A RADIOMETER FOR MEASUREMENT OF NOISE TEMPERATURE OF LOW-NOISE MICROWAVE AMPLIFIERS

被引：0

作者：

CARTER, JW

DAGLISH, HN

MOORE, P

机构：

[1] G.E.C.-A.E.I. Electronics Ltd., Stanmore, Middlesex

[2] P.O. Research Department, Dollis Hill, London

来源：

RADIO AND ELECTRONIC ENGINEER | 1969年 / 37卷 / 06期

关键词：

D O I：

10.1049/ree.1969.0064

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：

The noise temperature of a low-noise microwave amplifier can be measured by connecting the amplifier input in turn to thermal noise sources at different physical temperatures. The conventional technique is limited by the necessity for a very stable amplifier and system gain during the measurements. The paper describes a manually-balanced radiometer circuit designed to overcome this limitation, and intended to measure amplifier noise temperatures in the range below 500°K. Examples of experimental measurements on a maser and on uncooled and cooled parametric amplifiers are discussed. © 1969, The Institution of Electronic and Radio Engineers. All rights reserved.

引用

页码：365 / +

页数：1

共 8 条

[1]

BEDROSIAN E, 1960, IRE T MICROWAVE THEO, VMTT8, P463

[2]

CARTER JW, 1969, PHYSICAL ASPECTS NOI, P44

[3] COOLED TERMINATIONS FOR USE AS 4GC/S MICROWAVE STANDARD NOISE SOURCES [J].

DAGLISH, HN ;

CARTER, JW .

PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON, 1965, 112 (04) :705-&

[4]

DAGLISH HN, 1968, LOW NOISE MICROWAVE, P76

[5] REFRIGERATED MICROWAVE NOISE SOURCES [J].

EISELE, KM .

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 1964, IM13 (04) :336-&

[6]

VOGELMAN JH, 1953, ELECTRONICS, V26, P196

[7]

WATSON PA, 1969, PHYSICAL ASPECTS NOI

[8]

1960, P I RADIO ENGRS, V48, P61

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