A antenna ya slotndi mtundu wa antenna yotseguka yomwe imapangidwa popanga malo amodzi kapena angapo pamalo oyendetsera magetsi, monga mbale yachitsulo, khoma lozungulira, kapena khoma lowongolera mafunde. Pamene minda yamagetsi imasuntha malowo, malo otsegukawo amakhala chinthu chowunikira ndipo amaphatikiza mphamvu kuchokera ku kapangidwe kotsogozedwa kapena kotsekedwa kupita kumalo omasuka.
Ngakhale kapangidwe koyambira ka antenna ya slot kangawoneke kosavuta, mapangidwe ozikidwa pa slot amachita gawo lofunikira mu RF yamakono ndi uinjiniya wa microwave.kutalika kwa malo, m'lifupi, malo, momwe malo akuyendera, kusangalatsa, ndi kapangidwe kozungulira, mainjiniya amatha kupeza mitundu yosiyanasiyana ya impedance, polarization, radiation pattern, ndi beam.
Ma antenna a slot amatha kugwiritsidwa ntchito ngati ma radiator osiyana kapena kukonzedwa m'magawo akuluakuluma waveguide a slotted, zomwe zimapangitsa kuti zikhale zothandiza pa radar, kulumikizana, kuyeza, kuzindikira, ndi machitidwe ena a microwave. Nkhani yoyambirira yofotokozera ikuwonetsa antenna yolowera ngati malo otseguka amakona anayi pamalo oyendetsera ndipo imafotokoza momwe imagwirira ntchito pogwiritsa ntchito mfundo ya Babinet.
1. Kodi Antena Yolowetsa Ma Slot Ndi Chiyani?
Antena yosavuta kwambiri yolumikizira imatha kuwonetsedwa ngati khomo lopapatiza lozungulira lomwe limadulidwa kukhala pepala loyendetsa.
Pamene gawo la RF lakhazikitsidwa kudutsa mpata uwu, mafunde oyenda pamwamba pa chitsulo chozungulira amasokonezeka, ndipo mphamvu yamagetsi imafalikira kudzera mu malo olowera.
Mu kusanthula kwa chiphunzitso, pepala loyendetsera nthawi zambiri limaonedwa ngati lalikulu kwambiri komanso loyendetsa bwino. Komabe, ma antenna enieni amagwiritsa ntchito malo achitsulo ocheperako, makoma owongolera mafunde, mabowo, kapena mapangidwe ena othandiza. Chifukwa chake, kukula ndi malo ozungulira malo olowera amakhudza machitidwe enieni a antenna.
Mosiyana ndi antenna ya waya, komwe mphamvu yamagetsi imayenda motsatira chinthu choyendetsa magetsi, antenna yolowetsa magetsi imachokera kukutsegula kwa kapangidwe ka conductingUbale wothandizana uwu ndi chimodzi mwa zifukwa zomwe ma antenna a slot amagwirizanirana kwambiri ndi mfundo ya Babinet.
2. Kuchuluka kwa Ma Slot Antennas Ogwira Ntchito
Buku loyambirira limayambitsa300 MHz mpaka 30 GHzmonga malo ogwiritsira ntchito ma antenna a slot. Izi ndizothandiza ngati chiyambi cha mawu onse, koma siziyenera kutanthauziridwa ngati malire a pafupipafupi.
Mu uinjiniya wa ma antenna, kuchuluka kwa ma frequency omwe angagwiritsidwe ntchito kumadalira kapangidwe kake. Zinthu zofunika ndi izi:
- Utali ndi m'lifupi mwa malo
- Kuyendetsa miyeso ya pamwamba
- Njira yodyetsera
- Chitsogozo cha mafunde kapena mawonekedwe a m'mimba
- Njira yogwiritsira ntchito
- Kutalikirana kwa zinthu mu gulu
Ma antenna a slot amapezeka kwambiri m'makina a microwave chifukwa ma slot amatha kuphatikizidwa mosavuta m'makoma a waveguide. Pa ma frequency apamwamba, kutalika kwa mafunde ang'onoang'ono kumalolanso kuti ma slot angapo akonzedwe m'magawo ang'onoang'ono owongolera kwambiri.
3. Kodi Antena Yolowetsa Ma Slot Imagwira Ntchito Bwanji?
Pamene magetsi amagetsi akugwedezeka mkati kapena pafupi ndi kapangidwe kake, mafunde a pamwamba amayenda motsatira chitsulocho.
Kuyika malo olowera kumasokoneza njira yamagetsi yanthawi zonse. Magawo amphamvu amagetsi amatha kufalikira ponseponse, ndipo malo olowerawo amaphatikiza gawo la mphamvu yamagetsi kukhala malo omasuka.
Khalidwe lenileni la ma radiation limadalira momwe malowo amasangalalira.
Mwachitsanzo, muantenna yowongolera mafunde, malo ndi momwe malowo alili poyerekeza ndi kugawa kwa mafunde a waveguide kumatsimikiza momwe malowo akusangalalira kwambiri. Kenako malo angapo amatha kuyikidwa ndi kugawidwa m'malo osiyanasiyana kuti apange gulu lomwe likufuna kukhala ndi mawonekedwe a gain ndi beam.
Ichi ndichifukwa chake kapangidwe ka ma antenna a slot si nkhani yongofuna "kudula dzenje mu chitsulo." Maonekedwe a malo, malo, malo, gawo, ndi kapangidwe ka chakudya ziyenera kuganiziridwa pamodzi.
Chithunzi 1. Kapangidwe kothandiza ka malo komwe kakuwonetsa kuwala kwa maginito kudzera m'mabowo omwe ali pamwamba pa conductive.
4. Mfundo ya Babinet ndi Ma Antena a Slot
Limodzi mwa mfundo zothandiza kwambiri pomvetsetsa ma antenna a slot ndiMfundo ya Babinet, makamaka kufalikira kwake kwa maginito.
Lingaliro lofunikira ndi kuyerekeza mapangidwe awiri ogwirizana:
- Chipinda chodulidwa mu ndege yoyendetsera
- Mzere woyendetsa womwe uli ndi mawonekedwe ofanana ndi malo amenewo
Ngati madera achitsulo ndi otseguka a nyumba imodzi asinthidwa, awiriwa amaonedwa kuti ndi ogwirizana.
Mu chiphunzitso cha antenna, mawonekedwe a radiation a antenna yolowetsa zinthu akhoza kugwirizanitsidwa ndi kapangidwe kake kofanana ndi dipole. Mawonekedwe a radiation amagwirizana kwambiri, pomwe maudindo amagetsi ndi maginito amasinthasintha. Izi zikutanthauzanso kuti polarization ya slot ndi yofanana ndi ya dipole yolumikizirana.
Mwachitsanzo, malo opapatiza opingasa nthawi zambiri amapanga malo amagetsi ozungulira omwe ali opingasa ku mzere wautali wa malowo.
Choncho, mfundo ya Babinet ndi chida chofunikira kwambiri pomvetsetsa impedance, polarization, ndi radiation behavior ya ma antenna oyambira.
Chithunzi 2. Chithunzi cha kapangidwe kogwirizana komwe kamagwiritsidwa ntchito pofotokoza mfundo ya Babinet.
5. Antena ya Slot ndi Antena ya Dipole
Malo opapatiza ndi dipole yake yowonjezera zimapereka kufananiza kothandiza mu chiphunzitso cha antenna.
Zonsezi zitha kuwonetsa mawonekedwe ofanana a radiation pansi pa mikhalidwe yoyenera yogwirizana, koma mawonekedwe awo amagetsi ndi osiyana.
Pa dipole yachizolowezi, gawo lamagetsi nthawi zambiri limagwirizana ndi gawo la dipole. Pa gawo lowonjezera, gawo lamagetsi limakhala lolunjika ku mzere wautali wa gawolo.
Ubale wogwirizana uwu sukutanthauza kuti antenna iliyonse yogwira ntchito imagwira ntchito ngati dipole. Kapangidwe kake kangakhale ndi mapulaneti otsika, mabowo, ma waveguides, malo angapo, zida zamagetsi, ndi zigawo za makina zapafupi, zonse zomwe zimatha kusintha impedance ndi mawonekedwe a radiation.
6. Kapangidwe ka Radiation ndi Polarization
Nkhani yoyambirira ikufotokoza momwe ma radiation a antenna amagwirira ntchito ngati omnidirectional ndipo imayerekeza ndi theka la mafunde a dipole.
Pa malo osavuta olekanitsidwa mu ndege yayikulu yoyendetsera, mawonekedwe a radiation yofanana ndi dipole ndi njira yothandiza yoyambira. Komabe,"Zomwe zili m'mbali zonse" siziyenera kuonedwa ngati katundu wapadziko lonse wa ma antenna onse olowetsa zinthu.
Chitsanzo chomaliza chimadalira:
- Miyeso ya malo
- Kuyang'ana malo
- Malo oyendetsera galimoto
- Kapangidwe ka chakudya
- Chiwerengero cha mipata
- Kutalikirana kwa zinthu ndi gawo
- Zowunikira kapena mabowo kumbuyo kwa malo olowera
Mu gulu la mafunde olumikizidwa ndi slotted, malo angapo owunikira amatha kugwira ntchito limodzi kuti apange kuwala kopapatiza, kolunjika kwambiri komanso kukwera kwakukulu.
Kusiyana kumeneku n'kofunika kwambiri makamaka pokambirana za ma radar ndi ma antenna olumikizirana.
Chithunzi 3. Kapangidwe ka radiation kofanana ndi dipole komwe kamagwiritsidwa ntchito kufotokozera momwe antenna yoyambira imagwirira ntchito pansi pa mikhalidwe yabwino.
7. Ma Antena ndi Ma Arrays Oyendetsedwa ndi Ma Waveguide
Chimodzi mwa zinthu zofunika kwambiri pakugwiritsa ntchito ukadaulo wa ma antenna a slot ndiantenna yowongolera mafunde.
Mu kapangidwe kameneka, mipata yowunikira imadulidwa pakhoma la waveguide yonyamula mphamvu ya microwave. Mpata uliwonse umaphatikiza mphamvu yolamulidwa kuchokera ku waveguide ndikuyiyika pamalo omasuka.
Pamene malo angapo aikidwa panjira imodzi kapena zingapo zoyendetsera mafunde, amapangaantenna ya slot ya waveguide.
Mwa kuwongolera mosamala malo a malo, malo oimikapo, malo oti zinthu ziyende, komanso chisangalalo, opanga amatha kukwaniritsa izi:
- Phindu lalikulu
- M'lifupi mwake mulifupi mwake
- Ma sidelobe olamulidwa
- Kugawanika komwe kukufunika
- Mabowo ozungulira ang'onoang'ono
RF MISO ikupereka pakali panoMa Waveguide Slot Antennasndi zinthu zoyendetsedwa ndi mafunde a mafunde zomwe zimagwiritsidwa ntchito mu microwave. Mwachitsanzo, zinthu zake zimaphatikizapo ma antenna a mafunde ...
RF MISO imagwiritsanso ntchito mapangidwe a waveguide slot array mu ntchito yake ya R&D, kuphatikiza mapangidwe a X-band array.
8. Ubwino wa Ma Slot Antennas
Ma antenna a slot amapereka zabwino zingapo zothandiza:
Kuphatikiza kotsika
Mipata imatha kupangidwa mwachindunji m'magawo oyendetsera kapena makoma owongolera mafunde.
Kuphatikiza bwino kwa makina
Kapangidwe ka kuwala sikuti nthawi zonse kamafuna chinthu chakunja chotuluka.
Yoyenera ma antenna arrays
Malo angapo amatha kuphatikizidwa bwino kukhala ma planar kapena ma waveguide-feed arrays.
Kapangidwe ka mtanda wosinthasintha
Makonzedwe a malo ndi chisangalalo zimatha kukonzedwa bwino kuti zigwirizane ndi zosowa zosiyanasiyana za gain ndi radiation.
Kugwirizana ndi machitidwe a ma waveguide
Pa ma microwave ndi ma millimeter-wave frequency, malo otsetsereka amatha kuphatikizidwa mwachindunji ndi zida zodyetsera ma waveguide zomwe sizitaya kwambiri.
9. Zolepheretsa ndi Zoganizira za Kapangidwe
Ma antenna a slot amakumananso ndi mavuto angapo aukadaulo.
Malo amodzi angapereke phindu lochepa komanso kuwala kwakukulu. Kuti munthu akwaniritse njira yowongolera kwambiri nthawi zambiri amafunika kapangidwe ka gulu.
Magwiridwe antchito angakhalenso ofunikira pa:
- Kulondola kwa makina olowetsa
- Miyeso ya pansi
- Kulekerera kwa mafunde
- Kusiyana kwa malo pakati pa malo ndi malo
- Gawo lodyetsa
- Ubwino wa pamwamba
- Kulinganiza kapangidwe ka nyumba
Pa ma microwave ndi ma millimeter-wave frequency ambiri, zolakwika zazing'ono zamakina zimatha kuyimira gawo lalikulu la kutalika kwa mafunde. Chifukwa chake, kulondola kwa kupanga kumakhala kofunika kwambiri.
Nkhani yoyambirira yalemba kuti pali zovuta zambiri zokhudzana ndi kufalikira kwa ma cross-polarization komanso kuchepa kwa mphamvu ya ma radiation. Mwachidule, makhalidwe amenewa amadalira kwambiri kapangidwe kake ndipo sayenera kuonedwa ngati zinthu zosapeŵeka za ma antenna onse a slot kapena ma slot array.
10. Kugwiritsa Ntchito Ma Slot Antennas
Ma antenna a slot ndi ma slotted waveguide arrays amagwiritsidwa ntchito kwambiri mu RF ndi ma microwave system, kuphatikizapo:
- Machitidwe a radar
- Kulankhulana kwa maikulowevu
- Ma antenna a gulu
- Machitidwe oyendera
- Muyeso wa RF
- Machitidwe ozindikira
- Mapulatifomu a satellite ndi ndege
- Makina a antenna oyendetsedwa ndi mafunde
Buku loyambirira likuwonetsa makamaka njira zoyendera ma radar ndi ma waveguide-fed arrays ngati mapulogalamu ofala a slot antenna.
Pa makina a microwave owongolera kwambiri, ma slotted waveguide arrays amapereka njira yothandiza yophatikiziramawonekedwe a planar, kudyetsa ma waveguide, mawonekedwe a radiation olamulidwa, ndi kukula kwa array.
Mapeto
Antena yolowetsa magetsi imasintha mphamvu yamagetsi kukhala kuwala kwa malo opanda kanthu kudzera mu dzenje lopangidwa pamwamba pa conductive.
Ngakhale kuti mawonekedwe ake oyambira ndi osavuta, kachitidwe ka maginito amagetsi ka slot kamadalira kwambiri kukula kwake, momwe imayendera, kusangalatsa, ndi kapangidwe kake kozungulira.
Mfundo ya Babinet imapereka mgwirizano wothandiza pakati pa ma antenna olowetsa ndi mapangidwe owonjezera a dipole, zomwe zimathandiza mainjiniya kumvetsetsa mawonekedwe awo a polarization ndi radiation.
Mu uinjiniya wa microwave wothandiza, lingaliro la slot limakhala lamphamvu kwambiri likaphatikizidwa ndi ukadaulo wa waveguide. Mipata ingapo imatha kuphatikizidwa muma antenna olumikizidwa ndi mafunde, zomwe zimathandiza kuti pakhale kukwera kwa mphamvu, m'lifupi mwa beam, komanso mapangidwe a antenna opangidwa ndi ma radar, kulumikizana, kuyeza, ndi kuzindikira.
Nthawi yotumizira: Ogasiti-28-2026
