脊加载同轴交错圆盘波导的高频特性
High frequency characteristics of coaxial interlaced ridge-disk-loaded waveguide
1 电子科技大学 通信与信息工程学院， 成都 611731
2 电子科技大学 物理电子学院， 成都 611731
摘要
提出脊加载同轴交错圆盘波导慢波结构,并用电磁场仿真软件HFSS对其色散特性和耦合阻抗进行了计算，分析了不同结构参数对其高频特性的影响。研究表明：脊加载同轴交错圆盘波导有较好的色散特性，它比非同轴结构的带宽有明显增加，同时可以降低慢波结构的相速，用作行波管慢波结构时可以降低工作电压。脊加载同轴交错圆盘波导是一种全金属结构，散热性能好,损耗低，在毫米波及亚毫米波段的行波管中有较好的应用前景。
Abstract
For the first time, the coaxial interlaced ridge-disk-loaded waveguide as slow-wave structure is presented, the software HFSS is introduced to simulate and calculate dispersion relation and coupling impedance. It is found that the change of structure parameter affects the high frequency characteristics. The results indicate that the coaxial interlaced ridge-disk-loaded waveguide could get a very weak dispersion and its bandwidth is better than non-coaxial disk loaded waveguide. Meanwhile the coaxial interlaced ridge-disk-loaded waveguide has lower phase velocity than other coaxial structure. When it is used as the slow-wave structure of the traveling wave tube, the operating voltage decreases. Because the coaxial interlaced ridge-disk-loaded waveguide is a new all-metal structure with the advantage of high power capability and lower losses, it has a large potential application in millimeter and sub-millimeter wave traveling-wave tubes.
参考文献
[1] Parker R K. RF amplifiers based on vacuum microelectronics technology[C]//Proc of IEDM. 1990. 967-970.
[2] 张青春，付成芳，赵波. 螺旋线厚度对螺旋线慢波结构的高频特性的影响[J]. 强激光与粒子束，2013，25(4)：945-949.(Zhang Qingchun, Fu Chengfang, Zhao Bo. Effect of helix thickness on high-frequency characteristics of helical slow-wave structure. High Power Laser and Particle Beams, 2013, 25(4)：945-949)
[3] James B G, Coupled-cavity TWT design for future MM-wave system[J]. Microwave Syst News Commun Technol, 1986(5): 105-106.
[4] 王文祥，宫玉彬，魏彦玉，等. 大功率行波管新型慢波线技术的进展[J]. 真空电子技术，2002(6): 3-18. (Wang Wenxiang, Gong Yubin, Wei Yanyu, et al. The advance of new slow-wave structure for high-power TWT. Vacuum Electronics, 2002(6): 3-18)
[5] 徐翱，胡林林，陈洪斌，等. 太赫兹折叠波导慢波结构S参数特性[J]. 强激光与粒子束，2013, 25(4)：968-972. (Xu Ao, Hu Linlin, Chen Hongbin, et al. S-parameter characteristics in THz folded waveguide slow wave structures. High Power Laser and Particle Beams, 2013, 25(4)：968-972)
[6] Glushkov A R, Mukhin S V, Solntsev V A. Electrodynamic characteristics of coaxial-radial line slow-wave structure[J]. Journal of Communications Technology and Electronic, 1993, 38(2)：99-104.
[7] 岳玲娜. 同轴膜片加载圆波导相对论行波管注-波互作用线性理论研究[J]. 强激光与粒子束，2003,15(9):885-888. ( Yue Linna. Study on the interaction between beam and slow-wave of coaxial disk-loaded waveguide for relativistic traveling wave tube. High Power Laser and Particle Beams, 2003, 15(9)：885-888)
王兵, 文光俊, 王文祥. 脊加载同轴交错圆盘波导的高频特性[J]. 强激光与粒子束, 2014, 26(3): 033004. Wang Bing, Wen Guangjun, Wang Wenxiang. High frequency characteristics of coaxial interlaced ridge-disk-loaded waveguide[J]. High Power Laser and Particle Beams, 2014, 26(3): 033004.
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