Kuti ienderane nezvinodiwa ne antenna angle yechigadzirwa chitsva uye igovane PCB sheet mold yechizvarwa chakapfuura, antenna layout inotevera inogona kushandiswa kuwana antenna gain ye14dBi@77GHz uye radiation performance ye3dB_E/H_Beamwidth=40°. Uchishandisa Rogers 4830 plate, ukobvu 0.127mm, Dr=3.25, Df=0.0033.
Kurongeka kweAntena
Mumufananidzo uri pamusoro apa, antenna yegrid ye microstrip inoshandiswa. Iyo antenna yegrid ye microstrip imhando yeantenna inoumbwa nezvinhu zvinopenya zvinobuda uye mitsetse yekutumira inoumbwa neN microstrip rings. Ine chimiro chakabatana, gain yakakwira, nyore kudyisa uye nyore kugadzira nezvimwe zvakanakira. Nzira huru yepolarization ndeye linear polarization, iyo yakafanana ne microstrip antennas dzemazuva ano uye inogona kugadziriswa ne etching technology. Impedance yegrid, nzvimbo yekudyisa, uye chimiro chekubatanidza pamwe chete zvinosarudza kugoverwa kwazvino mu array, uye hunhu hwemwaranzi hunoenderana ne geometry yegrid. Saizi yegrid imwe chete inoshandiswa kuona frequency yepakati ye antenna.
Zvigadzirwa zveRFMISO array antenna series:
RM-PA7087-43
RM-PA1075145-32
RM-SWA910-22
RM-PA10145-30
Kuongorora nheyo
Kuyerera kwemagetsi munzira yakatwasuka yechinhu che array kune amplitude yakaenzana uye reverse direction, uye kugona kwemwaranzi hakuna kusimba, izvo hazvina simba pakushanda kweantenna. Isa upamhi hwesero l1 kune hafu yewavelength uye gadzirisa kukwirira kwesero (h) kuti uwane musiyano wechikamu we180° pakati paa0 na b0. Kune mwaranzi yebroadside, musiyano wechikamu pakati pemapoinzi a1 na b1 i0°.
Chimiro chechinhu cheArray
Chimiro chekudya
Ma antenna emhando yegrid anowanzo shandisa chimiro che coaxial feed, uye feeder yakabatana kumashure kwePCB, saka feeder inofanira kugadzirwa kuburikidza ne layers. Pakugadzirisa chaiko, pachava nekukanganisa kwakati, izvo zvinokanganisa mashandiro. Kuti zvisvike paruzivo rwechikamu chakatsanangurwa mumufananidzo uri pamusoro, chimiro che planar differential feed chinogona kushandiswa, ne amplitude excitation yakaenzana pama ports maviri, asi phase difference ye 180°.
Chimiro chekudya cheCoaxial [1]
Mazhinji ema microstrip grid array antenna anoshandisa coaxial feeding. Nzvimbo dzekudyisa dze grid array antenna dzakakamurwa kuita mhando mbiri: centre feeding (feeding point 1) uye edge feeding (feeding point 2 uye feeding point 3).
Chimiro chegrid array chakajairika
Munguva yekudyisa mumucheto, kune mafungu anotenderera pagrid yese pa grid array antenna, inova non-resonant single-direction end-fire array. Grid array antenna inogona kushandiswa se traveling wave antenna uye resonant antenna. Kusarudza frequency yakakodzera, feed point, uye grid size zvinoita kuti grid ishande mumamiriro akasiyana: traveling wave (frequency sweep) uye resonance (edge emission). Se traveling wave antenna, grid array antenna inoshandisa edge-fed feed form, nerutivi rupfupi rwegrid rwakakura zvishoma kupfuura chikamu chimwe muzvitatu che wavelength yakatungamirirwa uye rutivi rurefu pakati pehurefu hwechipiri kana katatu hwerutivi rupfupi. Current iri kurutivi rupfupi inotumirwa kune rumwe rutivi, uye pane musiyano wechikamu pakati pemativi mapfupi. Traveling wave (non-resonant) grid antennas inoburitsa tilted beams dzinotsauka kubva kune yakajairika grid plane. Beam direction inoshanduka ne frequency uye inogona kushandiswa pa frequency scanning. Kana antenna yegrid array ikashandiswa seantenna inoburitsa chiedza, mativi marefu nemapfupi egrid akagadzirwa kuti ave wavelength imwe chete inoburitsa chiedza uye hafu yewavelength inoburitsa chiedza yefrequency yepakati, uye nzira yekudya yepakati inotorwa. Kupararira kwemhepo kwe grid antenna mumamiriro ekuratidza chiedza kunoratidza kupararira kwemafungu akamira. Kuratidzwa kwechiedza kunonyanya kugadzirwa nemativi mapfupi, mativi marefu achishanda semitsetse yekutumira. Antenna yegrid inowana mhedzisiro iri nani yemwaranzi, mwaranzi yepamusoro iri mumamiriro emwaranzi yakafara, uye polarization inofanana nedivi pfupi regrid. Kana frequency ikatsauka kubva pafrequency yakagadzirwa pakati, divi pfupi regrid harisisiri hafu yewavelength yegwara, uye kupatsanurwa kwemwaranzi kunoitika muchimiro chemwaranzi. [2]
Muenzaniso weArray uye patani yayo ye3D
Sezvakaratidzwa mumufananidzo uri pamusoro apa wechimiro cheantenna, apo P1 neP2 zviri kunze kwechikamu 180°, ADS inogona kushandiswa pakuenzanisa kwe schematic (hazvina kutevedzera muchinyorwa chino). Nekupa feed port nenzira yakasiyana, kugoverwa kwe current pane chimwe chinhu chegrid kunogona kuonekwa, sezvakaratidzwa mu principle analysis. Ma currents ari munzvimbo ye longitudinal ari munzira dzakasiyana (cancellation), uye ma currents ari munzvimbo ye transverse ane amplitude yakaenzana uye ari muchikamu (superposition).
Kugoverwa kwazvino pamaoko akasiyana1
Kugoverwa kwazvino pamaoko akasiyana 2
Zviri pamusoro apa zvinopa sumo pfupi ye grid antenna, uye zvinogadzira array uchishandisa microstrip feed structure inoshanda pa77GHz. Kutaura zvazviri, zvichienderana nezvinodiwa ne radar detection, nhamba dzakamira nedzakatsetseka dzegrid dzinogona kuderedzwa kana kuwedzerwa kuti pave ne antenna design pa angle chaiyo. Pamusoro pezvo, kureba kwe microstrip transmission line kunogona kuchinjwa mu differential feed network kuti pave ne phase difference inoenderana.
Nguva yekutumira: Ndira-24-2024
