Isandisi-lizwi esisezantsi (LNA), i-frequency 9K ~ 1GHz, ukufumana i-30dB, isibalo sengxolo (NF) 2dB

Isandisi-lizwi esisezantsi licandelo eliphambili kwiinkqubo zeRF/microwave, ezisetyenziswa ikakhulu ukukhulisa iimpawu ezibuthathaka ngelixa kucuthwa ingxolo eyongezelelweyo. Imisebenzi yayo ephambili kunye neemeko zokusetyenziswa zimi ngolu hlobo lulandelayo:

Imisebenzi enguNdoqo:

1. Ukwandiswa komqondiso
Ukuphucula i-amplitude yezibonakaliso ezibuthathaka ezifunyenwe yi-eriyali okanye i-sensors ukuqinisekisa ukucubungula okusebenzayo ngamasekethe alandelayo afana nabaxube kunye nee-ADCs.
2. Ukunciphisa ingxolo
Ngokulungisa uyilo kunye nokusetyenziswa kwezinto eziphantsi kwengxolo, i-self-duced noise figure (NF) ilawulwa ngaphakathi koluhlu lwe-0.5-3dB (i-amplifier efanelekileyo NF = 0dB).

Iimeko zesicelo:

1. Inkqubo yerada
Kwi-radar yomkhosi (njenge-radar yokulawula umlilo womoya) kunye ne-radar yoluntu (efana ne-automotive millimeter wave radar), i-LNA isetyenziselwa ukukhulisa umqondiso we-echo obuthathaka (umlinganiselo we-signal-to-noise ratio SNR <0dB) ebonakaliswa yithagethi. Xa udlula kwikhonkco yokukhulisa nge-NF <2dB, i-radar inokubona iithagethi kunye ne-RCS ekude okanye ephantsi (icandelo le-radar cross).
2. Inkqubo yonxibelelwano engenazingcingo
Isandisi-lizwi esisezantsi siyinxalenye ephambili yezikhululo ezisisiseko ze-5G/6G, unxibelelwano ngesathelayithi, kunye netheminali ephathwayo efumana amakhonkco. Inoxanduva lokukhulisa ingxolo ephantsi (NF < 1.5dB) yeempawu zeRF ezibuthathaka (ezingaphantsi njenge -120dBm) ezithinjwe yi-eriyali ngaphambi kokuthotywa komqondiso, ukuphucula ngokubonakalayo uvakalelo lwenkqubo. Umzekelo, kwi-millimeter wave frequency band (24 - 100GHz), i-LNA inokubuyekeza ukuya kuthi ga kwi-20dB yokulahleka kwendlela, iqinisekisa ukuzinza kokuhanjiswa kwedatha ngesantya esiphezulu.
3. Isixhobo sokuvavanya ukuchaneka okuphezulu
Kwizixhobo ezifana ne-spectrum analyzers kunye ne-vector network analyzers (VNA), i-LNA inquma ngokuthe ngqo ukusebenza kwesixhobo kunye noluhlu oluguquguqukayo. I-LNA inokuphucula ubuntununtunu besixhobo ngokukhulisa isignali elinganisiweyo yenqanaba le-nV kuluhlu olusebenzayo lwe-ADC (njenge-1Vpp). Okwangoku, i-coefficient yengxolo ye-ultra-low (NF <3dB) inokunciphisa ngokufanelekileyo ukungaqiniseki komlinganiselo kunye nokunciphisa iimpazamo zokulinganisa.
4. Yandisa iindawo zezicelo
I-astronomy yerediyo: Iteleskopu ye-FAST ixhomekeke kulwelo lwe-helium epholileyo i-LNA (NF ≈ 0.1dB) ukuze ibambe i-21cm yemigca yokubona kwindalo iphela.
Icomputing ye-Quantum: Ukukhulisa imiqondiso yenqanaba le-μV (4 - 8GHz) ye-superconducting qubits ifuna kufutshane nomsebenzi wengxolo we-quantum.
Imifanekiso yezonyango: Isixhobo se-MRI songeza inqanaba le-μV lemiqondiso yemagnethi yenyukliya nge-LNA engeyiyo eyemagnetic, ngophuculo lophawu ukuya kwingxolo olungaphezulu kwe-10dB.

I-Qualwave Inc. ibonelela ngeeamplifiers ezinengxolo ephantsi ukusuka kwi-9kHz ukuya kwi-260GHz, kunye nenani lengxolo elisezantsi njenge-0.8dB.
Imodeli ye-QLA-9K-1000-30-20, eyenzelwe ngokukodwa uphando lwezenzululwazi kunye nezicelo zonxibelelwano, ifezekisa ibhalansi egqwesileyo yokusebenza kwe-30dB yenzuzo kunye ne-2dB yengxolo yomfanekiso kwi-9kHz ~ 1GHz band frequency.