HIGH LINEARITY, LOW NOISE, L-BAND CRYOGENIC AMPLIFIER FOR RADIO ASTRONOMICAL RECEIVERS

被引：5

作者：

Liu, Hongfei ^{[1
,2
]}

Jin, Chengjin ^{[1
,2
]}

Cao, Yang ^{[1
,2
]}

Gan, Hengqian ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China

[2] Chinese Acad Sci, Key Lab Radio Astron, Nanjing 21008, Jiangsu, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2017年 / 59卷 / 03期

基金：

中国国家自然科学基金;

关键词：

cryogenic HEMT transistor; low noise amplifier; high linearity; radio astronomy; PARAMETERS;

D O I：

10.1002/mop.30334

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：

This letter presents a novel L-band cryogenically- coolable low noise amplifier applied in radio astronomical receivers. This amplifier can be operated at temperatures of 300K to 4K. Its noise temperature is less than 6K at 20K physics temperature in the frequencies of 1.2 similar to 1.8 GHz. Over 30 dB gain, more than 10 dB input/output return loss and better than +/- 0.75 dB gain flatness are achieved; Especially, this LNA achieves extremely high large signal performance. Its three order intercepts and 1 dB compressed power referred to output is up to 25.5 dBm and 15 dBm, respectively. (C) 2017 Wiley Periodicals, Inc.

引用

页码：500 / 505

页数：6

共 9 条

[1]

[Anonymous], 2001, ATF54143 AG

[2]

[Anonymous], E5071C AG TECHN

[3]

Gallego J.D., 1990, DESIGN PERFORMANCE C

[4] NOISE CHARACTERIZATION OF LINEAR TWOPORTS IN TERMS OF INVARIANT PARAMETERS [J].