Mea hoʻonui leo haʻahaʻa (LNA), alapine 9K~1GHz, loaʻa 30dB, kiʻi walaʻau (NF) 2dB

ʻO ka haʻahaʻa haʻahaʻa haʻahaʻa he mea koʻikoʻi i nā ʻōnaehana RF/microwave, i hoʻohana nui ʻia e hoʻonui i nā hōʻailona nāwaliwali ʻoiai e hōʻemi ana i ka walaʻau hou. ʻO kāna mau hana nui a me nā hiʻohiʻona noiʻi penei:

Nā hana kumu:

1. Hoʻonui hōʻailona
E hoʻonui i ka amplitude o nā hōʻailona nāwaliwali i loaʻa e nā antennas a i ʻole nā ​​seni e hōʻoia i ka hoʻokō pono ʻana e nā kaapuni hope e like me nā mixers a me nā ADC.
2. Kāohi walaʻau
Ma ka hoʻolālā ʻana i ka hoʻolālā a me ka hoʻohana ʻana i nā mea haʻahaʻa haʻahaʻa, ua hoʻomalu ʻia ke kiʻi noise i hoʻokomo ʻia (NF) i loko o ka laulā o 0.5-3dB (ideal amplifier NF = 0dB).

Nā hiʻohiʻona noiʻi:

1. Pūnaehana Radar
Ma ka radar pūʻali koa (e like me ka radar hoʻomalu ahi i ka lewa) a me ka radar kīwila (e like me ka radar nalu millimeter automotive), hoʻohana ʻia ʻo LNA e hoʻonui i ka hōʻailona echo nāwaliwali (hōʻailona-a-noise ratio SNR <0dB) i hōʻike ʻia e ka pahu hopu. Ke hele nei i kahi loulou hoʻonui me NF <2dB, hiki i ka radar ke ʻike i nā pahuhopu me ka RCS ʻoi aku a haʻahaʻa paha (radar cross section).
2. Pūnaehana kelepona ʻole
ʻO ka mea hoʻonui haʻahaʻa haʻahaʻa ka mea nui o nā kahua kahua 5G/6G, nā kamaʻilio ukali, a me ka pahu kelepona loaʻa nā loulou. ʻO ia ke kuleana no ka hoʻonui haʻahaʻa haʻahaʻa (NF <1.5dB) o nā hōʻailona RF nāwaliwali (e like me ka haʻahaʻa -120dBm) i hopu ʻia e ka antenna ma mua o ka demodulation hōʻailona, ​​e hoʻomaikaʻi nui i ka ʻike ʻana o ka ʻōnaehana. No ka laʻana, i loko o ka pahu alapine hawewe millimeter (24 - 100GHz), hiki i ka LNA ke uku i ka 20dB o ka poho o ke ala, e hōʻoiaʻiʻo ana i ka paʻa o ka hoʻouna ʻikepili kiʻekiʻe.
3. Kiekie precision ho'āʻo mea
Ma nā polokalamu e like me nā spectrum analyzers a me vector network analyzers (VNA), hoʻoholo pololei ʻo LNA i ka hana leo o ka mea kani a me ke ʻano ikaika. Hiki i ka LNA ke hoʻomaikaʻi i ka naʻau o ka mea kani ma ka hoʻonui ʻana i ka hōʻailona nV i ana ʻia i ka laulā quantization kūpono o ADC (e like me 1Vpp). I kēia manawa, hiki i ka helu haʻahaʻa haʻahaʻa haʻahaʻa (NF <3dB) ke hōʻemi pono i ka maopopo ʻole o ke ana ʻana a hōʻemi i nā hewa ana.
4. E hoʻonui i nā wahi noi
Lekiō astronomy: Ke hilinaʻi nei ka telescope FAST i ka LNA i hoʻoluʻu ʻia i ka helium wai (NF ≈ 0.1dB) e hopu i nā laina kikoʻī 21cm i ke ao holoʻokoʻa.
Ka helu helu helu: ʻO ka hoʻonui ʻana i nā hōʻailona pae μV (4 - 8GHz) o nā qubits superconducting e koi kokoke ana i ka hana leo leo palena quantum.
ʻO ke kiʻi lāʻau lapaʻau: Hoʻonui nā lako MRI i nā hōʻailona nuclear magnetic resonance level μV ma o ka LNA non-magnetic, me ka hoʻomaikaʻi ʻana i ka lākiō hōʻailona-i-noise ma mua o 10dB.

Hāʻawi ʻo Qualwave Inc. i nā mea hoʻonui haʻahaʻa haʻahaʻa mai 9kHz a i 260GHz, me kahi kiʻi leo haʻahaʻa e like me 0.8dB.
ʻO ke kumu hoʻohālike QLA-9K-1000-30-20, i hoʻolālā kūikawā ʻia no ka noiʻi ʻepekema a me nā noi kamaʻilio, loaʻa i kahi kaulike hana maikaʻi loa o 30dB loaʻa a me 2dB noise kiʻi i ka 9kHz~1GHz frequency band.