过模高功率太赫兹表面波振荡器优化设计

张海 1; 王建国 1; 2; 童长江 2

您当前的位置：

首页 >

文章列表页 >

过模高功率太赫兹表面波振荡器优化设计

更新时间：2025-12-08

- 过模高功率太赫兹表面波振荡器优化设计
- Optimization of High Power Terahertz Surface Wave Oscillator
- 西安交通大学学报 2008年42卷第12期页码：1531-1536
- 作者机构：
  
  西安交通大学电子与信息工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2008-04-22. 作者简介: 张海(1981-),男,博士生;王建国(联系人),男,研究员,博士生导师. 基金项目: 国家高技术研究发展计划资助项目
- DOI：
  中图分类号： TN128
- 网络首发：2008-12-10，
  
  纸质出版：2008
- 稿件说明：
移动端阅览
张海 1, 王建国 1, 2, 等. 过模高功率太赫兹表面波振荡器优化设计[J]. 西安交通大学学报, 2008,42(12):1531-1536.

张海 1, 王建国 1, 2, et al. Optimization of High Power Terahertz Surface Wave Oscillator[J]. 2008, 42(12): 1531-1536.
张海 1, 王建国 1, 2, 等. 过模高功率太赫兹表面波振荡器优化设计[J]. 西安交通大学学报, 2008,42(12):1531-1536. DOI：

张海 1, 王建国 1, 2, et al. Optimization of High Power Terahertz Surface Wave Oscillator[J]. 2008, 42(12): 1531-1536. DOI：

摘要

提出了一种新型过模高功率太赫兹表面波振荡器

其中慢波系统是由一段过模圆柱波导内壁沿圆周方向平行挖去若干个均匀环形槽构成

相邻槽间距固定不变.该结构较之传统的单模结构能有效降低管内电场强度

避免场击穿

提高系统的功率容量.同时

提出了一种基于表面波工作机制的综合选模方案

即通过电动力学结构选模及电子注参数选模相结合

使系统稳定工作于单模表面波状态

从而达到模式选择的目的.该方法能有效解决过模慢波系统内的模式竞争问题.利用2.5维粒子模拟程序UNIPIC对振荡器进行了物理设计和性能优化

得到了一套最优工作参数.在500 kV电子注电压、1.5 kA电子注电流条件下

模拟得到了42 MW 的峰值功率输出

振荡频率高于0.14 THz

模式为TM

信号的时域波形及频谱特性良好.

Abstract

A novel high power terahertz surface wave oscillator was proposed to obtain the high power terahertz wave sources with high efficiency in steady state. The device consists of a large cross-section(overmoded)slow wave system(SWS)with a unique profile of wall radius specifically designed to support surface wave and to provide a strong beam-wave coupling at moderate voltage. This kind of SWS can decrease the field strength in the structure efficiently and enhance the power capacity of device in the THz regime. A comprehensive method is employed to avoid mode competition in this overmoded situation

that is

to move the operating point to the upper cut off of the transmission band of dispersion curve and to ensure only the TM

mode owns the characteristic of slow surface wave. The 2.5D particle-in-cell simulation program UNIPIC is used to study the

effects of device parameters which are critical to the optimization of output power in a prototype 0.14THz surface wave oscillator. A set of optimal operating parameters are achieved. Under the condition of 500 kV voltage and 1.5 kA current

the output power of 42 MW is achieved at the frequency of 0.14THz in the TM

mode with perfect time plot and fine spectrum characteristic.

关键词

Keywords

references

DRAGOMAN D, DRAGOMAN M. Terahertz fields and applications [J]. Progress in Quantum Electronics, 2004, 28(1):1-66.

GARCIA-GARCIA J, Martin F, ROBERT M E. Optimization of micromachined reflex klystrons for operation at terahertz frequencies [J]. IEEE Trans Microwave Theory Tech, 2004, 52(10): 2366-2370.

IVES L, KORY C, READ M, et al. Development of backward wave oscillators for terahertz applications [C]∥Proceedings of Terahertz for Military and Security Applications Conference. Orlando, FL,USA:SPIE Press, 2003:71-82.

ABE D K, CARMEL Y, MILLER S M, et al. Experimental studies of overmoded relativistic backward-wave oscillators [J]. IEEE Trans Plasma Sci, 1998, 20(3):591-504.

GUO H Z, CARMEL Y, LOU W R, et al. A novel highly accurate synthetic technique for determination of dispersive characteristics in periodic slow wave circuits [J]. IEEE Trans Plasma Sci, 1992, 40(11):2086-2093.

ALEXANDOROV A F, GALUZO S Y, KANAVETS V I, et al. Surface wave excitation by electron flow in a diaphragmatic waveguide [J]. Sov J Tech Phys, 1981, 51(8): 1727-1730.

WANG Jianguo, WANG Yue, ZHANG Dianhui. Truncation of open boundaries of cylindrical waveguides in 2.5 Dimensional problems by using the convolutional perfectly matched layer [J]. IEEE Trans Plasma Sci, 2006, 34(3): 681-690.

LEVUSH B, ANTONWEN T M, BROMBORSKY A, et al. Theory of relativistic backward-wave oscillators with end reflections [J]. IEEE Trans Plasma Sci, 1992, 20(3): 263-279.

VLASOV A N, NUSINOVICH G S, LEVUSH B. Effect of zero spatial harmonic in a slow electromagnetic wave on operation of relativistic backward wave oscillators [J]. Phys Plasma, 1997, 4(5): 1402-1412.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

语义区分和子图整合驱动的知识图谱表示学习方法

水蒸气掺混对氨裂解气旋流燃烧与排放特性的影响研究

隧道内燃料电池汽车氢气泄漏扩散特性及影响因素

融合物理信息与深度算子网络的变压器绕组热-流场快速计算方法

电子级超纯氮深冷空分流程节能优化研究