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Noise Temperature Measurement System of Normal and High Temperature Load Method
Wang,K1,2; Wang,Y1,2; Chen,M Z1,2; Li,X F1,2; Ma,J1,2; Yan,H1,2; Xiang,B B1,2
2019-06-01
Source PublicationJournal of Physics: Conference Series
ISSN1742-6588
Volume1237Issue:3Pages:032072
Contribution Rank1
AbstractAbstract 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.
DOI10.1088/1742-6596/1237/3/032072
Language英语
WOS IDIOP:1742-6588-1237-3-032072
PublisherIOP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/2818
Collection射电天文研究室_微波技术实验室
射电天文研究室
Corresponding AuthorWang,K
Affiliation1.Xinjiang Astronomical observatory, Chinese Academy of Sciences, Urumqi, Xinjiang, China
2.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing, Jiangsu, China
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang,K,Wang,Y,Chen,M Z,et al. Noise Temperature Measurement System of Normal and High Temperature Load Method[J]. Journal of Physics: Conference Series,2019,1237(3):032072.
APA Wang,K.,Wang,Y.,Chen,M Z.,Li,X F.,Ma,J.,...&Xiang,B B.(2019).Noise Temperature Measurement System of Normal and High Temperature Load Method.Journal of Physics: Conference Series,1237(3),032072.
MLA Wang,K,et al."Noise Temperature Measurement System of Normal and High Temperature Load Method".Journal of Physics: Conference Series 1237.3(2019):032072.
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