Ukuze uvumelane nezidingo ze-engeli ye-antenna yomkhiqizo omusha futhi wabelane ngesikhunta seshidi le-PCB lesizukulwane sangaphambilini, isakhiwo esilandelayo se-antenna singasetshenziswa ukuzuza inzuzo ye-antenna engu-14dBi@77GHz nokusebenza kwemisebe engu-3dB_E/H_Beamwithth=40°.Kusetshenziswa ipuleti le-Rogers 4830, ukujiya okungu-0.127mm, Dk=3.25, Df=0.0033.
Isakhiwo se-antenna
Kulo mfanekiso ongenhla, kusetshenziswa i-antenna yegridi ye-microstrip.I-antenna yohlu lwegridi ye-microstrip iyifomu le-antenna elakhiwe izici ezikhipha imisebe kanye nemigqa yokudlulisela eyakhiwe ngamaringi we-N microstrip.Inesakhiwo esihlangene, inzuzo ephezulu, ukondla okulula kanye nokwenza lula ukukhiqiza nezinye izinzuzo.Indlela eyinhloko ye-polarization i-linear polarization, efana ne-microstrip antenna evamile futhi ingacutshungulwa ngobuchwepheshe bokufaka.Ukuthikamezeka kwegridi, indawo yokuphakelayo, kanye nesakhiwo sokuxhumanisa ndawonye kunquma ukusatshalaliswa kwamanje kuhlelo lonke, nezici zemisebe zincike kujometri yegridi.Usayizi wegridi eyodwa usetshenziselwa ukunquma imvamisa emaphakathi yothi.
Imikhiqizo yochungechunge lwe-antenna ye-RFMISO:
RM-PA7087-43
RM-PA1075145-32
I-RM-SWA910-22
RM-PA10145-30
Ukuhlaziya izimiso
Okugeleza njengamanje kuqonde mpo kwento ye-array inobude obulinganayo kanye nesiqondiso esibuyela emuva, futhi amandla emisebe abuthakathaka, anomthelela omncane ekusebenzeni kwe-antenna.Setha ububanzi beseli u-l1 ukuya kuhhafu we-wavelength futhi ulungise ubude beseli (h) ukuze uzuze umehluko wesigaba sika-180° phakathi kuka-a0 no-b0.Emisebeni ebanzi, umehluko wesigaba phakathi kwamaphoyinti angu-a1 no-b1 ngu-0°.
Isakhiwo se-elementi ye-array
Isakhiwo sokuphakelayo
Ama-antenna ohlobo lwegridi ngokuvamile asebenzisa isakhiwo sokuphakela kwe-coaxial, futhi isiphakeli sixhunywe ngemuva kwe-PCB, ngakho okokuphakelayo kudinga ukuklanywa ngezendlalelo.Ngokucubungula kwangempela, kuzoba nephutha elithile lokunemba, elizothinta ukusebenza.Ukuze kuhlangatshezwane nolwazi lwesigaba oluchazwe emfanekisweni ongenhla, isakhiwo sokuphakelayo esihlukanisayo singasetshenziswa, esinesasasa le-amplitude elilinganayo kumachweba amabili, kodwa umehluko wesigaba ongu-180°.
Isakhiwo se-coaxial feed[1]
Iningi lama-antenna e-microstrip grid array asebenzisa i-coaxial feeding.Izindawo zokuphakela ze-antenna yohlu lwegridi zihlukaniswe ngokuyinhloko zibe izinhlobo ezimbili: indawo yokudla emaphakathi (iphoyinti lokuphakela 1) kanye ne-edge feed (iphoyinti lokuphakelayo 2 kanye nephoyinti lokuphakelayo 3).
Isakhiwo samalungu afanayo egridi evamile
Ngesikhathi sokuphakelwa konqenqema, kunamagagasi ahambayo ahlanganisa yonke igridi ku-antenna yohlelo lwegridi, okuwuhlelo lokuphela komlilo olungaguquki olunye uhlangothi.I-antenna yohlelo lwegridi ingasetshenziswa njengokubili i-antenna yegagasi ehambayo kanye ne-resonant antenna.Ukukhetha imvamisa efanelekile, indawo yokuphakelayo, nosayizi wegridi kuvumela igridi ukuthi isebenze ezimeni ezihlukene: igagasi elihambayo (i-frequency sweep) kanye ne-resonance (i-edge emission).Njenge-antenna ehambayo, i-antenna yohlelo lwegridi yamukela ifomu lokuphakelayo elifunzwa emaphethelweni, nohlangothi olufushane lwegridi lube lukhulu kancane kunengxenye eyodwa kwezintathu yobude obuqondisiwe kanye nohlangothi olude phakathi kokuphindwe kabili noma kathathu ubude bohlangothi olufushane. .I-current ohlangothini olufushane idluliselwa kolunye uhlangothi, futhi kukhona umehluko wesigaba phakathi kwezinhlangothi ezifushane.Ama-antenna egridi yegagasi elihambayo (okungaguquki) akhipha imisebe etshekile echezuka endleleni evamile yendiza yegridi.Isikhombisi-ndlela se-beam sishintsha ngokuvama futhi singasetshenziselwa ukuskena imvamisa.Lapho i-antenna yohlelo lwegridi isetshenziswa njengothi olukhalayo, izinhlangothi ezinde nezifushane zegridi zidizayinelwe ukuthi zibe ubude beza obuhambayo obubodwa kanye nohhafu wobude begagasi obuphathekayo befrikhwensi emaphakathi, futhi kwamukelwa indlela emaphakathi yokudla.Umsinga osheshayo we-antenna yegridi esesimweni esizwakalayo wethula ukusatshalaliswa kwegagasi okumile.Imisebe ikhiqizwa ikakhulukazi izinhlangothi ezifushane, izinhlangothi ezinde zisebenza njengezintambo zokudlulisela.I-antenna yegridi ithola umphumela ongcono wemisebe, imisebe ephezulu kakhulu isesimweni semisebe yohlangothi olubanzi, futhi i-polarization ihambisana nohlangothi olufushane lwegridi.Uma ifrikhwensi ichezuka kufrikhwensi eklanyelwe emaphakathi, uhlangothi olufushane lwegridi aluseyona ingxenye yobude begagasi lomhlahlandlela, futhi ukuhlukaniswa kwe-beam kwenzeka kuphethini yemisebe.[2]
Imodeli ye-Array kanye nephethini yayo ye-3D
Njengoba kukhonjisiwe esithombeni esingenhla sesakhiwo se-antenna, lapho i-P1 ne-P2 ziphuma ngo-180° esigabeni, i-ADS ingasetshenziselwa ukulingisa okuhleliwe (okungamodelwanga kulesi sihloko).Ngokuphakela ngokuhlukile imbobo yokuphakelayo, ukusatshalaliswa kwamanje kwesici segridi eyodwa kungabonwa, njengoba kuboniswe ekuhlaziyeni okuyisisekelo.Ama-currents endaweni ye-longitudinal ahlukene (ukukhansela), futhi ama-currents endaweni eguquguqukayo ane-amplitude elinganayo futhi esesigabeni (i-superposition).
Ukusatshalaliswa kwamanje ezingalweni ezahlukene1
Ukusatshalaliswa kwamanje ezingalweni ezahlukene 2
Okungenhla kunikeza isingeniso esifushane ku-antenna yegridi, futhi iklama uhlu kusetshenziswa ukwakheka kwesiphakeli se-microstrip esisebenza ku-77GHz.Eqinisweni, ngokuya ngezidingo zokuthola i-radar, izinombolo ezimile nezivundlile zegridi zingancishiswa noma zikhuliswe ukuze kuzuzwe umklamo we-antenna nge-engeli ethile.Ngaphezu kwalokho, ubude bomugqa wokudlulisa we-microstrip bungashintshwa kunethiwekhi yokuphakelayo ehlukile ukuze kuzuzwe umehluko wesigaba ohambisanayo.
Isikhathi sokuthumela: Jan-24-2024
