M'mabwalo a microwave kapena machitidwe, dera lonse kapena dongosolo nthawi zambiri limapangidwa ndi zipangizo zambiri za microwave monga zosefera, ma couplers, zogawa mphamvu, ndi zina zotero. wina wotayika pang'ono;
Mu dongosolo lonse la radar yamagalimoto, kutembenuka kwamphamvu kumakhudzanso kusamutsa mphamvu kuchokera ku chip kupita ku chodyetsa pa bolodi la PCB, kusamutsa chodyetsa kupita ku thupi la mlongoti, komanso kuyatsa koyenera kwa mphamvu ndi mlongoti.Mu njira yonse yotumizira mphamvu, gawo lofunikira ndi mapangidwe a otembenuza.Otembenuza mu millimeter wave systems makamaka amaphatikizapo microstrip to substrate Integrated waveguide (SIW), microstrip to waveguide conversion, SIW to waveguide conversion, coaxial to waveguide conversion, waveguide to waveguide conversion ndi mitundu yosiyanasiyana ya kutembenuka kwa waveguide.Nkhaniyi idzayang'ana kwambiri pakusintha kwa microband SIW.
Mitundu yosiyanasiyana ya zoyendera
Zithunzi za Microstripndi imodzi mwazomangamanga zomwe zimagwiritsidwa ntchito kwambiri pamakina ochepera a microwave.Ubwino wake waukulu ndi mawonekedwe osavuta, otsika mtengo komanso kuphatikiza kwakukulu ndi zigawo zokwera pamwamba.Mzere wa microstrip umapangidwa pogwiritsa ntchito ma conductor mbali imodzi ya gawo lapansi la dielectric, kupanga ndege imodzi kumbali inayo, ndi mpweya pamwamba pake.Kondakitala wapamwamba kwambiri ndi chinthu chowongolera (nthawi zambiri mkuwa) chopangidwa kukhala waya wopapatiza.M'lifupi mwake, makulidwe, kuloledwa kwachibale, ndi kutayika kwa dielectric tangent ya gawo lapansi ndizofunika kwambiri.Kuphatikiza apo, makulidwe a kondakitala (ie, makulidwe a metallization) ndi ma conductivity a kondakitala ndizofunikanso pama frequency apamwamba.Poganizira mosamala magawowa ndikugwiritsa ntchito mizere ya microstrip ngati gawo lofunikira pazida zina, zida zambiri zosindikizidwa za microwave ndi zigawo zake zitha kupangidwa, monga zosefera, ma couplers, zogawa mphamvu / zophatikizira, zosakaniza, ndi zina zambiri. kuchuluka kwa ma microwave pafupipafupi) kutayika kwa kufalikira kumawonjezeka ndipo ma radiation amapezeka.Chifukwa chake, mafunde a machubu opanda pake monga mafunde a rectangular amawakonda chifukwa chotayika pang'ono pama frequency apamwamba (palibe ma radiation).Mkati mwa waveguide nthawi zambiri amakhala mpweya.Koma ngati ingafune, imatha kudzazidwa ndi zinthu za dielectric, ndikuzipatsa kagawo kakang'ono kuposa mawonekedwe odzaza mpweya.Komabe, ma hollow tube waveguides nthawi zambiri amakhala ochulukirapo, amatha kukhala olemetsa makamaka pamayendedwe otsika, amafunikira zofunikira zopanga zapamwamba ndipo ndi okwera mtengo, ndipo sangathe kuphatikizidwa ndi zosindikizidwa zosindikizidwa.
RFMISO MICROSTRIP ANTENNA PRODUCTS:
RM-MA25527-22,25.5-27GHz
RM-MA425435-22,4.25-4.35GHz
Chinacho ndi chowongolera chosakanizidwa pakati pa kapangidwe ka microstrip ndi waveguide, yotchedwa substrate Integrated waveguide (SIW).SIW ndi mawonekedwe ophatikizika ngati ma waveguide opangidwa pazida zamagetsi, okhala ndi ma conductor pamwamba ndi pansi komanso mizere yazitsulo ziwiri zopanga zipupa zam'mbali.Poyerekeza ndi ma microstrip ndi ma waveguide, SIW ndiyotsika mtengo, imakhala ndi njira yosavuta yopangira, ndipo imatha kuphatikizidwa ndi zida za planar.Kuphatikiza apo, magwiridwe antchito pama frequency apamwamba ndiabwino kuposa ma microstrip ndipo amakhala ndi ma waveguide dispersion properties.Monga momwe tawonetsera pa Chithunzi 1;
Malangizo opangira SIW
Ma substrate Integrated waveguides (SIWs) ndi ma waveguide ophatikizika omwe amapangidwa pogwiritsa ntchito mizere iwiri yachitsulo yomwe imayikidwa mu dielectric yolumikiza zitsulo ziwiri zofanana.Mizere yachitsulo kudzera m'mabowo imapanga makoma am'mbali.Kapangidwe kameneka kali ndi mizere ya microstrip ndi ma waveguides.Njira yopangira imakhalanso yofanana ndi zida zina zosindikizidwa.A mmene SIW geometry akuwonetsedwa Chithunzi 2.1, pamene m'lifupi mwake (ie kulekana pakati vias mu njira lateral (monga)), ndi awiri a vias (d) ndi phula kutalika (p) ntchito kupanga SIW dongosolo. Zofunikira kwambiri za geometric (zomwe zikuwonetsedwa pa chithunzi 2.1) zidzafotokozedwa mu gawo lotsatira.Zindikirani kuti njira yayikulu ndi TE10, ngati mawonekedwe a rectangular waveguide.Ubale pakati pa cutoff frequency fc of air-filled waveguides (AFWG) ndi dielectric-filled waveguides (DFWG) ndi miyeso a ndi b ndiye mfundo yoyamba ya kapangidwe ka SIW.Kwa ma waveguide odzazidwa ndi mpweya, mafupipafupi a cutoff akuwonetsedwa munjira ili pansipa
SIW kapangidwe koyambira ndi chilinganizo chowerengera[1]
kumene c ndi liwiro la kuwala mu malo aulere, m ndi n ndi mitundu, a ndi kukula kwa mafunde amtundu wautali, ndipo b ndi kukula kwake kochepa.Pamene waveguide ikugwira ntchito mu TE10 mode, ikhoza kukhala yosavuta fc=c/2a;pamene waveguide yodzazidwa ndi dielectric, kutalika kwa mbali yotakata a kumawerengedwa ndi ad = a / Sqrt (εr), kumene εr ndi dielectric yosasinthasintha ya sing'anga;kuti Kupanga SIW ntchito mu TE10 mode, kudutsa dzenje katayanitsidwe p, m'mimba mwake d ndi mbali yaikulu monga ayenera kukwaniritsa chilinganizo kumtunda kumanja kwa chithunzi pansipa, ndipo palinso epirical mafomu a d<λg ndi p<2d [ 2];
pomwe λg ndiye mafunde owongolera: Nthawi yomweyo, makulidwe a gawo lapansi silingakhudze kapangidwe kake ka SIW, koma kungakhudze kutayika kwa kapangidwe kake, chifukwa chake, kutayika kochepa kwa magawo akulu akulu kuyenera kuganiziridwa. .
Kusintha kwa Microstrip kukhala SIW
Pamene mawonekedwe a microstrip akuyenera kulumikizidwa ndi SIW, kusintha kwa tapered microstrip ndi imodzi mwa njira zomwe zimakondedwa kwambiri, ndipo kusintha kwa tapered nthawi zambiri kumapereka machesi a burodibandi poyerekeza ndi kusintha kwina kosindikizidwa.Mapangidwe osinthika opangidwa bwino amakhala ndi mawonekedwe otsika kwambiri, ndipo kutayika kwa kuyika kumayamba chifukwa cha kutayika kwa dielectric ndi conductor.Kusankhidwa kwa gawo lapansi ndi zida za conductor makamaka kumatsimikizira kutayika kwa kusintha.Popeza makulidwe a gawo lapansi amalepheretsa kukula kwa mzere wa microstrip, magawo a kusintha kwa tapered ayenera kusinthidwa pamene makulidwe a gawo lapansi asintha.Mtundu wina wa coplanar waveguide (GCPW) ndiwogwiritsidwanso ntchito kwambiri pamakina othamanga kwambiri.Ma kondakitala am'mbali omwe ali pafupi ndi mzere wapakatikati wapakatikati amagwiranso ntchito ngati pansi.Posintha m'lifupi mwake chodyera chachikulu ndi kusiyana kwa nthaka yam'mbali, kuthekera kofunikirako kumatha kupezeka.
Microstrip kupita ku SIW ndi GCPW kupita ku SIW
Chithunzi chomwe chili pansipa ndi chitsanzo cha kapangidwe ka microstrip to SIW.Sing'anga yomwe imagwiritsidwa ntchito ndi Rogers3003, dielectric constant ndi 3.0, mtengo wotayika weniweni ndi 0.001, ndipo makulidwe ake ndi 0.127mm.M'lifupi mwake m'mbali zonse ziwiri ndi 0.28mm, zomwe zimafanana ndi m'lifupi mwa chodyetsa mlongoti.Kupyolera mu dzenje awiriwo ndi d=0.4mm, ndi katayanitsidwe p=0.6mm.Kukula koyerekeza ndi 50mm * 12mm * 0.127mm.Kutayika kwathunthu mu passband ndi pafupifupi 1.5dB (yomwe imatha kuchepetsedwa ndikuwongolera malo otalikirana).
Kapangidwe ka SIW ndi magawo ake a S
Kugawa kwamagetsi amagetsi@79GHz
Nthawi yotumiza: Jan-18-2024
