Chii chinonzi Rhombic Antenna?
Antena yerhombic iantenna yewaya inotenderera inoumbwa nezvinhu zvina zvinofambisa mashoko zvakarongwa muchimiro chakaita sedhaimani. Inogona kuonekwa semaantenna maviri eV akabatana kumagumo, negumbo rimwe chete rinoshandiswa senzvimbo yekudyisa uye gumbo rakapesana rinowanzo batanidzwa kune resistor inogumisa.
Kusiyana neresonant dipole, antenna yerhombic yakamiswa zvakanaka inoshanda zvakanyanya seantenna inofamba-famba. RF current inofamba kubva panzvimbo yekudyisa ichienda kuzvikamu zvina zvewaya kuenda kumugumo wemutoro. Minda yemagetsi inogadzirwa nezvikamu izvi inobatana kugadzira danda rakabatana padivi pe major axis yerhombus.
Maantenna eRhombic akakurumbira nekutaurirana kweHF kure nekuti anogona kupa ruzivo rwakakura, ruzivo rwekufambisa mberi runobatsira uye hunhu hwakagadzikana hwekutungamira. Zvisinei, kukura kwawo kukuru kunoita kuti akwanise kuiswa panzvimbo dzakatarwa kupfuura mapuratifomu ekukurukurirana akamanikana.
Chimiro Chekutanga
Antena yemazuva ano ine waya ina dzakareba zvakaenzana dzakasungirirwa pamusoro pevhu. Pamwe chete, waya idzi dzinoumba rhombus yakatambanuka ine makona maviri acute uye makona maviri akaomesesa.
Antena inopihwa kune rimwe divi, nepo rimwe divi rakatarisana rakabatana neresistor inogumisa isingainductive. Resistor iyi inosarudzwa kuti ienzanise hunhu hweimpedance yechimiro cheantena uye itore simba rasara rekufamba-famba.
Magadzirirwo makuru ekugadzira anosanganisira:
- Kureba kwechikamu chega chega chewaya
- Kona ye rhombus yakasimba kana yepamusoro
- Kureba kwekuisa pamusoro pevhu
- Kupindirana kwenzvimbo yekudya
- Kugumisa kuramba
- Dhayamita yemutyairi
- Range yema frequency akatarwa uye nzira yekupararira
Kona yepamusoro haisi kukosha kwakatarwa kwese. Inoenderana nehurefu hwemagetsi hwedivi rega rega uye kukwira kwaunoda uye divi re azimuth redanda guru.
Mufananidzo 1. Kurongeka kwekutanga kweantenna ine rhombic yakatwasuka.
Antena yeRhombic Inoshanda Sei?
Rutivi rumwe nerumwe rwe rhombus runoita se radiator ine waya refu. Sezvo magetsi achipararira pamwe chete nema conductors, chikamu chega chega chewaya chinoburitsa chikamu chemwaranzi chinoenda kwachiri.
Kana zviyero zveantenna nemakona zvasarudzwa nemazvo, minda inopenya nemativi mana inosimbisana ichienda mberi. Mune dzimwe nzira, zvimwe zvikamu zvemunda zvinodzima zvishoma. Mugumisiro wakabatanidzwa idanda guru rakatetepa riri padivi refu re rhombus.
Chinodzivirira chinogumira chine basa rakakosha. Nekunwa simba rinosvika kumagumo, chinoderedza kuratidzwa kwesimba uye chinodzivirira mafungu akasimba ekumira kuti asaumbwe pamakondirakita. Izvi zvinobatsira antenna kuchengetedza impedance yakadzikama uye hunhu hwemwaranzi munzvimbo dzakasiyana-siyana.
Chinochinjaniswa ndechekushanda zvakanaka. Chikamu chesimba rekutumira chinoshandurwa kuita kupisa mu resistor inogumisa pane kuti chive ne radiation. Saka dhizaini ye antenna inoda kuenzana pakati pe directionivity, bandwidth, impedance stability uye radiation efficiency.
Range yeFrequency uye Saizi yeMagetsi
Maantenna echinyakare ane saizi yakazara anonyanya kuenderana nekutaurirana kweHF. Pamafrequency aya, mativi eantena anowanzova nemarefu akawanda, zvichibvumira chimiro kuti chibudise divi rakakosha.
Antena ine rhombic haitsanangurwi ne frequency range imwe chete yakatarwa. Zviyero zvayo zvinogona kuenzaniswa zvichienderana nema frequency akasiyana, asi chimiro chacho chinokura zvakanyanya pama frequency akaderera uye chinoda kuti michina ikwanise kushivirira zvakanyanya pama frequency akakwira.
Zvimiro zvecompact rhombic uye rhombic-loop zvinogona kushandiswawo paVHF, UHF kana microwave frequency. Zvisinei, magadzirirwo aya akakura anogona kuva nehunhu hwakasiyana hwekudyisa, polarization uye radiation kubva kune antenna yeHF rhombic yakagumiswa.
Mufananidzo 2. Muenzaniso wechimiro cheantenna ine rhombic compact yekugamuchira mafrequency akakwira.
MaAntenna eRhombic Akagumiswa uye Asina Kupera
Kanyanga ke rhombic kanogumira kanowanzo gadzira patani yemwaranzi inotenderera imwe chete. Mwaranzi yakawanda inobatsira inotungamirwa kubva panzvimbo yekudyisa kuenda kumagumo ekupedzisira.
Kana resistor inogumisa ikabviswa, magetsi anobuda kubva kumagumo akavhurika. Antena yacho inobva yagadzira chikamu chakasimba chewave-standing uye inogona kugadzira patani yemativi maviri, ine mwaranzi huru kumativi maviri akasiyana.
Kugadziriswa kusina kugadzikiswa kunogona kudzivirira kurasikirwa kwesimba mu resistor inogumira, asi kupindira kwayo kwekupinda uye patani yemwaranzi zvinowanzosiyana zvakanyanya zvichienderana nekuwanda. Inogonawo kuratidza chiyero chisina kunaka chepamberi nepashure uye maitiro e broadband asingafungidzike.
Patani yeMwaranzi uye Polarization
Magadzirirwo emwaranzi eantenna ine rhombic terminated anoratidzwa ne forward main lobe uye side lobes dzakawanda. Kutungamira kwemwaranzi chaiyo uye beamwidth zvinoenderana nehurefu hwedivi, rhombus angle, kukwirira kwekuisa, mashandisirwo ekushanda uye mamiriro epasi.
Kuwedzera kureba kwemagetsi kunogona kuvandudza kutungamira, asi kunogonawo kugadzira mamwe maburi emativi. Maburi aya asingadiwe anogona kuburitsa simba kuenda kune mamwe maburi asina kurongeka uye kuderedza mabhenefiti anoshanda edanda guru.
Antena ye rhombic yakaiswa yakatambanuka inonyanya kupatsanurwa yakatambanuka munzira huru yemwaranzi. Zvisinei, patani yakazara yemativi matatu inogonawo kunge iine zvikamu zve polarization yakatwasuka, kunyanya mumativi epadivi uye panzira dziri kure ne axis huru.
Mufananidzo 3. Patani yemwaranzi inoonekwa nedivi rimwe chete yeantenna ine rhombic yakagumiswa.
Kudyisa uye Kufananidza Impedance
Antena ye rhombic inowanzova chimiro chakaenzana chine impedance yakawanda yekupinda. Inowanzopihwa uchishandisa tambo yekutumira yakaenzana kana kuburikidza ne transformer ye impedance yakakodzera uye balun.
Kana tambo ye coaxial ichishandiswa, kuchinja pakati pemutsetse wekudya usina kuenzana neantenna yakaenzana kunofanirwa kugadzirwa nokungwarira. Kusaenderana kwakakwana kunogona kuwedzera simba re reflective, kuunza common-mode current uye kukanganisa pateni yemwaranzi yaitarisirwa.
Mainjiniya anofanira kuongorora:
- Kupindira kwekupinda
- Kurasikirwa kwekudzoka uye VSWR
- Kugumisa kuramba
- Kubudirira mberi
- Chiyero chepamberi nepashure
- Kutungamirirwa kwedanda
- Chikamu chedivi
- Kupatsanurana
- Kugona kubata simba
Kune masisitimu ekutumira ane simba guru, resistor inogumisa inofanira kukwanisa kuburitsa simba guru reRF zvakachengeteka.
Zvakanakira
Zvakanakira zvikuru zve rhombic antenna zvinosanganisira:
- Bandwidth inoshanda yakafara
- Kubatsira kwekutungamira kunobatsira
- Impedance yakagadzikana kana yagumiswa zvakanaka
- Kuvaka kwakavakirwa pawaya kuri nyore
- Yakakodzera maHF links ari kure
- Inokwanisa kubata simba rekutumira rakawanda nezvikamu zvakakodzera
- Maantenna akawanda ane rhombic anogona kurongwa kuti afukidzwe zvakanyanya kana kuchinjana pakati penzira
Miganhu
Zvipingamupinyi zvayo zvikuru zvinosanganisira:
- Inoda nzvimbo yakakura yekuisa
- Inoda zvivakwa zvakawanda zvekutsigira
- Chikamu chesimba reRF chinorasika mu resistor inogumisa
- Inogona kugadzira mativi akakosha
- Kushanda zvakanaka kunokanganiswa nekukwirira nemamiriro evhu
- Kugadzirisa michina kunogona kuoma
- Hazvina kukodzera mapuratifomu akawanda madiki kana emafoni
Maitiro Akajairika
Maantenna eRhombic ave achishandiswa kare ku:
- Kutaurirana kweHF kure
- Malink eredhiyo akagadziridzwa
- Zviteshi zvekugamuchira ma "Shortwave"
- Kutaurirana kweIonospheric uye skywave
- Nhepfenyuro dzekutaurirana dzepasi rose
- Kutarisa redhiyo uye ruzivo rwemasaini
- Tsvagiridzo pamusoro pemaantenna ane waya refu uye mafungu ekufamba
Kunyangwe masisitimu ekutaurirana emazuva ano achiwanzoshandisa ma antenna e log-periodic, broadband arrays, ma antenna e reflector uye masisitimu e antenna anodzorwa nemagetsi, antenna ye rhombic inoramba iri muenzaniso wakakosha mudzidziso ye antenna.
Inoratidza zvakajeka kuti kureba kwemutyairi, simba rekufamba-famba, kona yejometri uye nzvimbo yepamusoro yemunda zvinogona kushandiswa sei kudzora antenna directionivity uye bandwidth.
RF MISO inopa mhinduro dze antenna ne microwave component dzeRF testing, communication, radar, antenna measurement uye system integration. Kunzwisisa classic antenna structures dzakadai se rhombic antenna kunobatsira mainjiniya kuongorora zvakakosha zvinosanganisira frequency range, gain, polarization, beamwidth, VSWR, side-lobe level uye radiation efficiency.
Kuti udzidze zvakawanda nezve antenna, ndapota shanyira:
Nguva yekutumira: Chikunguru-24-2026
