矩形波导加载光栅结构的太赫兹振荡器
Received:May 02, 2017  Revised:September 15, 2017  点此下载全文
引用本文:张开春,陈科,王奇,盛昌建,袁学松.矩形波导加载光栅结构的太赫兹振荡器[J].Journal of Infrared and Millimeter Waves,2017,36(6):655~659
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Author NameAffiliationE-mail
ZHANG Kai-Chun THz Center, School of Physical Electronics, University of Electronic Science and Technology of China zh.kch@163.com 
CHEN Ke a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu  
WANG Qi a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu  
SHENG Chang-Jian a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu  
YUAN Xue-Song THz CenterSchool of Physical ElectronicsUniversity of Electronic Science and Technology of China  
基金项目:国家重点基础研究发展计划(973计划)
中文摘要:本文采用矩形波导加载光栅的慢波结构作为太赫兹返波管的高频结构,通过理论分析和电磁仿真研究了该慢波结构的色散特性和互作用阻抗,理论分析结果和仿真结果能很好地吻合。在理论分析的基础上,设计了一个中心频率为340GHz的返波管,经粒子模拟软件计算,在较低电流密度的情况下该返波管输出功率达100mW且可调带宽约30GHz。
中文关键词:返波管  矩形波导光栅  慢波结构  太赫兹
 
Grating rectangular waveguide for THz backward wave oscillator
Abstract:A slow-wave structure (SWS) composed of a grating inside a rectangular waveguide is adopted as the circuit of the backward wave oscillator (BWO) in terahertz regime in this paper. Its dispersion curves and interaction impedance are presented by an analytical method and three-dimensional (3-D) electromagnetic software. The results by analysis and simulation agree well. By optimization, a BWO with the SWS at a central frequency 340GHz is fully verified by 3-D particle-in-cell (PIC) code. The BWO is demonstrated more than 100mW output power with very low current density and 30GHz tuning bandwidth.
keywords:Backward wave oscillator (BWO)  rectangular waveguide grating  slow-wave structure (SWS)  terahertz
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