Kumasekhethi noma amasistimu e-microwave, yonke isekethe noma isistimu ivamise ukwakhiwa ngamadivayisi amaningi ayisisekelo e-microwave njengezihlungi, ama-couplers, ama-power dividers, njll. Kwethenjwa ukuthi ngalezi mishini, kungenzeka ukudlulisa kahle amandla esignali ukusuka endaweni eyodwa ukuya kwelinye. enye enokulahlekelwa okuncane;
Kuwo wonke amasistimu erada yemoto, ukuguqulwa kwamandla ikakhulukazi kuhilela ukudluliswa kwamandla ukusuka ku-chip ukuya kokuphakelayo ebhodini le-PCB, ukudluliselwa kwesiphakeli emzimbeni we-antenna, kanye nemisebe esebenza kahle yamandla ngothi. Kuyo yonke inqubo yokudlulisa amandla, ingxenye ebalulekile ukwakheka kwesiguquli. Iziguquli ezinhlelweni zamagagasi ama-millimeter ikakhulukazi zihlanganisa ukuguqulwa kwe-microstrip kuya ku-substrate ehlanganisiwe ye-waveguide (SIW), i-microstrip ibe ukuguqulwa kwe-waveguide, ukuguqulwa kwe-SIW kuya ku-waveguide, ukuguqulwa kwe-coaxial kuya ku-waveguide, ukuguqulwa kwe-waveguide kuya ku-waveguide kanye nezinhlobo ezahlukene zokuguqulwa kwe-waveguide. Le nkinga izogxila ekwakhiweni kokuguqulwa kwe-microband SIW.
Izinhlobo ezahlukene zezakhiwo zokuthutha
I-Microstripingenye yezakhiwo zomhlahlandlela ezisetshenziswa kakhulu kumafrikhwensi ama-microwave aphansi. Izinzuzo zayo eziyinhloko ziyisakhiwo esilula, izindleko eziphansi kanye nokuhlanganiswa okuphezulu nezingxenye ze-surface mount. Ulayini we-microstrip ojwayelekile wakhiwa kusetshenziswa ama-conductor ohlangothini olulodwa lwe-dielectric layer substrate, yakhe indiza eyodwa yomhlabathi ngakolunye uhlangothi, enomoya ngaphezu kwayo. I-conductor ephezulu ngokuyisisekelo iyimpahla yokuqhuba (imvamisa yethusi) emise okwentambo encane. Ububanzi bomugqa, ukujiya, imvume ehlobene, kanye ne-dielectric loss tangent ye-substrate yimingcele ebalulekile. Ukwengeza, ubukhulu bekhondakta (okungukuthi, ukujiya kwe-metalization) kanye nokuhamba kwekhondatha nakho kubalulekile kumafrikhwensi aphezulu. Ngokucabangela ngokucophelela lezi zinhlaka kanye nokusebenzisa imigqa ye-microstrip njengeyunithi eyisisekelo yamanye amadivaysi, amathuluzi amaningi e-microwave ephrintiwe kanye nezingxenye kungaklanywa, njengezihlungi, ama-couplers, ama-power dividers/combiners, izixube, njll. Nokho njengoba imvamisa inyuka (uma uthuthela ku- amafrikhwensi ama-microwave aphezulu kakhulu) ukulahleka kokudlulisela kuyakhula kanye nemisebe. Ngakho-ke, ama-waveguides angamashubhu angenalutho njengamagagasi angama-rectangular akhethwa ngenxa yokulahlekelwa okuncane kumafrikhwensi aphezulu (ayikho imisebe). Ingaphakathi le-waveguide ngokuvamile liwumoya. Kodwa uma uthanda, ingagcwaliswa ngezinto ze-dielectric, inikeze isiphambano esincane kune-waveguide egcwele igesi. Kodwa-ke, ama-waveguide eshubhu angenalutho avame ukuba yinqwaba, angaba nzima ikakhulukazi kumaza aphansi, adinga izidingo eziphakeme zokukhiqiza futhi ayabiza, futhi awakwazi ukuhlanganiswa nezakhiwo eziphrintiwe ezihleliwe.
RFMISO MICROSTRIP ANTENNA PRODUCTS:
RM-MA25527-22,25.5-27GHz
RM-MA425435-22,4.25-4.35GHz
Esinye isakhiwo sokuqondisa esiyingxube phakathi kwesakhiwo se-microstrip kanye ne-waveguide, ebizwa ngokuthi i-substrate integrated waveguide (SIW). I-SIW iyisakhiwo esihlanganisiwe esifana ne-waveguide esakhiwe ezintweni ze-dielectric, esinamakhondaktha phezulu nangaphansi kanye nomugqa olandelanayo wezinsimbi ezimbili zensimbi ezakha izindonga eziseceleni. Uma kuqhathaniswa nezakhiwo ze-microstrip ne-waveguide, i-SIW iyonga imali, inenqubo yokukhiqiza elula, futhi ingahlanganiswa namadivayisi ahleliwe. Ngaphezu kwalokho, ukusebenza kumafrikhwensi aphezulu kungcono kunokwakheka kwe-microstrip futhi kunezici zokuhlakazeka kwe-waveguide. Njengoba kuboniswe kuMfanekiso 1;
Imihlahlandlela yokuklama ye-SIW
Ama-waveguide ahlanganisiwe e-Substrate (SIWs) ayizakhiwo ezihlanganisiwe ezifana ne-waveguide ezakhiwe ngokusebenzisa imigqa emibili yensimbi eshumekwe ku-dielectric exhuma amapuleti ensimbi amabili ahambisanayo. Imigqa yensimbi ngokusebenzisa izimbobo yakha izindonga eziseceleni. Lesi sakhiwo sinezici zemigqa ye-microstrip nama-waveguides. Inqubo yokukhiqiza iphinde ifane nezinye izakhiwo eziyisicaba eziphrintiwe. Ijiyomethri ye-SIW evamile iboniswa kuMfanekiso 2.1, lapho ububanzi bayo (okungukuthi, ukwehlukana phakathi kwe-vias ohlangothini oluseceleni (as)), ububanzi be-vias (d) nobude bephitshi (p) kusetshenziswa ukuklama isakhiwo se-SIW. Imingcele yejiyomethri ebaluleke kakhulu (eboniswe kuMfanekiso 2.1) izochazwa esigabeni esilandelayo. Qaphela ukuthi imodi evelele yi-TE10, njenge-waveguide engunxande. Ubudlelwano phakathi kwe-cutoff frequency fc yamagagasi agcwele umoya (AFWG) namagagasi agcwele i-dielectric (DFWG) kanye nobukhulu u-a no-b iphuzu lokuqala lomklamo we-SIW. Kumagagasi agcwele umoya, imvamisa yokunqamuka injengoba kukhonjisiwe kufomula engezansi
Isakhiwo esiyisisekelo se-SIW kanye nefomula yokubala[1]
lapho u-c eyijubane lokukhanya endaweni ekhululekile, u-m no-n kuyizindlela, usayizi we-waveguide omude, futhi u-b ungusayizi we-waveguide omfushane. Uma i-waveguide isebenza kumodi ye-TE10, ingenziwa lula ukuze ibe fc=c/2a; lapho i-waveguide igcwaliswa nge-dielectric, ubude be-broadside a bubalwa nge-ad=a/Sqrt(εr), lapho u-εr kuyi-dielectric constant ye-medium; ukuze kwenziwe i-SIW isebenze ngemodi ye-TE10, ukuhlukaniswa kwembobo okudlula u-p, ububanzi d kanye nohlangothi olubanzi njengoba kufanele lwenelise ifomula engenhla kwesokudla somfanekiso ongezansi, futhi kukhona namafomula anamandla okuthi d<λg kanye no-p<2d [ 2];
lapho u-λg kuwubude begagasi obuqondisiwe: Ngasikhathi sinye, ukujiya kwe-substrate angeke kuthinte ukwakheka kosayizi we-SIW, kodwa kuzothinta ukulahleka kwesakhiwo, ngakho-ke izinzuzo zokulahlekelwa okuphansi kwama-substrates anobukhulu obuphezulu kufanele zicatshangelwe. .
Ukuguqulwa kwe-Microstrip kuya ku-SIW
Uma isakhiwo se-microstrip sidinga ukuxhunywa ku-SIW, ukuguqulwa kwe-tapered microstrip kungenye yezindlela zokuguqula ezithandwayo, futhi ukuguqulwa kwe-tapered ngokuvamile kuhlinzeka ngokufana kwe-broadband uma kuqhathaniswa nezinye izinguquko eziphrintiwe. Isakhiwo soguquko esiklanywe kahle sinokubonisa okuphansi kakhulu, futhi ukulahlekelwa kokufaka kubangelwa ngokuyinhloko ukulahlekelwa kwe-dielectric kanye ne-conductor. Ukukhethwa kwe-substrate kanye nezinto ze-conductor ikakhulukazi kunquma ukulahlekelwa kwenguquko. Njengoba ukushuba kwe-substrate kuvimbela ububanzi bomugqa we-microstrip, imingcele yokuguqulwa kwe-tapered kufanele ilungiswe lapho ubukhulu be-substrate bushintsha. Olunye uhlobo lwe-grounded coplanar waveguide (GCPW) nalo luyisakhiwo somugqa wokudlulisa osetshenziswa kabanzi ezinhlelweni zamafrikhwensi aphezulu. Amakhondatha aseceleni aseduze nolayini wokudlulisa ophakathi nawo asebenza njengendawo ephansi. Ngokulungisa ububanzi bomphakeli oyinhloko kanye negebe emhlabathini oseceleni, i-impedance yesici edingekayo ingatholakala.
I-Microstrip ukuya ku-SIW ne-GCPW kuya ku-SIW
Umfanekiso ongezansi uyisibonelo sokuklanywa kwe-microstrip ku-SIW. I-medium esetshenzisiwe i-Rogers3003, i-dielectric constant ingu-3.0, inani langempela lokulahlekelwa ngu-0.001, futhi ubukhulu bungu-0.127mm. Ububanzi besiphakeli kuzo zombili iziphetho buyi-0.28mm, obufana nobubanzi besiphakeli se-antenna. I-diameter yembobo edlulayo ingu-d=0.4mm, futhi isikhala p=0.6mm. Usayizi wokulingisa ngu-50mm*12mm*0.127mm. Ukulahlekelwa kukonke ku-passband cishe ku-1.5dB (okungancishiswa ngokuqhubekayo ngokuthuthukisa isikhala esiseceleni esibanzi).
Isakhiwo se-SIW kanye nemingcele yayo ye-S
Ukusatshalaliswa kwenkundla kagesi@79GHz
Isikhathi sokuthumela: Jan-18-2024
