Kuti muzolowere zofunikira pa ngodya ya antenna ya chinthu chatsopano ndikugawana mawonekedwe a PCB sheet mold a m'badwo wakale, kapangidwe ka antenna kotsatiraku kangagwiritsidwe ntchito kuti antenna ipeze phindu la 14dBi@77GHz ndi magwiridwe antchito a radiation a 3dB_E/H_Beamwidth=40°. Pogwiritsa ntchito mbale ya Rogers 4830, makulidwe ake ndi 0.127mm, Dr=3.25, Df=0.0033.
Kapangidwe ka antenna
Pachithunzi pamwambapa, antenna ya microstrip grid imagwiritsidwa ntchito. antenna ya microstrip grid array ndi mawonekedwe a antenna opangidwa ndi zinthu zowala zotuluka ndi mizere yotumizira yopangidwa ndi mphete za N microstrip. Ili ndi kapangidwe kakang'ono, kukwera kwakukulu, kudyetsa kosavuta komanso Kusavuta kupanga ndi zabwino zina. Njira yayikulu ya polarization ndi linear polarization, yomwe ndi yofanana ndi ma antenna achikhalidwe a microstrip ndipo imatha kukonzedwa ndi ukadaulo wokongoletsa. Impedance ya grid, malo odyetsera, ndi kapangidwe kolumikizana pamodzi zimatsimikiza kufalikira kwamakono mu array yonse, ndipo mawonekedwe a radiation amadalira geometry ya grid. Kukula kwa grid imodzi kumagwiritsidwa ntchito kudziwa kuchuluka kwa antenna pakati.
Zogulitsa za RFMISO array antenna series:
RM-PA7087-43
RM-PA1075145-32
RM-SWA910-22
RM-PA10145-30
Kusanthula mfundo zazikulu
Mphamvu yamagetsi yomwe ikuyenda molunjika kumbali yoyima ya chinthu chozungulira ili ndi ma amplitude ofanana ndi reverse direction, ndipo mphamvu ya radiation ndi yofooka, zomwe sizikhudza kwambiri magwiridwe antchito a antenna. Ikani m'lifupi mwa selo l1 kukhala theka la kutalika kwa nthawi ndikusintha kutalika kwa selo (h) kuti mupeze kusiyana kwa gawo la 180° pakati pa a0 ndi b0. Pa radiation ya broadside, kusiyana kwa gawo pakati pa mfundo a1 ndi b1 ndi 0°.
Kapangidwe ka zinthu za mzere
Kapangidwe ka chakudya
Ma antenna amtundu wa gridi nthawi zambiri amagwiritsa ntchito kapangidwe ka chakudya cha coaxial, ndipo chodyetsa chimalumikizidwa kumbuyo kwa PCB, kotero chodyetsacho chiyenera kupangidwa kudzera m'magawo. Pakukonza kwenikweni, padzakhala cholakwika china cholondola, chomwe chidzakhudza magwiridwe antchito. Kuti mukwaniritse zomwe zafotokozedwa pachithunzi pamwambapa, kapangidwe ka chakudya chosiyana kangagwiritsidwe ntchito, ndi kusangalatsa kofanana kwa ma amplitude pamadoko awiriwa, koma kusiyana kwa gawo ndi 180°.
Kapangidwe ka chakudya cha Coaxial [1]
Ma antenna ambiri a microstrip grid array amagwiritsa ntchito coaxial feeding. Malo odyetsera a antenna ya grid array amagawidwa m'mitundu iwiri: center feeding (feeding point 1) ndi edge feeding (feeding point 2 ndi feeding point 3).
Kapangidwe ka gululi wamba
Pa nthawi yoperekera mphamvu m'mphepete, pamakhala mafunde oyenda omwe amazungulira gridi yonse pa antenna ya grid array, yomwe ndi gulu lopanda ma resonant single-direction end-fire. Antena ya grid array ingagwiritsidwe ntchito ngati antenna ya mafunde oyenda komanso antenna ya resonant. Kusankha ma frequency oyenera, malo operekera mphamvu, ndi kukula kwa grid kumalola grid kugwira ntchito m'magawo osiyanasiyana: mafunde oyenda (frequency sweep) ndi resonance (edge emission). Monga antenna ya mafunde oyenda, antenna ya grid array imagwiritsa ntchito mawonekedwe a chakudya choperekedwa m'mphepete, pomwe mbali yayifupi ya grid imakhala yayikulu pang'ono kuposa gawo limodzi mwa magawo atatu a kutalika kwa mafunde otsogozedwa ndi mbali yayitali pakati pa nthawi ziwiri kapena zitatu kutalika kwa mbali yayifupi. Mphamvu yomwe ili kumbali yayifupi imatumizidwa kumbali inayo, ndipo pali kusiyana kwa gawo pakati pa mbali zazifupi. Ma antenna a grid a mafunde oyenda (osapereka mphamvu) amawonetsa mipiringidzo yopendekeka yomwe imasiyana ndi njira yachibadwa ya grid plane. Njira ya beam imasintha ndi ma frequency ndipo ingagwiritsidwe ntchito pofufuza ma frequency. Pamene antenna ya grid array ikugwiritsidwa ntchito ngati antenna yolumikizana, mbali zazitali ndi zazifupi za grid zimapangidwa kuti zikhale kutalika kwa mafunde koyendetsa ndi theka la kutalika kwa mafunde koyendetsa kwa mafunde apakati, ndipo njira yodyetsera yapakati imagwiritsidwa ntchito. Mphamvu yamagetsi ya grid antenna mu mkhalidwe wa resonant imapereka kugawa kwa mafunde oyima. Kuwala kwa magetsi kumachitika makamaka ndi mbali zazifupi, ndipo mbali zazitali zimagwira ntchito ngati mizere yotumizira. Antena ya grid imapeza mphamvu yabwino ya mafunde, kuwala kwakukulu kumakhala mu mkhalidwe wa mafunde a mbali zonse, ndipo polarization imafanana ndi mbali yayifupi ya grid. Pamene mafunde asiyana ndi mafunde apakati omwe adapangidwa, mbali yayifupi ya grid siilinso theka la kutalika kwa mafunde otsogolera, ndipo kugawanika kwa beam kumachitika mu mawonekedwe a mafunde. [2]
Chitsanzo cha Array ndi kapangidwe kake ka 3D
Monga momwe zasonyezedwera pachithunzi pamwambapa cha kapangidwe ka antenna, komwe P1 ndi P2 zili kunja kwa gawo la 180°, ADS ingagwiritsidwe ntchito poyeserera (sikunaperekedwe m'nkhaniyi). Mwa kudyetsa doko lodyetsa mosiyanasiyana, kugawa kwamagetsi pa chinthu chimodzi cha gridi kumatha kuwonedwa, monga momwe zasonyezedwera mu kusanthula kwa mfundo. Mafunde omwe ali pamalo a longitudinal ali mbali zosiyana (kuletsa), ndipo mafunde omwe ali pamalo opingasa ali ofanana amplitude komanso mu gawo (superposition).
Kugawidwa kwamakono pa mikono yosiyanasiyana1
Kugawidwa kwamakono pa mikono yosiyanasiyana 2
Zomwe zili pamwambapa zikupereka mwachidule chiyambi cha antenna ya grid, ndipo zimapanga gulu pogwiritsa ntchito kapangidwe ka microstrip feed komwe kamagwira ntchito pa 77GHz. Ndipotu, malinga ndi zofunikira pa radar detection, manambala oyima ndi opingasa a grid akhoza kuchepetsedwa kapena kuwonjezeredwa kuti apange kapangidwe ka antenna pa ngodya inayake. Kuphatikiza apo, kutalika kwa mzere wotumizira wa microstrip kungasinthidwe mu netiweki yosiyana kuti akwaniritse kusiyana kwa gawo loyenera.
Nthawi yotumizira: Januwale-24-2024
