Chokulitsa phokoso chochepa chimagwiritsidwa ntchito ngati chowongolera chapamwamba kwambiri kapena chapakati pamitundu yosiyanasiyana yolandila mawayilesi, komanso mabwalo okulitsa pazida zodziwira zamagetsi zowoneka bwino kwambiri. Mukakulitsa zizindikiro zofooka, phokoso lopangidwa ndi amplifier likhoza kusokoneza kwambiri chizindikiro. Chifukwa chake, tikuyembekeza kuchepetsa phokosoli kuti liwongolere chiŵerengero cha chizindikiro ndi phokoso la zotuluka. Kuwonongeka kwa chiŵerengero cha chizindikiro-ku-phokoso chifukwa cha amplifier nthawi zambiri kumawonetsedwa ndi phokoso la F.
Ma amplifiers otsika phokosondi gawo lofunikira la dera lolandila, lomwe limayendetsa ndikusintha chizindikiro cholandilidwa kukhala chidziwitso. Ma LNA amayenera kukhala pafupi ndi chipangizo cholandirira kuti achepetse kusokoneza. Amangopereka phokoso laling'ono (zopanda ntchito) ku siginecha yolandilidwa popeza china chilichonse chidzasokoneza kwambiri chizindikiro chomwe chafooka kale. LNA imagwiritsidwa ntchito pamene chiŵerengero cha signal-to-noise (SNR) chili chokwera ndipo chiyenera kuchepetsedwa ndi pafupifupi 50% pamene mphamvu ikuwonjezeka. Chigawo choyamba cha wolandira kulandira chizindikiro ndi LNA, kupangitsa kuti ikhale chigawo chofunikira kwambiri panjira yolumikizirana.
Ntchito za amplifier otsika phokoso
LNA idakumana ndikukula koyambirira kwa ma amplifiers amadzimadzi a helium-ozizira komanso ma parametric amplifiers achipinda. Ndi chitukuko chofulumira chaukadaulo, chasinthidwa ndi ma microwave field-effect transistor amplifiers m'zaka zaposachedwa. Mtundu uwu wa amplifier uli ndi makhalidwe abwino kwambiri ang'onoang'ono, otsika mtengo, komanso opepuka. Makamaka potengera mawonekedwe a ma radio frequency, ili ndi mawonekedwe aphokoso lotsika, gulu lalikulu la ma frequency, komanso kupindula kwakukulu. Zakhala zikugwiritsidwa ntchito kwambiri mu C, Ku, Kv, ndi magulu ena afupipafupi. Ndipo kutentha kwaphokoso kwa ma amplifiers omwe amagwiritsidwa ntchito kawirikawiri amatha kukhala otsika kuposa 45K.
TheLow Noise amplifier (LNA)imapangidwira makamaka kuti ikhale yogwiritsira ntchito masiteshoni ogwiritsira ntchito mafoni, monga makhadi olankhulana opanda zingwe a transceiver, ma amplifiers okhala ndi tower-mounted (TMA), ophatikiza, obwerezabwereza, ndi zida zomaliza zakutali / digito zopanda zingwe. Chiwerengero chochepa cha phokoso (NF, Noise Figure) chakhazikitsa ndondomeko yatsopano. Pakalipano, makampani opanga mauthenga opanda zingwe akukumana ndi vuto lopereka mawonekedwe abwino kwambiri a siginecha ndi kufalikira kwa anthu ambiri. Receiver sensitivity ndi chimodzi mwazinthu zofunika kwambiri pakupanga njira yolandirira station station. Kusankhidwa koyenera kwa LNA, makamaka Level LNA yoyamba kumatha kusintha kwambiri magwiridwe antchito a olandila ma station station, ndipo index yotsika yaphokoso ndi cholinga chachikulu chopangira.
Ngati muli ndi zosowa zaLNA, welcome to enquiry: sales@cdjx-mw.com.
Nthawi yotumiza: Jun-13-2023
