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有源微波冷噪声源的原理及其应用分析
Alternative TitleAnalysis of Active Microwave Cold Noise Source: Principles,and Applications
王振占; 董帅; 殷晓斌; 陆浩; 李彬
Department微波遥感部
Source Publication遥感技术与应用
2017
Volume32Issue:2Pages:247-254
ISSN1004-0323
Language中文
Keyword有源微波冷噪声源 微波辐射计定标 低温噪声测量
Abstract有源微波冷噪声源是一种新型微波噪声源部件,其以场效应管作为核心噪声发生元件,能够在常温环境下输出极低的噪声温度,是为微波辐射计提供低温定标参考点的理想装置。在介绍国内外有源微波冷噪声源技术发展现状和特点的基础上,分析了有源微波冷噪声源的工作原理和关键技术。提出了一种有源微波冷噪声源设计方法,重点分析了设计过程中的关键环节对噪声源性能产生的影响。采用pHEMT型场效应管研制了L波段有源微波冷噪声源器件,并给出了有源微波冷噪声源作为微波辐射计噪声源的应用方案。
Other AbstractA new type of microwave noise source is introduced,which is called active cold noise source.Noise wave theory is used to predict the microwave noise temperature that exits port one of a two-port active device when port two is terminated with a matched load of known temperature.This noise temperature is of interest when characterizing and designing field-effect transistor(FET)- based cold noise sources.A design procedure capable of achieving a minimum noise temperature at a specific bias point is described.An active cold noise source using pHEMT has been realized at L-band for radiometer calibration.The application of active cold noise source is discussed,and an instance that using active cold noise source as radiometer calibration reference standard is presented.
Indexed ByCSCD
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6006
Collection微波遥感部
Recommended Citation
GB/T 7714
王振占,董帅,殷晓斌,等. 有源微波冷噪声源的原理及其应用分析[J]. 遥感技术与应用,2017,32(2):247-254.
APA 王振占,董帅,殷晓斌,陆浩,&李彬.(2017).有源微波冷噪声源的原理及其应用分析.遥感技术与应用,32(2),247-254.
MLA 王振占,et al."有源微波冷噪声源的原理及其应用分析".遥感技术与应用 32.2(2017):247-254.
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