ncaj qha rau ntawm dielectric substrate thiab tsis tas yuav tsum muaj cov kab microstrip zoo li microstrip antennas.
2. Loj thiab zoo li:
- Microstrip antennas yog qhov me me, feem ntau siv nyob rau hauv microwave zaus bands, thiab muaj cov qauv siv tau yooj yim dua.
- Patch antennas kuj tuaj yeem tsim los ua kom me me, thiab qee qhov tshwj xeeb, lawv qhov ntev yuav me dua.
3. Ntau zaus:
- Qhov ntau zaus ntawm microstrip kav hlau txais xov tuaj yeem nyob ntawm ntau pua megahertz mus rau ob peb gigahertz, nrog rau qee yam broadband yam ntxwv.
- Patch antennas feem ntau muaj kev ua tau zoo dua hauv cov kab hluav taws xob tshwj xeeb thiab feem ntau yog siv hauv cov ntawv thov zaus.
4. Cov txheej txheem ntau lawm:
- Microstrip antennas feem ntau yog ua los ntawm kev siv tshuab luam ntawv Circuit Court board, uas tuaj yeem ua tau ntau thiab muaj nqi tsawg.
- Patch antennas feem ntau yog ua los ntawm cov khoom siv silicon lossis lwm cov ntaub ntawv tshwj xeeb, muaj qee yam kev ua haujlwm, thiab tsim nyog rau cov khoom me me.
5. Polarization yam ntxwv:
- Microstrip antennas tuaj yeem tsim los rau cov kab polarization lossis ncig polarization, muab qee qhov kev hloov pauv yooj yim.
- Cov yam ntxwv polarization ntawm thaj kav hlau txais xov feem ntau yog nyob ntawm tus qauv thiab teeb tsa ntawm tus kav hlau txais xov thiab tsis hloov pauv raws li microstrip antennas.
Feem ntau, microstrip kav hlau txais xov thiab thaj kav hlau txais xov sib txawv hauv cov qauv, ntau zaus, thiab cov txheej txheem tsim khoom.Xaiv hom kav hlau txais xov tsim nyog yuav tsum tau ua raws li cov kev cai tshwj xeeb ntawm daim ntawv thov thiab kev txiav txim siab tsim.
Microstrip kav hlau txais xov khoom pom zoo:
RM-MPA1725-9 (1.7-2.5GHz)
RM-MPA2225-9 (2.2-2.5GHz)
RM-MA25527-22 (25.5-27GHz)
RM-MA424435-22 (4.25-4.35GHz)
Lub sij hawm xa tuaj: Plaub Hlis-19-2024
