Effect of subreflector displacement induced aberrations for dual-reflector antenna

doi:10.1109/CSQRWC.2019.8799133

	Effect of subreflector displacement induced aberrations for dual-reflector antenna
	Xiang, Binbin 1; Lian, Peiyuan 2; Wang, Wei 2; Xue, Fei 1; Kazezkhan, Guljaina 1; Wang, Kai 1
	2019-08-15
会议日期	July 18, 2019 - July 19, 2019
会议地点	Taiyuan, China
关键词	Antenna reflectors Aberrations Alignment Geometrical optics Reflection
DOI	10.1109/CSQRWC.2019.8799133
页码	8799133
国家	China
英文摘要	The main purpose of this study is to investigate the effect of subreflector displacement for dual-reflector antenna. In this paper, the effect of misalignment of subreflector on path length difference is analyzed. By geometrical optics, the descriptions of path length difference due to the three kinds of subreflector displacements for dual-reflector antenna are re-expressed approximately as the Seidel aberration form. From the expressions it is seen that the path length difference due to axial translation of subreflector has the aberration features of spherical, focus and piston, and the path length difference due to lateral translation of subreflector has the aberration features of tilt and coma, and the path length difference due to rotation of subreflector also has the aberration features of tilt and coma. The effects of aberrations and displacement of subreflector on gain and pointing of a 26 m reflector antenna are analyzed. The results indicate that the effects on electromagnetic performance caused by the subreflector displacements are similar as that caused by the corresponding aberrations. 2019 IEEE.
产权排序	1
会议录	2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2019
会议录出版者	Institute of Electrical and Electronics Engineers Inc.
语种	英语
URL标识	查看原文
ISBN号	9781728113722
内容类型	会议论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/3916]
专题	新疆天文台_射电天文研究室
作者单位	1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang, China; 2.School of Mechano-Electronic Engineering, Xidian University, Xi'an, China
推荐引用方式 GB/T 7714	Xiang, Binbin,Lian, Peiyuan,Wang, Wei,et al. Effect of subreflector displacement induced aberrations for dual-reflector antenna[C]. 见:. Taiyuan, China. July 18, 2019 - July 19, 2019.