Whakakaha haruru iti (LNA), auau 9K~1GHz, whakanui 30dB, tatauranga haruru (NF) 2dB

He wāhanga matua te whakakaha haruru iti i roto i ngā pūnaha RF/ngaruiti, e whakamahia ana hei whakakaha i ngā tohu ngoikore me te whakaiti i te haruru tāpiri. Ko ōna mahi matua me ngā āhuatanga tono koia ēnei:

Ngā Mahi Matua:

1. Whakarei ake i te tohu
Whakarei ake i te kaha o ngā tohu ngoikore e whiwhihia ana e ngā pūihi, e ngā pūoko rānei, kia pai ai te tukatuka e ngā ara iahiko e whai ake nei, pērā i ngā whakaranu me ngā ADC.
2. Te pehi haruru
Mā te arotau i te hoahoa me te whakamahi i ngā rauemi iti-haruru, ka whakahaerehia te ahua haruru whakauru-ake (NF) i roto i te awhe o te 0.5-3dB (te whakakaha pai NF = 0dB).

Ngā horopaki tono:

1. Pūnaha radar
I roto i te radar hōia (pērā i te radar whakahaere ahi rererangi) me te radar ā-iwi (pērā i te radar ngaru mirimita motuka), ka whakamahia te LNA hei whakanui i te tohu pāorooro ngoikore (ōwehenga tohu-ki-haruru SNR < 0dB) e whakaatahia ana e te ūnga. Ina haere ana i roto i te hononga whakanui me te NF < 2dB, ka taea e te radar te kite i ngā ūnga me te RCS tawhiti atu, iti iho rānei (te wāhanga whakawhiti radar).
2. Pūnaha whakawhitiwhiti kōrero ahokore
Ko te whakakaha haruru iti te wāhanga matua o ngā teihana turanga 5G/6G, ngā whakawhitiwhitinga amiorangi, me ngā hononga whiwhi waea pūkoro. Koia te kawenga mō te whakakaha haruru iti (NF < 1.5dB) o ngā tohu RF ngoikore (tae atu ki te -120dBm) i hopukina e te pūihi i mua i te tangohanga tohu, ka whakapai ake i te aro o te pūnaha ki te whiwhi. Hei tauira, i roto i te roopu auau ngaru mirimita (24 - 100GHz), ka taea e te LNA te whakakapi i te ngaronga ara tae atu ki te 20dB, ka whakarite i te pumau o te tuku raraunga tere-tiketike.
3. Taputapu whakamātautau tino tika
I roto i ngā taputapu pēnei i ngā tātaritanga whānuitanga me ngā tātaritanga whatunga whārite (VNA), ka whakatau tika te LNA i te mahi haruru me te whānuitanga hihiri o te taputapu. Ka taea e te LNA te whakapai ake i te aro o te taputapu mā te whakanui ake i te tohu ine taumata nV ki te whānuitanga inenga whai hua o te ADC (pēnei i te 1Vpp). I taua wā, ka taea e te tauwehenga haruru tino iti (NF < 3dB) te whakaiti i te koretake o te ine me te whakaiti i ngā hapa ine.
4. Whakawhanui ake i ngā rohe tono
Tātaritanga whetū reo irirangi: Ka whakawhirinaki te karu tiro FAST ki te LNA wai-whakamatao heriuma (NF ≈ 0.1dB) hei hopu i ngā rārangi whetū 21cm i roto i te ao whānui.
Rorohiko matūriki: Ko te whakanui ake i ngā tohu taumata μV (4 - 8GHz) o ngā qubit superconducting me whai mahi haruru tata ki te rohe matūriki.
Whakaahua hauora: Ka whakarei ake ngā taputapu MRI i ngā tohu aukume karihi taumata μV mā te LNA kore-aukume, me te whakapainga o te ōwehenga tohu-ki-haruru neke atu i te 10dB.

E whakarato ana a Qualwave Inc. i ngā whakakaha oro iti-haruru mai i te 9kHz ki te 260GHz, me te iti o te haruru tae noa ki te 0.8dB.
Ko te tauira QLA-9K-1000-30-20, he mea hanga motuhake mō ngā rangahau pūtaiao me ngā tono whakawhitiwhiti kōrero, e tutuki ana i te taurite mahi tino pai o te whakanui 30dB me te ahua haruru 2dB i te roopu auau 9kHz~1GHz.