Hoto na 1 yana nuna zane na gama-gari mai ramin ramuka, wanda ke da tsari mai tsayi da kunkuntar tsarin jagora tare da ramin a tsakiya.Ana iya amfani da wannan ramin don watsa igiyoyin lantarki.
adadi.
Ana ciyar da eriya ta gaba (Y = 0 buɗe fuska a cikin jirgin xz).Ƙarshen nisa yawanci gajeriyar kewayawa ce (ƙarfe ta ƙarfe).Jagorar igiyar igiyar ruwa na iya jin daɗi ta ɗan gajeren dipole (wanda aka gani a bayan eriyar ramin rami) akan shafin, ko kuma ta wani jagorar kaɗa.
Don fara nazarin eriya ta Hoto 1, bari mu kalli ƙirar kewaye.Waveguide kanta yana aiki azaman layin watsawa, kuma ramukan da ke cikin jagorar za a iya kallon su azaman shigar da aka yi daidai da (daidaitacce).Jagorar igiyar igiyar igiyar ruwa gajere ce, don haka ana nuna ƙirar da'irar kusan a cikin Hoto 1:
adadi 2. Tsarin kewayawa na eriyar raƙuman raƙuman ruwa.
Ramin na ƙarshe shine nisa "d" zuwa ƙarshe (wanda ke da gajeriyar kewayawa, kamar yadda aka nuna a hoto na 2), kuma abubuwan ramin suna nisa "L" daga juna.
Girman tsagi zai ba da jagora zuwa tsayin raƙuman ruwa.Jagorar igiyar igiyar ruwa ita ce tsayin igiyar igiyar ruwa.Tsawon zangon jagora ( ) aiki ne na nisa na jagorar igiyar ruwa ("a") da kuma tsawon zangon sarari kyauta.Don mafi girman yanayin TE01, tsawon madaidaicin jagora sune:
Ana zaɓin tazara tsakanin ramin ƙarshe da ƙarshen "d" don zama tsawon zangon kwata.Halin ka'ida na layin watsawa, layin gajeriyar zangon zangon kwata da aka watsa zuwa ƙasa bude kewayawa ne.Saboda haka, Hoto 2 ya rage zuwa:
image 3. Slotted waveguide model kewaye ta amfani da kwata-kwata canji.
Idan an zaɓi siga "L" don zama rabin zango, sa'an nan shigarwar ž ohmic impedance ana duba shi a rabin nisa na nisa z ohms."L" shine dalili na zane ya zama kusan rabin tsayin raƙuman ruwa.Idan an ƙera eriyar ramin waveguide ta wannan hanyar, to duk ramummukan ana iya ɗaukar su a layi daya.Don haka, shigar da shigar da shigar da shigar da keɓancewa na “N” element slotted array ana iya ƙididdige shi da sauri kamar:
Matsalolin shigarwa na waveguide aiki ne na impedance slot.
Lura cewa sigogin ƙira na sama suna aiki ne kawai a mitoci ɗaya.Yayin da mitar ke fitowa daga can ƙirar waveguide ke aiki, za a sami lalacewa a cikin aikin eriya.A matsayin misali na tunani game da halayen mitar jagorar igiyar ruwa, za a nuna ma'aunin samfurin azaman aikin mitar a cikin S11.An ƙera waveguide don aiki a 10 GHz.Ana ciyar da wannan zuwa abincin coaxial a ƙasa, kamar yadda aka nuna a hoto na 4.
Hoto 4. Ana ciyar da eriyar ramin ramuka ta hanyar ciyarwar coaxial.
An nuna sakamakon S-parameter a ƙasa.
NOTE: Eriya tana da babban juzu'i akan S11 a kusan 10 GHz.Wannan yana nuna cewa mafi yawan amfani da wutar lantarki yana haskakawa a wannan mita.bandwidth na eriya (idan an ayyana shi azaman S11 bai kai -6 dB) yana tafiya daga kusan 9.7 GHz zuwa 10.5 GHz, yana ba da bandwidth na juzu'i na 8%.Lura cewa akwai kuma resonance a kusa da 6.7 da 9.2 GHz.A ƙasa da 6.5 GHz, ƙasa da mitar jagororin yankewa kuma kusan babu kuzari da ke haskakawa.Ma'auni na S-parameter da aka nuna a sama yana ba da kyakkyawan ra'ayi na menene halayen mitar raƙuman raƙuman raƙuman raƙuman raƙuman raƙuman raƙuman ruwa suka yi kama da.
Ana nuna ƙirar radiyo mai girma uku na jagorar raƙuman raƙuman ruwa a ƙasa (an ƙididdige wannan ta amfani da fakitin lantarki na lamba da ake kira FEKO).Ribar wannan eriya kusan 17 dB ne.
Lura cewa a cikin jirgin XZ (H-jirgin sama), nisa na katako yana da kunkuntar (digiri 2-5).A cikin jirgin YZ (ko E-jirgin sama), nisa na katako ya fi girma.
Gabatarwar jerin samfuran Antenna Waveguide:
Lokacin aikawa: Janairu-05-2024
