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

页码：1540 / 1543

页数：4

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