Domin daidaitawa da buƙatun kusurwar eriya na sabon samfurin da kuma raba ƙirar takardar PCB ta ƙarni na baya, ana iya amfani da tsarin eriya mai zuwa don cimma karuwar eriya ta 14dBi@77GHz da aikin radiation na 3dB_E/H_Beamwidth=40°. Ta amfani da farantin Rogers 4830, kauri 0.127mm, Dk=3.25, Df=0.0033.
Tsarin eriya
A cikin hoton da ke sama, an yi amfani da eriya ta grid ta microstrip. Eriya ta grid ta microstrip wani nau'in eriya ne da aka samar ta hanyar amfani da abubuwan da ke haskakawa da layukan watsawa da aka samar ta hanyar zoben microstrip na N. Tana da tsari mai ƙanƙanta, babban riba, ciyarwa mai sauƙi da sauƙin ƙerawa da sauran fa'idodi. Babban hanyar polarization ita ce linear polarization, wanda yayi kama da na gargajiya na microstrip kuma ana iya sarrafa shi ta hanyar fasahar etching. Impedance na grid, wurin ciyarwa, da tsarin haɗin kai tare suna ƙayyade rarrabawar yanzu a cikin jeri, kuma halayen radiation sun dogara ne akan yanayin grid ɗin. Ana amfani da girman grid guda ɗaya don tantance mitar tsakiya na eriya.
Kayayyakin jerin eriya na RVMISO:
RM-PA7087-43
RM-PA1075145-32
RM-SWA910-22
RM-PA10145-30
Nazarin ƙa'ida
Wutar lantarki da ke gudana a tsaye a cikin ɓangaren jerin yana da daidai girman da kuma juyawar alkibla, kuma ƙarfin radiation yana da rauni, wanda ba shi da tasiri sosai akan aikin eriya. Saita faɗin tantanin halitta l1 zuwa rabin tsawon rai kuma daidaita tsayin tantanin halitta (h) don cimma bambancin lokaci na 180° tsakanin a0 da b0. Don radiation mai faɗi, bambancin lokaci tsakanin maki a1 da b1 shine 0°.
Tsarin abubuwan jeri
Tsarin ciyarwa
Eriya irin ta grid yawanci suna amfani da tsarin ciyarwa mai coaxial, kuma mai ciyarwa yana da alaƙa da bayan PCB, don haka ana buƙatar tsara mai ciyarwa ta hanyar yadudduka. Don ainihin sarrafawa, za a sami wani kuskuren daidaito, wanda zai shafi aiki. Domin biyan bayanan mataki da aka bayyana a cikin hoton da ke sama, ana iya amfani da tsarin ciyarwa mai bambanci na planar, tare da daidai girman motsawa a tashoshin biyu, amma bambancin mataki na 180°.
Tsarin ciyarwar coaxial[1]
Yawancin eriya ta hanyar grid mai layi-layi suna amfani da ciyarwar coaxial. Matsayin ciyarwa na eriya mai layi-layi galibi an raba shi zuwa nau'i biyu: ciyarwa ta tsakiya (ma'aunin ciyarwa 1) da ciyarwa ta gefen (ma'aunin ciyarwa 2 da ma'aunin ciyarwa 3).
Tsarin jeri na grid na yau da kullun
A lokacin ciyar da gefen, akwai raƙuman ruwa masu tafiya da ke ratsa dukkan grid ɗin a kan eriyar tsarar grid, wacce ba ta da amsawa ta hanya ɗaya ta ƙarshe. Ana iya amfani da eriyar tsarar grid a matsayin eriya mai tafiya da kuma eriya mai amsawa. Zaɓin mitar da ta dace, wurin ciyarwa, da girman grid yana ba grid damar aiki a yanayi daban-daban: raƙuman ruwa masu tafiya (shafa mita) da kuma resonance (fitar da gefen). A matsayin eriya mai tafiya, eriya mai tsarar grid tana ɗaukar nau'in ciyarwa mai cin gefen, tare da ɗan gajeren gefen grid ɗin ya fi girma fiye da kashi ɗaya bisa uku na tsawon tsayin da aka shirya da kuma dogon gefen tsakanin sau biyu zuwa uku na tsawon gefen gajere. Ana aika wutar lantarki a gefen gajere zuwa ɗayan gefen, kuma akwai bambancin mataki tsakanin gajerun gefen. Eriya mai tsarar grid (mara amsawa) suna haskaka hasken da aka karkata wanda ya karkace daga alkiblar da aka saba amfani da ita ta jirgin grid. Alkiblar hasken yana canzawa tare da mita kuma ana iya amfani da shi don duba mita. Lokacin da aka yi amfani da eriya ta jerin grid a matsayin eriya mai amsawa, an tsara dogayen da gajerun gefen grid ɗin su zama tsawon rai ɗaya mai isar da sako da rabin tsawon rai mai isar da sako na mitar tsakiya, kuma an karɓi hanyar ciyarwa ta tsakiya. Saukar iskar lantarki ta nan take ta eriya ta grid a cikin yanayin amsawa tana nuna rarrabawar raƙuman ruwa. Yawancin ɓangarorin gajerun ne ke samar da hasken, tare da dogayen gefen suna aiki azaman layukan watsawa. Eriya ta grid tana samun ingantaccen tasirin radiation, matsakaicin hasken yana cikin yanayin radiation mai faɗi, kuma rarrabuwar ra'ayi yana daidai da gajeren gefen grid ɗin. Lokacin da mitar ta karkace daga mitar tsakiya da aka tsara, gajeren gefen grid ɗin ba ya zama rabin tsawon rai mai jagora ba, kuma rabuwar haske yana faruwa a cikin tsarin radiation. [2]
Tsarin Array da tsarin 3D ɗinsa
Kamar yadda aka nuna a cikin hoton da ke sama na tsarin eriya, inda P1 da P2 suke 180° daga matakin, ana iya amfani da ADS don kwaikwayon tsari (ba a yi masa tsari a cikin wannan labarin ba). Ta hanyar ciyar da tashar ciyarwa ta bambanta, ana iya lura da rarrabawar yanzu akan wani abu guda ɗaya na grid, kamar yadda aka nuna a cikin nazarin ka'ida. Wutar da ke cikin matsayi na tsayi suna cikin kwatancen akasin haka (sokewa), kuma kwararar da ke cikin matsayi na juyawa suna da daidai girman da kuma a mataki (superposition).
Rarrabawa ta yanzu akan makamai daban-daban1
Rarrabawa ta yanzu akan makamai daban-daban 2
Abin da ke sama ya ba da ɗan gajeren bayani game da eriyar grid, kuma ya tsara wani tsari ta amfani da tsarin ciyarwar microstrip wanda ke aiki a 77GHz. A zahiri, bisa ga buƙatun gano radar, ana iya rage ko ƙara lambobin tsaye da na kwance na grid ɗin don cimma ƙirar eriya a wani takamaiman kusurwa. Bugu da ƙari, ana iya canza tsawon layin watsawa na microstrip a cikin hanyar sadarwar ciyarwar daban-daban don cimma bambancin matakin da ya dace.
Lokacin Saƙo: Janairu-24-2024
