Kugawa kwa mzere wozungulira wa dzanja lamanja (RHCP) ndi kugawa kwa mzere wozungulira wa dzanja lamanzere (LHCP)Fotokozani njira yomwe vector yamagetsi imazungulira pamene mafunde amagetsi akufalikira. Kuzindikira kolondola ndikofunikira mu maulalo a satellite, radar, muyeso wa antenna ndi machitidwe ena a RF chifukwa ma antenna otumizira ndi kulandira ayenera kugwiritsa ntchito polarization yogwirizana kuti akwaniritse kusamutsa mphamvu moyenera.
Bukuli likufotokoza njira yowonera, lamulo lothandiza la dzanja, ubale wa gawo la field-component, axial ratio ndi zofunikira zazikulu zowunikira posankha antenna yozungulira yokhala ndi polarized.
Zitsanzo za Antena ya Horn ya RF MISO Yozungulira
RF MISO imapereka mitundu ya ma antenna a nyanga yozungulira yokhala ndi ma antenna osankhidwa. Zitsanzo zotsatirazi zikuwonetsa njira zosiyanasiyana zosinthira ma frequency; nthawi zonse tsimikizirani momwe ma handed alili, axial ratio, gain, interface ndi mechanical data mu datasheet ya model yomwe ilipo musanasankhe.
RM-CPHA82124-20| Antena ya nyanga yozungulira ya 8.2–12.4 GHz
RM-CPHA1840-12Antena ya nyanga yozungulira ya 18–40 GHz
RM-CPHA218-16| Antena ya nyanga yozungulira ya 2–18 GHz
Onani gulu lonse: Ma antenna a nyanga ya RF MISO yozungulira polarization, kuphatikizapo RHCP, LHCP ndi njira ziwiri zozungulira-polarization malinga ndi chitsanzo.
Kodi Circular Polarization N'chiyani?
Polarization imafotokoza njira yomwe imatsatiridwa ndi vector yamagetsi pamalo okhazikika mumlengalenga. Mu polarization yolunjika, vector imakhalabe pamzere wowongoka. Mu polarization yozungulira yoyenera, kukula kwake kumakhala kosasintha pomwe vector imazungulira madigiri 360 panthawi iliyonse ya RF. Ma antenna othandiza nthawi zambiri amapanga njira yozungulira pang'ono, kotero kuzungulira kumayesedwa ndichiŵerengero cha axialMafunde abwino ozungulira okhala ndi polarized ali ndi 0 dB axial ratio; axial ratio yocheperako yoyezedwa imasonyeza polarization pafupi ndi bwalo.
Kuzungulira kwa polarization kumatha kupangidwa ndi zigawo ziwiri za orthogonal linear field zomwe zili ndi amplitude yofanana ndi kusiyana kwa gawo la plus kapena minus madigiri 90. Chizindikiro cha ubale wa gawo la quadrature chimatsimikizira ngati mafunde ndi RHCP kapena LHCP motsatira malamulo omwe atchulidwa.
RHCP vs LHCP: Tchulani Msonkhano Wowonera
Kugwirana ndi dzanja kungawoneke ngati kwasintha pamene gawo lomwelo lozungulira likuwoneka kuchokera mbali zosiyana. Kuti mupewe kusamveka bwino, nthawi zonse tchulani njira yowonera. Malinga ndi mwambo wa IEEE womwe umagwiritsidwa ntchito kwambiri, kugwirana ndi dzanja kumatanthauzidwa poyang'anamotsatira njira yofalitsira mafunde, kuchokera ku gwero kupita komwe ulendo ukupita.
Njira yothandiza ndiyo kuloza chala chanu chaching'ono mbali yofalikira. Ngati kuzungulira kwa magetsi kukutsatira kupindika kwa zala padzanja lanu lamanja, mafunde ndi RHCP pansi pa njira iyi; ngati akutsatira kupindika kwa dzanja lamanzere, ndi LHCP. Chifukwa zikalata ndi maphunziro ena amagwiritsa ntchito njira yosiyana yowonera, tsimikizirani njirayo mu datasheet ya antenna ndi njira yoyesera musanayerekeze zotsatira.
Zigawo za Munda ndi Ubale wa Gawo
Taganizirani zigawo ziwiri za mafunde a ndege zomwe zikuyenda motsatira z-axis. Gawo limodzi la magetsi limayendetsedwa motsatira x ndi amplitude Ex; chachiwiri chimayang'aniridwa pamodzi ndi y ndi amplitude EyChiwerengero chawo cha vekitala chimatsimikizira momwe polarization imachitikira.
Ngati pali gawo limodzi lokha, mafunde amagawidwa molunjika motsatira mzere umenewo. Pamene zigawo zonse ziwiri zilipo, kuchuluka kwawo ndi gawo lawo zimatsimikiza ngati zotsatira zake ndi zozungulira, zozungulira kapena zozungulira.
Ubale wa m'munda ukhoza kufotokozedwa mwachidule motere:
- Ngati Exndi nonzero ndipo Eyndi zero, polarization ndi yolunjika motsatira x.
- Ngati Eyndi nonzero ndipo Exndi zero, polarization ndi yolunjika motsatira y.
- Ngati zigawo zonse ziwiri zili mu gawo, kuchuluka kwa vekitala yawo kumakhalabe kolunjika pa ngodya yokhazikika.
- Ngati zigawozo zili ndi ma amplitude ofanana komanso kusiyana kwa gawo la plus kapena minus madigiri 90, zotsatira zake zimakhala polarization yozungulira yoyenera.
Ngati zigawo za orthogonal sizili zofanana, kapena kusiyana kwa gawo sikuli madigiri 90, gawolo limatsata ellipse osati bwalo. Ichi ndichifukwa chake antenna datasheet iyenera kufotokoza chiŵerengero cha axial pa ma frequency ndipo, ngati kuli koyenera, pa angular coverage yomwe ikufuna. Handedness yokha sifotokoza khalidwe la polarization.
Chifukwa Chake Kugwirizana kwa Polarization Ndikofunikira
Antena yolandira imatulutsa mphamvu yayikulu kwambiri yomwe ilipo pamene polarization yake ikugwirizana ndi mafunde omwe akubwera. Mikhalidwe yosiyana ya polarization yozungulira ndi yofanana, kotero kusagwirizana kwa RHCP/LHCP kungapangitse kutayika kwakukulu kwa polarization. Antena zenizeni zimapereka kukana kwa polarization kocheperako, ndipo magwiridwe antchito oyesedwa amadaliranso ndi axial ratio, alignment, reflections ndi malo ozungulira mayeso.
Kuwunikira kuchokera pamalo oyendetsera magetsi kumasintha momwe ma polarization amaonekera, ndipo ma radomes, zida zolumikizira kapena zomangamanga zapafupi zitha kusokoneza munda. Kuti mutsimikizire modalirika, gwirizanitsani ma antenna onse awiri pa boresight, gwiritsani ntchito njira yodziwika bwino yowunikira ma polarization, yerekezerani mphamvu yolandiridwa ya RHCP ndi ma LHCP configuration, ndikuyesa axial ratio ndi cross-polarization performance kudutsa band yofunikira.
Momwe Mungasankhire Antena ya RHCP kapena LHCP
Musanasankhe antenna yozungulira yokhala ndi polarized horn, fotokozani zofunikira zonse zogwirira ntchito m'malo mosankha ndi ma frequency okha:
- Mafupipafupi:tsimikizirani kufalikira kwa gulu lonse, osati pafupipafupi yapakati yokha.
- Kugawanika kwa ma polarization:fotokozani RHCP, LHCP kapena polarization yozungulira iwiri ndi mgwirizano wa handedness.
- Chiŵerengero cha Axial:onani malire ofunikira pa kuchuluka kwa ma frequency ndi angular coverage.
- Kupeza ndi kupingasa kwa beam:bajeti ya match link, kufunika kwa zinthu, ndi zosowa za mtunda.
- Kufanana kwa Impedance:onaninso VSWR kapena kubweza kutayika pa gulu lonse.
- Mawonekedwe a RF ndi mphamvu:onetsetsani kuti cholumikizira kapena mawonekedwe a waveguide ndi zosowa zoyendetsera mphamvu.
- Kuphatikiza kwa makina:kutsimikizira envelopu, mawonekedwe oyika, mawonekedwe ndi zofunikira pa chilengedwe.
Lankhulani ndi Katswiri wa RF MISO Antenna
RF MISO ndi wopanga ndi wogulitsa ma antenna a RF ndi microwave. Gawani kuchuluka kwa ma frequency omwe mukufuna, kuchuluka kwa ma handle, kuchuluka kwa ma axial ratio, mawonekedwe ndi zoletsa zoyika kuti gulu lathu lithe kuthandiza kupeza mtundu woyenera kapena kukambirana zofunikira pakugwiritsa ntchito.
Onani ma antenna ozungulira a polarization horn|Lumikizanani ndi RF MISO
Nthawi yotumizira: Meyi-21-2024
