矩形波导加载光栅结构的太赫兹振荡器
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电子科技大学物理电子学院太赫兹中心,电子科技大学物理电子学院太赫兹中心,电子科技大学物理电子学院太赫兹中心,电子科技大学物理电子学院太赫兹中心,电子科技大学

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国家重点基础研究发展计划(973计划)


Grating rectangular waveguide for THz backward wave oscillator
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a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu,a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu,a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu,a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu,University of Electronic Science and Technology of China

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    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。

    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.

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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].红外与毫米波学报,2017,36(6):655~659]. ZHANG Kai-Chun, CHEN Ke, WANG Qi, SHENG Chang-Jian, YUAN Xue-Song. Grating rectangular waveguide for THz backward wave oscillator[J]. J. Infrared Millim. Waves,2017,36(6):655~659.]

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  • 收稿日期:2017-05-02
  • 最后修改日期:2017-09-15
  • 录用日期:2017-06-08
  • 在线发布日期: 2017-11-30
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