Antena ya nyanga yokhala ndi polarized two-polarized horn imatha kutumiza ndikulandira mafunde amagetsi okhala ndi polarized horizontal ndi vertically polarized uku ikusunga mawonekedwe a malo osasinthika, kotero kuti cholakwika cha kusintha kwa malo a dongosolo chomwe chimayambitsidwa ndi kusintha malo a antenna kuti akwaniritse zofunikira za polarization switching chichotsedwe, komanso kuti kulondola kwa dongosolo kukwaniritsidwe bwino. Antena ya nyanga yokhala ndi polarized two-polarized ili ndi ubwino wa high gain, good directionivity, high polarization isolation, high power capacity, etc., ndipo yaphunziridwa kwambiri ndikugwiritsidwa ntchito. Antena yokhala ndi polarized two-polarized imatha kuthandizira linear polarization, elliptical polarization ndi circular polarization waveforms.
Njira Yogwirira Ntchito:
| Njira Yolandirira |
| • Pamene antenna ilandira mawonekedwe olunjika ozungulira, doko lolunjika lokha ndi lomwe lingathe kulilandira, ndipo doko lolunjika limachotsedwa. • Pamene antenna ilandira mawonekedwe olunjika ozungulira, doko lolunjika lokha ndi lomwe lingathe kulilandira, ndipo doko lolunjika limachotsedwa. • Pamene antenna ilandira mawonekedwe a elliptical kapena circular polarization waveform, ma vertical and horizontal ports amalandira zigawo zoyima ndi zopingasa za chizindikirocho, motsatana. Kutengera ndi circular polarization ya kumanzere (LHCP) kapena circular polarization ya kumanja (RHCP) ya mafunde, padzakhala kuchedwa kwa madigiri 90 kapena kupita patsogolo pakati pa madoko. Ngati mafunde ali ozungulira bwino, kukula kwa chizindikiro kuchokera ku doko kudzakhala kofanana. Pogwiritsa ntchito cholumikizira choyenera (90 digiri) cha hybrid, gawo loyima ndi gawo lopingasa zitha kuphatikizidwa kuti zibwezeretse mawonekedwe ozungulira kapena ozungulira. |
| Njira Yotumizira |
| • Pamene antenna ikuperekedwa ndi doko loyima, imatumiza mawonekedwe a polarization waveform yoyima. • Pamene antenna ikuperekedwa ndi doko lopingasa, imatumiza mawonekedwe a mafunde a polarization a mzere wopingasa. • Pamene antenna imaperekedwa ku madoko oyima ndi opingasa ndi kusiyana kwa magawo 90, zizindikiro zofanana za amplitude, mawonekedwe a mafunde a LHCP kapena RHCP amatumizidwa malinga ndi gawo lomwe likutsalira kapena kupita patsogolo pakati pa zizindikiro ziwirizi. Ngati amplitude ya chizindikiro cha madoko awiriwa si yofanana, mawonekedwe a elliptical polarization amatumizidwa. |
| Njira Yotumizira |
| • Pamene antenna ikugwiritsidwa ntchito mu njira yotumizira ndi kulandira, chifukwa cha kulekanitsidwa pakati pa madoko oyima ndi opingasa, imatha kutumiza ndi kulandira nthawi imodzi. |
RF MISOimapereka mndandanda wa ma antenna awiri okhala ndi polarized, imodzi yozikidwa pa kapangidwe ka quad-ridge ndi inayo yozikidwa pa Waveguide Ortho-Mode Transducer (WOMT). Akuwonetsedwa mu Chithunzi 1 ndi Chithunzi 2 motsatana.
Chithunzi 1 Antena ya nyanga ya quad-ridged yokhala ndi ma polarized awiri
Chithunzi 2 Antena ya nyanga ziwiri yokhala ndi polarized kutengera WOMT
Kufanana ndi kusiyana pakati pa ma antenna awiriwa kwawonetsedwa mu Gome 1. Kawirikawiri, antenna yochokera ku kapangidwe ka quad-ridge imatha kuphimba bandwidth yogwira ntchito, nthawi zambiri kuposa octave band, monga 1-20GHz ndi 5-50GHz. Ndi luso lapamwamba kwambiri lopanga komanso njira zogwirira ntchito molondola kwambiri,RF MISOAntena ya ultra-wideband dual-polarized imatha kugwira ntchito mpaka ma frequency apamwamba a ma millimeter wave. Bandwidth yogwira ntchito ya ma antenna ochokera ku WOMT imachepetsedwa ndi bandwidth yogwira ntchito ya waveguide, koma gain yake, beam width, side lobes ndi cross polarization/port-to-port isolation zingakhale bwino. Pakadali pano pamsika, ma antenna ambiri okhala ndi dual-polarized ozikidwa pa WOMT ali ndi 20% yokha ya bandwidth yogwira ntchito ndipo sangathe kuphimba standard waveguide frequency band. Antena ya WOMT yokhala ndi dual-polarized yozikidwa pa WOMT yopangidwa ndiRF MISOikhoza kuphimba gulu lonse la mafunde, kapena kudzera pa gulu la octave. Pali mitundu yambiri yoti musankhe.
Gome 1 Kuyerekeza kwa ma antenna okhala ndi polarized awiri
| Chinthu | Kutengera pa Quad-ridge | Ochokera ku WOMT |
| Mtundu wa Antena | Nyanga Yozungulira Kapena Yozungulira | Mitundu Yonse |
| Bandwidth Yogwira Ntchito | Bande Lotambalala Kwambiri | Bandwidth ya Waveguide kapena Extended Frequency WG |
| Phindu | 10 mpaka 20dBi | Zosankha, mpaka 50dBi |
| Magawo a Lobe Yam'mbali | 10 mpaka 20dB | Chotsika, chodalira mtundu wa antenna |
| Bandwidth | Kuchuluka kwa ntchito mkati mwa bandwidth | Yokhazikika kwambiri mu gulu lonse |
| Kupatukana kwa mtanda | 30dB Yachizolowezi | Wapamwamba, 40dB Wamba |
| Kupatula doko kupita ku doko | 30dB Yachizolowezi | Wapamwamba, 40dB Wamba |
| Mtundu wa Doko | Coaxial | Coaxial kapena waveguide |
| Mphamvu | Zochepa | Pamwamba |
Antena ya nyanga ya quad-ridge dual-polarized horn ndi yoyenera kugwiritsidwa ntchito pomwe miyeso yake imadutsa ma waveguide frequency bands angapo, ndipo ili ndi ubwino wa ultra-wideband komanso kuyesa mwachangu. Pa ma antenna a dual-polarized kutengera WOMT, mutha kusankha mitundu yosiyanasiyana ya ma antenna, monga conical horn, pyramid horn, open ended waveguide probe, lens horn, scalar horn, corrugated horn, corrugated feed horn, Gaussian antenna, dish antenna, ndi zina zotero. Ma antenna osiyanasiyana oyenera kugwiritsa ntchito dongosolo lililonse angapezeke.RF MISOingapereke gawo losinthira la mafunde ozungulira kuchokera ku rectangular kuti likhazikitse kulumikizana mwachindunji pakati pa antenna yokhala ndi mawonekedwe ozungulira a mafunde ndi WOMT yokhala ndi mawonekedwe ozungulira a mafunde. Ma antenna a nyanga ziwiri za WOMT omwe ali ndi polarization horn omweRF MISOzomwe zingaperekedwe zikuwonetsedwa mu Table 2.
Tebulo 2 Antena yokhala ndi polarized iwiri yochokera pa WOMT
| Mitundu ya antenna yokhala ndi ma polarized awiri | Mawonekedwe | Zitsanzo |
| WOMT+Nyanga Yokhazikika | • Kupereka bandwidth yonse ya waveguide yokhazikika komanso bandwidth ya Extended Frequency WG •Mafupipafupi ofikira mpaka 220 GHz • Ma lobes otsika a m'mbali •Mitengo yosankha yowonjezera ya 10, 15, 20, 25 dBi |
|
| WOMT+Corrugated Feed Horn | • Kupereka bandwidth yonse ya waveguide yokhazikika komanso bandwidth ya Extended Frequency WG •Mafupipafupi ofikira mpaka 220 GHz • Ma lobes otsika a m'mbali • Kupatula kwa cross polarization kochepa • Pezani mtengo wa 10 dBi |  |
Kuti mudziwe zambiri zokhudza ma antenna, chonde pitani ku:
Nthawi yotumizira: Sep-13-2024
