大功率回旋管高频结构的研究

发布时间：2018-09-08 11:04

【摘要】：回旋管技术大约已经有40多年的历史了,它的出现弥补了毫米波、亚毫米波段高功率器件的空缺。由于毫米波的频段处于30 GHz到3000 GHz之间,所以,它的最大特点就是波长短、频带宽。针对其波长短的特点,它具有高目标分辨力和高跟踪精度,可以提高武器系统的隐蔽性以及抗干扰能力;此外,较宽的频带可以应用于雷达系统以及通信系统。然而,随着回旋管的发展,更小的腔体加工尺寸成为一个难点,为了避免这个问题,就必须选择比较较高的工作模式。但是,较高的工作模式必然会带来诸多的竞争模式问题。因此,有效的选择最佳的工作模式以及尽最大可能的抑制竞争模式成为一个重要的问题。本文基于回旋管的线性理论、非线性理论以及耦合波理论,对95 GHz渐变结构的回旋管谐振腔进行了详细的研究和设计,它工作在TE22,6模式。最终,得到了比较理想的结构参量和工作参量。这对以后的工程研制提供了很好的理论参考。本文的主要内容大致如下:1.基于回旋管的线性理论,首先对色散方程、耦合系数、起振电流进行推导。然后,在第四章,再根据耦合波理论和上述的推导,对95GHz回旋管谐振腔进行高频结构设计以及研究分析;其次,对色散方程、耦合系数以及起振电流进行求解分析,这些参量对回旋管以后的正常工作很重要,具有指导作用。2.研究回旋管的非线性理论,对电子运动方程、传输线方程作归一化的处理,结合边界条件以及注波互作用的效率进行相应的编程。由此,可以建立注波互作用数值求解方法。3.根据所建立的注波互作用数值求解方法,在第五章对工作在TE22,6模式、95 GHz谐振腔进行热腔的研究,分析了磁场、电压、电流、横纵速度比以及引导中心半径分别对注波互作用效率的影响,基于注波互作用效率最大化原则,最终得到最佳工作参量。
[Abstract]:Gyrotron technology has been around for more than 40 years, and it makes up the gap of millimeter wave and sub-millimeter band high power device. Because the frequency range of millimeter wave is between 30 GHz and 3000 GHz, it is characterized by short wavelength and bandwidth. In view of its short wavelength, it has high target resolution and high tracking accuracy, and can improve the concealment and anti-jamming ability of weapon system. In addition, a wide frequency band can be applied to radar system and communication system. However, with the development of gyrotron, smaller cavity size becomes a difficulty. In order to avoid this problem, a higher working mode must be chosen. However, the higher work model will inevitably bring a lot of competition model problems. Therefore, it is an important problem to choose the best working mode and to restrain competition as much as possible. Based on the linear theory, nonlinear theory and coupled wave theory of gyrotron, the 95 GHz structure gyrotron resonator is studied and designed in detail. It works in TE22,6 mode. Finally, the ideal structure parameters and working parameters are obtained. This provides a good theoretical reference for future engineering research and development. The main contents of this paper are as follows: 1. Based on the linear theory of gyrotron, the dispersion equation, coupling coefficient and starting current are first deduced. Then, in the fourth chapter, according to the coupling wave theory and the above derivation, the high frequency structure of 95GHz gyrotron resonator is designed and analyzed. Secondly, the dispersion equation, coupling coefficient and starting current are solved and analyzed. These parameters are very important for the normal operation of gyrotron after the operation, and play a guiding role of. 2. 2. The nonlinear theory of gyrotron is studied, the equations of electron motion and transmission line are normalized, and the boundary conditions and the efficiency of beam-wave interaction are programmed accordingly. Therefore, a numerical solution method of beam-wave interaction. According to the established numerical solution method of beam-wave interaction, the thermal cavity working in TE22,6 mode 95 GHz resonator is studied in chapter 5. The magnetic field, voltage and current are analyzed. The effects of transverse velocity ratio and guiding center radius on the efficiency of beam-wave interaction are discussed respectively. Based on the principle of maximization of beam-wave interaction efficiency, the optimal working parameters are obtained.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN12

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