AAntena Yozungulirandi chitsanzo chabwino cha antenna ya waya, yodziwika ndi kapangidwe kake kozungulira. Ndi antenna ya broadband yoyenera ma VHF ndi UHF bands.
Antena yozungulira imagwira ntchito pa ma frequency a pafupifupi 30 MHz mpaka 3 GHz, makamaka kuphimba ma VHF ndi UHF bands.
Mfundo Zomangamanga ndi Kugwira Ntchito kwa Spiral Antenna
Antena Yozungulira imapangidwa mwa kupotoza kondakitala kukhala mawonekedwe ozungulira ndikuilumikiza ku ndege yapansi kudzera mu mzere wolumikizira. Ndi kapangidwe kosavuta, imapanga mafunde ozungulira mozungulira ndipo imagwiritsidwa ntchito kwambiri polumikizirana ndi anthu akunja monga machitidwe otumizirana ma satellite.
Chithunzi chomwe chili pamwambapa chikuwonetsa dongosolo la Spiral Antenna lomwe limagwiritsidwa ntchito polumikizirana ndi satellite. Ma antenna otere nthawi zambiri amafunikira malo okwanira oikira panja.
Antena Yozungulira imakhala ndi waya wokhuthala wamkuwa kapena chubu chopangidwa ngati helix, chomwe chimagwira ntchito limodzi ndi pulani yachitsulo yosalala. Malekezero amodzi a helix amalumikizidwa ndi kondakitala wapakati wa chingwe cha coaxial, pomwe kondakitala wakunja amalumikizidwa ndi pulani yapansi.
Chithunzi pamwambapa chikuwonetsa kapangidwe ka Spiral Antenna, ndi mawonekedwe atsatanetsatane a zigawo zake.
Makhalidwe a kuwala kwa Antena Yozungulira amatsimikiziridwa makamaka ndi m'mimba mwake wa helix, mtunda pakati pa kutembenuka (pitch), ndi ngodya ya pitch.
Ngodya ya pitch imafotokozedwa ngati ngodya pakati pa tangent ku helix ndi ndege yofanana ndi helix axis, ndipo imaperekedwa ndi:
Kumene:
•D ndi m'mimba mwake wa helix
•S ndi mtunda (kutalika pakati pa ma turn oyandikana)
•α ndi ngodya ya pitch
Njira Yogwirira Ntchito
Ma Antenna Ozungulira amagwira ntchito m'njira ziwiri zazikulu:
•Njira Yachizolowezi (yomwe imadziwikanso kuti njira ya perpendicular radiation)
•Axial Mode (yomwe imadziwikanso kuti end-fire mode kapena beam radiation mode)
Njira iliyonse yafotokozedwa mwatsatanetsatane pansipa.
Mu njira yachibadwa ya radiation, munda wowala umakhala wolunjika ku helix axis, ndipo mafunde owala amakhala ozungulira. Njirayi imachitika pamene miyeso ya helix ndi yaying'ono poyerekeza ndi kutalika kwa mafunde. Pankhaniyi, mawonekedwe a radiation a helical antenna angaganizidwe ngati kuphatikiza kwa antenna yaifupi ya dipole ndi antenna yozungulira.
Chithunzi pamwambapa chikuwonetsa mawonekedwe a radiation a Spiral Antenna yomwe ikugwira ntchito mwanjira yanthawi zonse.
Njira iyi imatsimikiziridwa ndi mtunda wa helix D ndi mtunda pakati pa ma turn S. Zoyipa za njira iyi yogwirira ntchito zikuphatikizapo kugwiritsa ntchito mphamvu zochepa za radiation komanso bandwidth yopapatiza; chifukwa chake, imagwiritsidwa ntchito kawirikawiri pakugwiritsa ntchito.
Njira Yozungulira
Mu njira ya radiation ya axial, malo ojambulidwa amaonetsa makhalidwe a end-fire motsatira helix axis, ndipo mafunde ojambulidwa amakhala ozungulira kapena ozungulira mozungulira. Njira imeneyi imachitika pamene circumference ya helix yawonjezeka kufika pa wavelength imodzi (λ) ndipo mtunda pakati pa ma turns ndi pafupifupi λ/4. Pansi pa mikhalidwe iyi, mawonekedwe a radiation ndi otakata motsatira axis ndi makhalidwe olunjika, ndipo ma lobes am'mbali amawonekera pa ngodya zosiyana ndi axis.
Chithunzi pamwambapa chikuwonetsa mawonekedwe a radiation a Spiral Antenna yomwe imagwira ntchito mu axial mode.
Pamene antenna yapangidwira mafunde ozungulira ozungulira (RHCP) a dzanja lamanja, sidzalandira mafunde ozungulira ozungulira ozungulira (LHCP) a dzanja lamanzere, ndipo mosemphanitsa. Njira yogwiritsira ntchito iyi ndi yosavuta kuyigwiritsa ntchito ndipo imagwiritsidwa ntchito kwambiri pa ntchito zothandiza.
Ubwino waukulu wa Spiral Antenna ndi awa:
• Kapangidwe kosavuta komanso kosavuta kupanga
• Kuwongolera kwakukulu
• Bandwidth yotakata
• Yokhoza kuzunguliza polarization
• Yoyenera magulu a HF ndi VHF
Ntchito zazikulu za Spiral Antenna ndi izi:
• Ma antenna amodzi ozungulira kapena ma arrays awo amagwiritsidwa ntchito potumiza ndi kulandira ma signal a VHF
• Amagwiritsidwa ntchito kwambiri mu njira zolumikizirana za satelayiti ndi zofufuzira zakuya m'mlengalenga
• Imagwiritsidwa ntchito polumikizana ndi telemetry pakati pa zida zankhondo za ballistic, ma satellite, ndi malo ochitira zinthu zapadziko lapansi.
• Amagwiritsidwa ntchito kukhazikitsa kulumikizana pakati pa Mwezi ndi Dziko Lapansi
• Komanso imagwira ntchito yofunika kwambiri pa ntchito za sayansi ya zakuthambo pa wailesi
RFmisoAntena Yozungulira — yankho lanu lodalirika la polarization yozungulira ya wideband.
RM-PSA0756-3L
RM-PSA0756-3R
RM-PSA1840-5
RM-PSA218-2R
RM-PSA218-V2
Kuti mudziwe zambiri zokhudza ma antenna, chonde pitani ku:
Nthawi yotumizira: Marichi-26-2026
