Mu 2020, mogwirizana ndi Huawei ku China, tidzakhala nawo pantchito yomanga malo ambiri opanda zingwe a mafoni, omwe tidzapereka ma microstrip power dividers okhala ndi ma frequency a 0.5/6g ndi 1-50g ngati zida zothandizira.
Kuchuluka kwa zida zapaintaneti zopanda zingwe kudzachitika mu 2021, ndipo chiwerengero chonse chikuyembekezeka kupitirira zikwi makumi a zida.
Ma band a pafupipafupi oyenera kulumikizana ndi satellite
Nthawi: 2021-10-28
ITU imatanthauzira ma frequency band, omwe amagwiritsidwa ntchito polumikizirana ndi satellite.
UHF (Ultra High Frequency) kapena gulu la mafunde a decimeter, ma frequency osiyanasiyana ndi 300MHz-3GHz.
Bande la ma frequency ili likugwirizana ndi ma frequency a IEEE UHF (300MHz-1GHz), L (1-2GHz), ndi S (2-4GHz).
Mafunde a wailesi a UHF frequency band ali pafupi ndi kufalikira kwa mzere wowonekera, otsekedwa mosavuta ndi mapiri ndi nyumba, ndi zina zotero, ndipo kuchepa kwa ma transmission mkati kumakhala kwakukulu.
SHF (Super High Frequency) kapena gulu la mafunde a centimeter, ma frequency osiyanasiyana ndi 3-30GHz.
Bande la ma frequency ili likufanana ndi ma IEEE S (2-4GHz), C (4-8GHz), Ku (12-18GHz), K (18-27GHz) ndi Ka (26.5-40GHz).
Mafunde a decimeter ali ndi kutalika kwa 1cm-1dm, ndipo makhalidwe awo ofalikira ali pafupi ndi mafunde owala.
EHF (Extremely High Frequency) kapena millimeter wave frequency band, kuchuluka kwa ma frequency ndi 30-300GHz.
Bandi yama frequency iyi ikugwirizana ndi ma IEEE's Ka (26.5-40GHz), V (40-75GHz) ndi ma frequency ena.
Mayiko otukuka ayamba kukonzekera kugwiritsa ntchito ma frequency band a 50/40GHz Q/V pazipata za ntchito ya satellite yokhazikika (HDFSS) pamene zinthu za Ka-band zikuchepa.
Tikhozanso kusintha zinthu za rf passive malinga ndi zomwe mukufuna. Mutha kulowa patsamba losinthira kuti mupereke zofunikira zomwe mukufuna.
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Emali:
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tom@keenlion.com
Nthawi yotumizira: Novembala-18-2021
