NAOC Open IR
Ultra-low noise L-band cryogenic astronomical receiver for the FAST telescope
Liu, Hong-Fei1,2; He, Chuan3; Wang, Jin4; Jiang, Peng1,2; Wang, Sheng-Wang3; Wu, Yang4; Zhang, Hang1,2; Song, Jin-You1,2; Shi, Xiang-Wei1,2; Guo, Ming-Lei1,2
2021-08-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:7Pages:12
AbstractThis paper presents an ultra-low noise L-band radio astronomical cryogenic receiver for the Five-hundred-meter Aperture Spherical radio Telescope (FAST) telescope. The development of key low noise microwave parts of coupling low noise amplifier (Coupling-LNA) and conical quad-ridge orthogonal mode transducers (OMT) and reasonable system integration achieve outstanding performance of receiver. It covers the frequency range of 1.2 GHz to 1.8 GHz. Novel cryogenic Coupling-LNAs with low noise, large return loss, high dynamic range and the function of coupling calibration signals are developed for the proposed receiver. Amplification and coupling function circuits are integrated as a single Coupling-LNA with full noise temperature of 4 K at the physical temperature of 15 K. Its return loss is more than 18 dB, and output 1 dB compression power is +5 dBm. A cryogenic dewar is fabricated to provide 55 K and 15 K cryogenic environment for OMT and Coupling-LNAs, respectively. The receiver's system noise temperature is below 9 K referred to feed aperture plane. Benefiting from optimal design and precise mechanical treatment, good scattering performance of OMT and equalized radiation patterns of horn are achieved with an antenna efficiency above 75%.
Keywordtelescopes analytical observational
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1088/1674-4527/21/7/182
WOS KeywordRADIO TELESCOPE
Language英语
Funding ProjectNational Key R&D Program of China[2018YFE0202900] ; National Natural Science Foundation of China[U1831110]
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000691270300001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75278
Collection中国科学院国家天文台
Corresponding AuthorLiu, Hong-Fei
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing 100101, Peoples R China
3.China Elect Technol Grp Corp, Res Inst 16, Hefei 230043, Peoples R China
4.China Elect Technol Grp Corp, Res Inst 54, Shijiazhuang 050081, Hebei, Peoples R China
Recommended Citation
GB/T 7714
Liu, Hong-Fei,He, Chuan,Wang, Jin,et al. Ultra-low noise L-band cryogenic astronomical receiver for the FAST telescope[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(7):12.
APA Liu, Hong-Fei.,He, Chuan.,Wang, Jin.,Jiang, Peng.,Wang, Sheng-Wang.,...&Guo, Ming-Lei.(2021).Ultra-low noise L-band cryogenic astronomical receiver for the FAST telescope.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(7),12.
MLA Liu, Hong-Fei,et al."Ultra-low noise L-band cryogenic astronomical receiver for the FAST telescope".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.7(2021):12.
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