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 amandla esignali ngendlela ephumelelayo 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 ithusi) 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
