强激光与粒子束2025，Vol.37Issue(12)：133-137,5.DOI:10.11884/HPLPB202537.250183
五折叠螺旋波纹波导色散特性研究
Study on the dispersion characteristics of a five-fold helical corrugated waveguide
王峨锋 1王哲远 2雷子涵 1李宁 1赵其祥 3雷朝军 4曾旭 1冯进军1
作者信息
- 1. 真空电子技术研究所微波电真空器件国家级重点实验室,北京 100015
- 2. 清华大学航天航空学院,北京 100084
- 3. 桂林电子科技大学信息与通信学院,广西 桂林 541004
- 4. 中国人民警察大学警务装备技术学院,河北 廊坊 065000
- 折叠
摘要
Abstract
[Background]Gyrotron traveling-wave tubes(gyro-TWTs)hold significant potential for applications in millimeter-wave radar,communications,electronic countermeasures,and deep-space exploration.[Purpose]This paper investigates the high-frequency interaction circuit of a gyro-TWT operating in the Q-band under third-harmonic conditions.With an operational magnetic field of approximately 0.6 T,achievable using conventional solenoid magnets,this design overcomes the limitations associated with superconducting magnets.Furthermore,the adoption of a large-orbit electron beam for interaction addresses the low efficiency inherent in small-orbit electron beams under high-harmonic operation.The interaction structure employs a five-fold helical corrugated waveguide,which not only enhances interaction bandwidth but also effectively suppresses mode competition.[Methods]The impedance perturbation method and coupled-wave equations are used.[Results]The transmission coupling characteristics of the five-fold Q-band helical waveguide have been derived.[Conclusions]The mode coupling mechanisms have been analyzed,and the dispersion equation has been formulated,yielding the dispersion curve of the waveguide.Analysis of the dispersion properties reveals the existence of three eigenmodes.Mode 1 is largely decoupled from Modes 2 and 3.Mode 1 has been selected as the operational mode,as it exhibits broad tangential interaction with the electron beam mode within the 42-47 GHz frequency range.This feature significantly extends the interaction bandwidth while simultaneously suppressing mode competition.关键词
五折叠螺旋波纹波导/回旋行波管/大回旋电子注/色散特性/模式竞争Key words
five-fold helical corrugated waveguide/gyrotron traveling-wave tubes/large orbit electron beams/dispersion characteristics/mode competition分类
物理学引用本文复制引用
王峨锋,王哲远,雷子涵,李宁,赵其祥,雷朝军,曾旭,冯进军..五折叠螺旋波纹波导色散特性研究[J].强激光与粒子束,2025,37(12):133-137,5.
