A Q-band compact high-performance double-ridged orthomode transducer

doi:10.1002/mmce.21982

	A Q-band compact high-performance double-ridged orthomode transducer
	Zhong, Weiye 1,2,3; Yin, Xiaoxing 1; Shi, Shengcai3,4
刊名	INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
	2019-10-08
页码	7
关键词	double-ridged orthomode transducers (OMTs) radio astronomy
ISSN号	1096-4290
DOI	10.1002/mmce.21982
通讯作者	Zhong, Weiye(wyzhong@shao.ac.cn)
英文摘要	In this article, a Q-band compact waveguide orthomode transducer (OMT) based on a stepped double-ridged waveguide is presented. By using a symmetrical structure, good output return losses of above 20 dB are obtained from 35 to 50 GHz. In particular, the measured insertion losses are as low as 0.15 to 0.4 dB over the entire band for both polarization channels with an improved assembly configuration. The measured cross-polarization levels are well below -37 dB, while the circular-polarized output port isolation is less than -20 dB combined with a feed horn and a differential phase shifter. The developed OMTs have been used in a Q-band two-beam cryogenic receiver on the Tianma Radio Telescope, contributing only 1 to 2 K noise at an operation temperature around 20 K.
WOS研究方向	Computer Science ; Engineering
语种	英语
出版者	WILEY
WOS记录号	WOS:000489454800001
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/28288]
专题	中国科学院紫金山天文台
通讯作者	Zhong, Weiye
作者单位	1.Southeast Univ, Sch Informat Sci & Engn, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing, Jiangsu, Peoples R China 4.Chinese Acad Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Zhong, Weiye,Yin, Xiaoxing,Shi, Shengcai. A Q-band compact high-performance double-ridged orthomode transducer[J]. INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING,2019:7.
APA	Zhong, Weiye,Yin, Xiaoxing,&Shi, Shengcai.(2019).A Q-band compact high-performance double-ridged orthomode transducer.INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING,7.
MLA	Zhong, Weiye,et al."A Q-band compact high-performance double-ridged orthomode transducer".INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING (2019):7.