AN UNTUNED CAVITY AS A HIGH EFFECTIVE TEMPERATURE MILLIMETER-WAVE CALIBRATION SOURCE

被引：1

作者：

WHIBBERLEY, PB ^{[1
]}

QUINCEY, PG ^{[1
]}

BIRCH, JR ^{[1
]}

BARTLETT, DV ^{[1
]}

机构：

[1] JET JOINT UNDERTAKING, ABINGDON OX14 3EA, OXON, ENGLAND

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1992年 / 3卷 / 09期

关键词：

D O I：

10.1088/0957-0233/3/9/011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An untuned cavity has been developed and characterized as a microwave source of high effective radiometric temperature. This source is intended for use in the calibration of the Fabry-Perot millimetre wave spectrometers in use on the Joint European Torus (JET). Radiation input to the cavity is provided by backward wave oscillators operating between 100 and 170 GHz at a typical bandwidth of 0.5 GHz. The cavity is shown to give an isotropic output which simulates that from a black body source observed with a bandwidth smaller than the resolution of the spectrometer.

引用

页码：864 / 872

页数：9

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