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Near-Field Radio Holography of Slant-Axis Terahertz Antennas
Zhang, Xiaoling1,2; Kang, Haoran1,2; Zuo, Yingxi1; Lou, Zheng1; Wang, Yu1,3; Qian, Yuan1
2020-03-01
Source PublicationIEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
ISSN2156-342X
Volume10Issue:2Pages:141-149
Abstract

Near-field radio holography has been successfully applied to the slant-axis terahertz antenna, which features a unique rotational-mechanism. Corrections of residual path length errors and parallax effect caused by the noncoincidence of the aperture center and rotational center of the antenna are analyzed in detail for high precision near-field holographic measurement conducted at very short distances. Particular discussions are also provided about nonuniform sampling and polarization mismatch errors resulted from the beam rotation of the slant-axis mount system. Precise surface measurement and alignment have been demonstrated on a 1.2 m diameter slant-axis antenna, designed as the scaled model of the 5 m Dome A Terahertz Telescope. Experimental results with a root mean square of measurement repeatability better than 2.0 mu m has been obtained.

KeywordApertures Holography Antenna measurements Extraterrestrial measurements Telescopes Transmitting antennas Near-field radio holography radio telescope slant-axis terahertz
DOI10.1109/TTHZ.2019.2958066
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Optics ; Physics
WOS SubjectEngineering, Electrical & Electronic ; Optics ; Physics, Applied
WOS IDWOS:000519702100005
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/36067
Collection中国科学院紫金山天文台
Corresponding AuthorZhang, Xiaoling
Affiliation1.Chinese Acad Sci, Key Lab Radio Astron, Purple Mt Observ, Nanjing 210034, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
3.Shanghai Normal Univ, Shanghai 200234, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xiaoling,Kang, Haoran,Zuo, Yingxi,et al. Near-Field Radio Holography of Slant-Axis Terahertz Antennas[J]. IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY,2020,10(2):141-149.
APA Zhang, Xiaoling,Kang, Haoran,Zuo, Yingxi,Lou, Zheng,Wang, Yu,&Qian, Yuan.(2020).Near-Field Radio Holography of Slant-Axis Terahertz Antennas.IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY,10(2),141-149.
MLA Zhang, Xiaoling,et al."Near-Field Radio Holography of Slant-Axis Terahertz Antennas".IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY 10.2(2020):141-149.
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