A LOW-NOISE PELTIER-COOLED FET AMPLIFIER

被引：0
|
作者：
ASKEW, RE
WOLKSTEIN, HJ
机构：
来源：
RCA REVIEW | 1981年 / 42卷 / 04期
关键词：
D O I：
暂无
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：
Present ultralow-noise receivers in satellite-communications earth terminals use complex parametric amplifiers that are extremely sensitive to input rf drive level and pumping-frequency stability. This paper describes a development program that has demonstrated the feasibility of replacing this high-cost, complex parametric amplifier with a Peltier-cooled, GaAs FET amplifier that provides an effective noise temperature of less than 160 K (1. 9 db) over the 7. 25 to 7. 75 GHz band.
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页码：661 / 671
页数：11
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