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

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 

机构地区：[1]National Key Laboratory of High Power Vacuum Electronics,School of Physical Electronics,University of Electronic Science and Technology of China [2]Southwest China Research Institute of Electronic Equipment(CETC 29) [3]Engneering and Technical College,Chengdu University of Technology [4]Center for THz-Bio Application Systems,Department of Physics and Astronomy,Seoul National University

出　　处：《Chinese Physics Letters》2016年第9期22-26,共5页中国物理快报（英文版）

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

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 dimen- sions 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 simula- tion results. Based on the study, the ORWG will favor the design of a broadband and high-power millimeter-wave TWT.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 dimen- sions 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 simula- tion results. Based on the study, the ORWG will favor the design of a broadband and high-power millimeter-wave TWT.

关 键 词：TWT in on is An Open Rectangular Waveguide Grating for Millimeter-Wave Traveling-Wave Tubes of for WAVE 

分 类 号：TN124[电子电信—物理电子学]