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Alternative TitleStudy of a Turnstile Ultra Wideband Waveguide Ortho⁃mode Transducer
陈卯蒸1,2; 宁云炜1,2; 马军1,2
Source Publication无线电工程
Contribution Rank1

正交模耦合器是反射面天线馈源系统中非常重要的无源器件,正交模耦合器的带宽决定了天线的工作带宽,其性能直接影响接收机的性能。为满足新疆天文台Q波段(30~50 GHz)制冷接收机的需求,描述了Turnstile结构的正交模耦合器,公共端口为圆波导,2个分支端口为标准矩形波导。应用电磁仿真软件HFSS对正交模耦合器进行了设计与优化。仿真结果表明,在50%相对带宽内,回波损耗优于-22 dB,正交隔离度优于-46 dB。为进一步开展毫米波宽带OMT的研究提供了理论设计基础。

Other Abstract

Ortho⁃mode transducer ( OMT) is a very important passive component in a reflector antenna feed system. The bandwidth of the ortho⁃mode transducer determines the bandwidth of the antenna and its performance directly affects the performance of the receiver. In order to meet the need of Q band (30~ 50 GHz) cryogenic receiver for Xinjiang Astronomical Observatory, the OMT based on Turnstile structure is described, which has public port based circular waveguide and two branch ports based on standard rec⁃tangular waveguide. The ortho⁃mode transducer is designed and optimized for the Q band (30~50 GHz) by electromagnetic simulation software HFSS. Simulation results indicate the return loss is better than -22 dB, the orthogonal isolation is better than -46 dB within 50% relative bandwidth. The study provides theoretical design basis for further research of millimeter wave broadband OMT.

Keyword正交模耦合器 超宽带 无源器件
Indexed By其他
Project Number2015CB857100 ; U1431230 ; 2015-HXZC-01
Funding Organization国家重点基础研究发展计划基金资助项目 ; 国家自然科学基金资助项目 ; ”西部之光”后续支持项目
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Document Type期刊论文
Affiliation1.中国科学院新疆天文台, 新疆乌鲁木齐830011
2.中国科学院射电天文重点实验室, 江苏南京210008
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
陈卯蒸,宁云炜,马军. 基于Turnstile结构的超宽带正交模耦合器研究[J]. 无线电工程,2016,46(10):54-57.
APA 陈卯蒸,宁云炜,&马军.(2016).基于Turnstile结构的超宽带正交模耦合器研究.无线电工程,46(10),54-57.
MLA 陈卯蒸,et al."基于Turnstile结构的超宽带正交模耦合器研究".无线电工程 46.10(2016):54-57.
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