Room-Temperature Low-Noise Amplifier With 11-K Average Noise From 0.6 to 2 GHz

被引：0
|
作者：
Shi, Jun [1 ]
Weinreb, Sander [2 ]
机构：
[1] Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China
[2] CALTECH, Pasadena, CA 91125 USA
来源：
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS | 2023年 / 33卷 / 11期
关键词：
High sensitivity; low-noise amplifier (LNA); noise temperature; radio astronomy; receiving system; wide band;
D O I：
10.1109/LMWT.2023.3315269
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this letter, a low-noise amplifier (LNA) with 11-K average noise in the frequency range from 0.6 to 2 GHz at +25(degrees)C is designed, manufactured, and measured. The input matching network (IMN) of the amplifier is realized by a stepped high-impedance suspended substrate line structure that achieves input reflection coefficients lower than -10 dB over the whole frequency range. The LNA has an integrated temperature-stable noise calibration source for the system noise measurement. Furthermore, when the operating temperature drops to -40 degrees C, the average noise of the LNA will decrease to 7.5 K. The LNA achieves good noise without the need for high-cost cryogenics, which will greatly reduce the cost of high-performance receiving systems for wide-band applications at low microwave frequencies.
引用
收藏
页码：1540 / 1543
页数：4
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