Mlongoti wa nyanga wapawiri-polarized nyanga ukhoza kufalitsa ndi kulandira mopingasa polarized ndi vertically polarized polarized mafunde a electromagnetic kwinaku akusunga malo osasinthika, kotero kuti cholakwika chapatuka kwa dongosolo chifukwa cha kusintha kwa mlongoti kuti chikwaniritse zofunikira za kusintha kwa polarization chichotsedwe, ndi kuti ndondomeko yolondola ipitirire. Mlongoti wa nyanga wapawiri-polarized uli ndi ubwino wopindula kwambiri, kuwongolera bwino, kudzipatula kwapadera kwa polarization, mphamvu zambiri, ndi zina zotero, ndipo wakhala akuphunziridwa ndi kugwiritsidwa ntchito kwambiri. Mlongoti wapawiri-polarized amatha kuthandizira polarization, elliptical polarization ndi circular polarization waveforms.
Njira Yogwirira Ntchito:
| Kulandila Mode |
| • Mlongoti ukalandira mafunde opingasa motsatira mzere, doko loyimirira lokha ndi lomwe lingalandire, ndipo doko lopingasa limakhala pawokha.• Mlongoti ukalandira mawonekedwe opingasa opingasa, doko lopingasa lokha lingalandire, ndipo doko loyimirira limakhazikika. akutali. • Pamene mlongoti umalandira mawonekedwe a elliptical kapena circular polarization waveform, madoko oyimirira ndi opingasa amalandira zigawo zowongoka ndi zopingasa za chizindikirocho, motsatira. Kutengera ndi kumanzere kozungulira polarization (LHCP) kapena kumanja kozungulira polarization (RHCP) ya mawonekedwe a waveform, padzakhala 90-degree gawo lagging kapena kupita patsogolo pakati pa madoko. Ngati mawonekedwe a mafundewa apangidwa mozungulira mozungulira, makulitsidwe azizindikiro kuchokera padoko adzakhala chimodzimodzi. Pogwiritsa ntchito cholumikizira choyenera (madigiri 90) chosakanizidwa, gawo loyimirira ndi gawo lopingasa litha kuphatikizidwa kuti libwezeretse mawonekedwe ozungulira kapena ozungulira. |
| Njira yotumizira |
| • Pamene mlongoti udyetsedwa ndi doko loyima, umatumiza mawonekedwe ozungulira a polarization waveform. • Pamene mlongoti wadyetsedwa ndi doko yopingasa, imatumiza yopingasa mzere polarization waveform. • Pamene mlongoti umadyetsedwa ku madoko ofukula ndi opingasa ndi kusiyana kwa gawo la 90-digirii, zizindikiro zofanana za matalikidwe, mawonekedwe a LHCP kapena RHCP amafalitsidwa molingana ndi kutsalira kwa gawo kapena kupita patsogolo pakati pa zizindikiro ziwirizi. Ngati matalikidwe azizindikiro a madoko awiriwa sali ofanana, mawonekedwe a elliptical polarization amafalikira. |
| Transceiving Mode |
| • Pamene mlongoti umagwiritsidwa ntchito mu njira yotumizira ndi kulandira, chifukwa cha kudzipatula pakati pa madoko okwera ndi opingasa, imatha kutumiza ndi kulandira nthawi yomweyo. |
RF MISOimapereka tinyanga ziwiri zokhala ndi polarized, imodzi yotengera mawonekedwe a quad-ridge ndipo inayo yotengera Waveguide Ortho-Mode Transducer (WOMT). Akuwonetsedwa mu Chithunzi 1 ndi Chithunzi 2 motsatana.
Chithunzi 1 Mlongoti wa nyanga zapawiri-polarized quad-ridged
Chithunzi 2 Mlongoti wa nyanga wapawiri-polarized potengera WOMT
Kufanana ndi kusiyana pakati pa ma antenna awiriwa akuwonetsedwa mu Table 1. Kawirikawiri, mlongoti wozikidwa pamapangidwe a quad-ridge akhoza kuphimba bandwidth yogwira ntchito, nthawi zambiri kuposa gulu la octave, monga 1-20GHz ndi 5-50GHz. Ndi luso lapamwamba kwambiri lopangira komanso njira zopangira zolondola kwambiri,RF MISO's ultra-wideband dual-polarized antenna imatha kugwira ntchito pamafunde apamwamba a mafunde a millimeter. Mayendedwe ogwiritsira ntchito a WOMT-based antennas amachepetsedwa ndi kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake kakhoza kukhala bwino. Pakali pano pamsika, tinyanga tambiri tokhala ndi polarized WOMT timakhala ndi 20% yokha ya bandwidth yogwira ntchito ndipo sangathe kuphimba ma frequency band waveguide. The WOMT-based dual-polarized antenna yopangidwa ndiRF MISOimatha kuphimba gulu lonse la ma frequency band, kapena pamwamba pa gulu la octave. Pali zitsanzo zambiri zoti musankhe.
Table 1 Kuyerekeza kwa tinyanga tapawiri-polarized
| Kanthu | Quad-ridge Based | Kuchokera ku WOMT |
| Mtundu wa Antenna | Nyanga Yozungulira kapena Rectangular | Mitundu Yonse |
| Bandwidth yogwiritsira ntchito | Mtundu wa Ultra-wide | Waveguide bandwidth kapena Extended Frequency WG |
| Kupindula | 10 mpaka 20dBi | Zosankha, mpaka 50dBi |
| Mbali za Lobe Levels | 10 mpaka 20 dB | Pansi, mtundu wa mlongoti umadalira |
| Bandwidth | Zosiyanasiyana mkati mwa Operating bandwidth | Wokhazikika mu gulu lonse |
| Cross polarization kudzipatula | 30dB Chitsanzo | Pamwamba, 40dB Choyimira |
| Kupatula padoko kupita kudoko | 30dB Chitsanzo | Pamwamba, 40dB Choyimira |
| Mtundu wa Port | Coaxial | Coaxial kapena waveguide |
| Mphamvu | Zochepa | Wapamwamba |
Mlongoti wa quad-ridge dual-polarized horn antenna ndiyoyenera kugwiritsidwa ntchito komwe miyeso imadutsa ma frequency angapo a waveguide, ndipo ili ndi maubwino a Ultra-wideband komanso kuyesa mwachangu. Kwa tinyanga tapawiri tokhala ndi polarized kutengera WOMT, mutha kusankha mitundu yosiyanasiyana ya tinyanga, monga nyanga ya conical, nyanga ya piramidi, kafukufuku wotseguka, nyanga ya lens, nyanga ya scalar, nyanga yamalata, nyanga yamalata, mlongoti wa Gaussian, mlongoti wa mbale, ndi zina. Mitundu yosiyanasiyana ya tinyanga yoyenera kugwiritsa ntchito pulogalamu iliyonse imatha kupezeka.RF MISOikhoza kupereka gawo lozungulira ku rectangular waveguide transition module kuti akhazikitse kulumikizana kwachindunji pakati pa mlongoti wokhala ndi mawonekedwe ozungulira ozungulira ndi WOMT yokhala ndi mawonekedwe a square waveguide. The WOMT-based dual-polarization horn antennas kutiRF MISOzomwe zingapereke zikuwonetsedwa mu Table 2.
Table 2 Mlongoti wapawiri-polarized kutengera WOMT
| Mitundu ya mlongoti wapawiri-polarized | Mawonekedwe | Zitsanzo |
| WOMT +Standard Horn | •Kupereka bandwidth yokhazikika ya waveguide ndi Extended Frequency WG bandwidth •Maulendo ofikira mpaka 220 GHz •Malobe am'mbali otsika • Zosankha zopindula za 10, 15, 20, 25 dBi |
|
| WOMT+Corrugated Feed Horn | •Kupereka bandwidth yokhazikika ya waveguide ndi Extended Frequency WG bandwidth •Maulendo ofikira mpaka 220 GHz •Malobe am'mbali otsika • Low cross polarization kudzipatula • Pezani ma 10 dBi |  |
Kuti mudziwe zambiri za antennas, chonde pitani:
Nthawi yotumiza: Sep-13-2024
