Noise Temperature Measurement System of Normal and High Temperature Load Method

doi:10.1088/1742-6596/1237/3/032072

CORC > 新疆天文台 > 研究单元未命名 > 射电天文研究室 > 微波接收机技术实验室

	Noise Temperature Measurement System of Normal and High Temperature Load Method
	Xiang,B B1,2 ; Yan,H1,2 ; Ma,J1,2 ; Li,X F1,2 ; Chen,M Z1,2 ; Wang,Y1,2 ; Wang,K1,2
刊名	Journal of Physics: Conference Series
	2019-06-01
卷号	1237 期号:3
ISSN号	1742-6588
DOI	10.1088/1742-6596/1237/3/032072
英文摘要	Abstract Microwave receiver is a special equipment used to receive radio signals in radio telescope. The noise temperature of receiver is an important target to test sensitivity. The lower the noise temperature is, the higher the sensitivity is. Therefore, the measurement of noise temperature is very important. The classical cold and ambient load method can measure noise temperature well, but it can not be carried out during observation. In addition, the performance of microwave devices is not unchanged, and noise temperature will vary with the ambient temperature and test equipment, so real-time measurement of noise temperature is important. We set up a noise temperature measurement system based on normal and high temperature load method. Through this system, noise temperature can be calculated by measuring the radiation power and temperature of blackbody at normal temperature and after heating to 150°C. Compared with results of the cold and ambient load method, the maximum test error is 12.3% in five tests, and the other test errors are less than 10%. The results can confirm that the normal and high temperature load method could be hopeful to satisfy the normal test requirements of centimeter-band normal temperature receiver.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:1742-6588-1237-3-032072
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/2817]
专题	微波接收机技术实验室新疆天文台_射电天文研究室
作者单位	1.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing, Jiangsu, China 2.Xinjiang Astronomical observatory, Chinese Academy of Sciences, Urumqi, Xinjiang, China
推荐引用方式 GB/T 7714	Xiang,B B,Yan,H,Ma,J,et al. Noise Temperature Measurement System of Normal and High Temperature Load Method[J]. Journal of Physics: Conference Series,2019,1237(3).
APA	Xiang,B B.,Yan,H.,Ma,J.,Li,X F.,Chen,M Z.,...&Wang,K.(2019).Noise Temperature Measurement System of Normal and High Temperature Load Method.Journal of Physics: Conference Series,1237(3).
MLA	Xiang,B B,et al."Noise Temperature Measurement System of Normal and High Temperature Load Method".Journal of Physics: Conference Series 1237.3(2019).