Umzobo woku-1 ubonisa umzobo oqhelekileyo we-waveguide slotted, onesakhiwo eside kunye nesincinci se-waveguide kunye ne-slot phakathi.Le slot ingasetyenziselwa ukuhambisa amaza e-electromagnetic.
umfanekiso 1. Ijiyometri yezona zixhaphakileyo slotted waveguide eriyali.
Isiphelo sangaphambili (Y = 0 ubuso obuvulekileyo kwindiza ye-xz) i-eriyali iyondliwa.Isiphelo esikude sikholisa ukuba yisekethe emfutshane (i-metallic enclosure).I-waveguide inokuchulumanciswa yi-dipole emfutshane (ebonwa ngasemva kwi-eriyali ye-cavity slot) kwiphepha, okanye ngenye i-waveguide.
Ukuqala ukuhlalutya i-antenna ye-Figure 1, makhe sijonge imodeli yesiphaluka.I-waveguide ngokwayo isebenza njengomgca wothumelo, kwaye iindawo zokubeka kwi-waveguide zinokujongwa njenge-parallel (parallel) yokuvuma.I-waveguide ijikeleze ixesha elifutshane, ngoko ke imodeli yesekethe esondeleyo iboniswe kuMzobo 1:
umfanekiso 2. Imodeli yesekethe ye eriyali slotted waveguide.
Indawo yokugqibela kumgama "d" ukuya esiphelweni (okufutshane-circuited, njengoko kubonisiwe kuMfanekiso 2), kunye nezixhobo slot zibekwe umgama "L" omnye komnye.
Ubungakanani be-groove buya kunika isikhokelo kwi-wavelength.Isalathiso sobude ngamaza bubude obungaphakathi kwesikhokelo samaza.Isikhokelo sobude bobude ( ) ngumsebenzi wobubanzi be-wavelength ("a") kunye nesithuba esikhululekileyo sobude bendawo.Kwimowudi ye-TE01 ebalaseleyo, umkhombandlela wamaza ngamaza ngala:
Umgama phakathi kwendawo yokugqibela kunye nesiphelo "d" udla ngokukhethwa ukuba ube yikota ubude.Imeko yethiyori yomgca wothumelo, umgca we-quarter-wavelength we-short-circuit impedance ugqithiselwe ezantsi yisekethe evulekileyo.Ke ngoko, uMzobo 2 wehlisela ku:
umfanekiso 3. Slotted waveguide imodeli yesekethe usebenzisa ikota-wavelength utshintsho.
Ukuba iparameter "L" ikhethiwe ukuba ibesisiqingatha sobude bobude, ngoko ke igalelo ž ohmic impedance ijongwa kumgama wesiqingatha sobude z ohms."L" sisizathu sokuba uyilo lube malunga nesiqingatha sobude bobude.Ukuba i-antenna ye-waveguide slot iyilwe ngolu hlobo, ke zonke iindawo zokubeka zinokuqwalaselwa ngokuhambelana.Ke ngoko, ukungeniswa kwegalelo kunye nokuphazamiseka kwegalelo le "N" yento elayitiweyo uluhlu lunokubalwa ngokukhawuleza ngolu hlobo:
Igalelo le-impedance ye-waveguide ngumsebenzi we-slot impedance.
Nceda uqaphele ukuba iiparamitha zoyilo zingentla zisebenza kuphela kwifrikhwensi enye.Njengoko i-frequency iqhubeka ukusuka apho uyilo lwe-waveguide lusebenza, kuya kubakho ukuthotywa ekusebenzeni kwe-eriyali.Njengomzekelo wokucinga malunga neempawu zokuphindaphinda kwe-waveguide slotted, imilinganiselo yesampulu njengomsebenzi wokuphindaphinda iya kuboniswa kwi-S11.I-waveguide yenzelwe ukusebenza kwi-10 GHz.Oku kondliwa kwi-coaxial feed ezantsi, njengoko kubonisiwe kuMfanekiso 4.
Umzobo 4. I-eriyali ye-waveguide slotted ityiswa yi-coaxial feed.
Isiphumo sesicwangciso se-S-parameter siboniswe ngezantsi.
QAPHELA: I-eriyali inokwehla okukhulu kakhulu kwi-S11 malunga ne-10 GHz.Oku kubonisa ukuba uninzi losetyenziso lwamandla lusasazwa kobu buxhakaxhaka.I-antenna bandwidth (ukuba ichazwa njenge-S11 ingaphantsi kwe-6 dB) isuka malunga ne-9.7 GHz ukuya kwi-10.5 GHz, inika i-bandwidth ye-8%.Qaphela ukuba kukho kwakhona i-resonance malunga ne-6.7 kunye ne-9.2 GHz.Ngaphantsi kwe-6.5 GHz, ngaphantsi kwe-cutoff waveguide frequency kwaye phantse akukho mandla asasazwayo.Isicwangciso se-S-parameter eboniswe ngasentla inika umbono olungileyo wokuba yeyiphi i-bandwidth slotted waveguide frequency features ifana nayo.
Ipateni yemitha yemitha emithathu ye-waveguide slotted iboniswe ngezantsi (oku kubalwe kusetyenziswa iphakheji yombane yombane yamanani ebizwa ngokuba yi-FEKO).Inzuzo yale eriyali imalunga ne-17 dB.
Qaphela ukuba kwinqwelomoya ye-XZ (i-H-plane), i-beamidth incinci kakhulu (i-2-5 degrees).Kwinqwelomoya ye-YZ (okanye i-E-plane), i-beamidth inkulu kakhulu.
Slotted Waveguide Antenna uthotho lwentshayelelo yemveliso:
RM-SWA910-22,9-10GHz
Ixesha lokuposa: Jan-05-2024
