期刊文献+

新疆天文台26米望远镜L波段接收机线-圆偏振的转换 预览

Conversion of Line Polarization to Circular Polarization in L Band Receiver of 26m Telescope in Xinjiang Astronomical Observatory
在线阅读 免费下载
收藏 分享 导出
摘要 新疆天文台南山基地26 m射电望远镜L波段接收机使用线偏振馈源接收电磁波信号用于脉冲星观测。分子谱线观测和VLBI国际联测需要圆偏振信号,因此希望接收机能够观测圆偏振信号。论述了将线偏振电磁波转换为圆偏振电磁波的方案,研究了90 °电桥在偏振转换中的作用,介绍了偏振转换的调试方法。在圆偏振模块中使用90 °电桥完成线偏振信号到圆偏振信号的转换,两路圆偏振信号的隔离度达到使用要求,满足圆偏振观测的需求。这种线偏振信号到圆偏振信号的转换方式不影响接收机的系统温度。 The L-band receiver can be used for pulsar observation,molecular line observation and international VLBI joint-observations of the 26-meter telescope at Nanshan in Xinjiang Astronomical Observatory,Chinese Academy of Sciences.The L-band receiver is mainly developed for pulsar observations,which outputs linear polarization signals.Circular polarization signals are required in molecular line observation and the international VLBI joint observations.We hope that the L-band receiver can be used for both linear polarization signal observation and circular polarization signal observation,so a polarization conversion device is used to convert the linearly polarized signal to the circularly polarized signal in the L-band receiver.The isolation between right-hand circular polarization signal and left-hand circular polarization signal must be large enough in the converting process.In this paper,a 90°Hybrid Coupler is used and its role in the conversion is studied,and the converting method is realized.The isolation of the two circular polarization signals meets the requirements of the subjects,both types of signals can be used in circular polarization observation.
作者 陈勇 孙正文 闫浩 李健 李大磊 李笑飞 刘烽 Chen Yong;Sun Zhengwen;Yan Hao;Li Jian;Li Dalei;Li Xiaofei;Liu Feng(Xinjiang Astronomical Observatory. Chinese Academy of Sciences. Urumqi 830011. China. Email: chenyong@xao.ac.cn)
出处 《天文研究与技术》 CSCD 2019年第3期262-267,共6页 Astronomical Research & Technology
基金 新疆维吾尔自治区自然科学青年基金(2017D01B53)资助.
关键词 线偏振 圆偏振 偏振转换 90°电桥 Linear polarization Circular polarization Polarization conversion 90°Hybrid Coupler
作者简介 陈勇,男,硕士.研究方向:天文仪器与方法.Email:chenyong@xao.ac.cn
  • 相关文献

参考文献8

二级参考文献34

  • 1王锦清,仲伟业.上海65m射电望远镜Ka波段极化器设计[J].中国科学院上海天文台年刊,2009(1):39-50. 被引量:3
  • 2张成全,曹燕华.宽带式隔板极化器[J].现代电子技术,2007,30(12):159-160. 被引量:8
  • 3Renzo Nesti,Luca Cresci,Piero Curioniet al. Technical report n.FARFI1.02/04:22GHz Polarizer . 被引量:1
  • 4Giorgio Bertin,Bruno Piovano,Luciano Accatinoet al. IEEE Transaction on Microwave Theory and Techniques . 2002 被引量:1
  • 5Jens Bornemann,JaroslawUher. IEEE Transaction on Microwave Theory and Techniques . 1999 被引量:1
  • 6Giuseppe Virone,Riccardo Tascone,Oscar Antonio Peverini. IEEE Transaction on Microwave Theory and Techniques . 2008 被引量:1
  • 7Uirich Tucholke,Fritz Arndt. IEEE Transaction on Microwave Theory and Techniques . 1986 被引量:1
  • 8Stephen D Targonski. IEEE Transactions on Antennas and Propagation . 2006 被引量:1
  • 9Boifot A M,Lier E,Schaug T. IEE Produceedings . 1990 被引量:1
  • 10Wollack E J,Grammer W,Kingsley J.ALMA#425:-05/22/02 THE BOIFOT ORTHOMODE JUNC-TION[].. 被引量:1

共引文献4

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈