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An Open Rectangular Waveguide Grating for Millimeter-Wave Traveling-Wave Tubes

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【作者】 廖明亮； 魏彦玉； 王海龙； 黄宇； 徐进； 刘漾； 郭彍； 牛新建； 宫玉彬； Gun-Sik Park；

【Author】 Ming-Liang Liao;Yan-Yu Wei;Hai-Long Wang;Yu Huang;Jin Xu;Yang Liu;Guo Guo;Xin-Jian Niu;Yu-Bin Gong;Gun-Sik Park;National Key Laboratory of High Power Vacuum Electronics,School of Physical Electronics,University of Electronic Science and Technology of China;Southwest China Research Institute of Electronic Equipment(CETC 29);Engneering and Technical College,Chendu University of Technology;Center for THz-Bio Application Systems,Department of Physics and Astronomy,Seoul National University;

【机构】 National Key Laboratory of High Power Vacuum Electronics,School of Physical Electronics,University of Electronic Science and Technology of China； Southwest China Research Institute of Electronic Equipment(CETC 29)； Engneering and Technical College,Chengdu University of Technology； Center for THz-Bio Application Systems,Department of Physics and Astronomy,Seoul National University；

【摘要】 Millimeter-wave traveling-wave tube(TWT) prevails nowadays as the amplifier for radar,communication and electronic countermeasures.The rectangular waveguide grating is a promising all-metal interaction circuit for the millimeter-wave TWT with advantages of high power capacity,fine heat dissipation,scalability to smaller dimensions for shorter wavelengths,compact structure and robust performance.Compared with the traditional closed structure,the open rectangular waveguide grating(ORWG) has wider bandwidth,lower cut-off frequency,and higher machining precision for higher working frequencies due to the open transverse.It is a potential structure that can work in the millimeter wave and even Terahertz band.The rf characteristics including dispersion and interaction impedance are investigated by both theoretic calculation and software simulation.The influences of the structure parameters are also discussed and compared,and the theoretical results agree well with the simulation results.Based on the study,the ORWG will favor the design of a broadband and high-power millimeter-wave TWT.

【Abstract】 Millimeter-wave traveling-wave tube(TWT) prevails nowadays as the amplifier for radar,communication and electronic countermeasures.The rectangular waveguide grating is a promising all-metal interaction circuit for the millimeter-wave TWT with advantages of high power capacity,fine heat dissipation,scalability to smaller dimensions for shorter wavelengths,compact structure and robust performance.Compared with the traditional closed structure,the open rectangular waveguide grating(ORWG) has wider bandwidth,lower cut-off frequency,and higher machining precision for higher working frequencies due to the open transverse.It is a potential structure that can work in the millimeter wave and even Terahertz band.The rf characteristics including dispersion and interaction impedance are investigated by both theoretic calculation and software simulation.The influences of the structure parameters are also discussed and compared,and the theoretical results agree well with the simulation results.Based on the study,the ORWG will favor the design of a broadband and high-power millimeter-wave TWT.

【关键词】 waveguide； millimeter； impedance； grating； scalability； amplifier； dimensions； bandwidth； dissipation； rectangular；
【基金】 Supported by the National Natural Science Foundation of China under Grant No 61271029;the National Science Fund for Distinguished Young Scholars of China under Grant No 61125103;the National Research Foundation of Korea under Grant No MSIP:NRF-2009-0083512
  • 【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2016年09期
  • 【分类号】TN124
  • 【下载频次】34
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