C波段多注速调管高频互作用系统及输入输出系统的设计及实现

发布时间：2019-05-15 21:31

【摘要】：速调管作为真空电子器件的一种,凭借着自身高功率、高增益、高效率、宽带宽等特点,在雷达导航、探测辐照、微波通信、电视广播、空间探测等领域都具有广泛的应用。随着速调管理论基础研究的发展,分布作用技术、输出腔加载滤波器技术、参差调谐技术等先进技术的应用,速调管正在向着更大功率、更宽带宽、更高稳定性方面发展,也在用技术指标的不断提高推动着这些行业前进。速调管根据电子注数目划分为单注速调管和多注速调管。多注速调管由于在降低电压、展宽带宽等方面的优势,这几年得到迅速发展和应用。高频系统和输入输出系统作为多注速调管的重要组成部分,其结构和特性对整管的输出功率、效率、带宽和增益都有决定性的影响。本文结合实际制管需求,围绕着在200kW峰值功率电平上实现500MHz输出带宽的技术指标,开展了一系列的研究实验工作,并最终制作样管进行了测试。本论文的主要工作:以C波段基次模式的矩形谐振腔为研究对象,以HFSS三维电磁场仿真软件为工具,给出了工作模式的场分布、谐振频率及特性阻抗值,分析了谐振腔体积、电子数目、间隙距离、端头面积对谐振频率及特性阻抗值的影响,得出了C波段基次模式矩形谐振腔的最优结构。依据C波段基次模式矩形谐振腔的优化规律,利用计算机模拟技术,分别对TM210和TM220模式的矩形谐振腔进行了结构尺寸设计。分析要实现的指标参数,结合现有工艺水平、研发周期,选定工作模式及谐振腔尺寸。利用分布作用腔技术和滤波器加载技术,在计算机模拟的帮助下实现500MHz的输出带宽,并在氧化铍输出窗的保障下对200kW的微波能量进行输出。运用小信号和大信号程序模拟确定谐振腔数目、谐振频率、品质因数等参数实现群聚带宽。以设计和模拟结果指导制管,制成整管并测试,将测试结果和设计模拟值进行比较,验证设计的可行性和准确性。
[Abstract]:Klystron, as a kind of vacuum electronic device, has been widely used in radar navigation, detection and irradiation, microwave communication, television broadcasting, space detection and other fields because of its high power, high gain, high efficiency, wide bandwidth and so on. With the development of klystron theory, the application of distributed action technology, output cavity loading filter technology, staggered tuning technology and other advanced technologies, klystron is developing towards higher power, wider bandwidth and higher stability. It is also promoting these industries with the continuous improvement of technical indicators. Klystron is divided into single-beam klystron and multi-beam klystron according to the number of electron beam. Multi-beam klystron has been developed and applied rapidly in recent years because of its advantages in reducing voltage and broadening bandwidth. As an important part of multi-beam klystron, the structure and characteristics of high frequency system and input / output system have a decisive influence on the output power, efficiency, bandwidth and gain of the whole tube. In this paper, according to the actual requirements of pipe making, around the technical index of realizing 500MHz output bandwidth on 200kW peak power level, a series of research experiments are carried out, and finally the sample tube is tested. The main work of this paper is as follows: taking the rectangular resonator with C-band base mode as the research object and HFSS 3D electromagnetic field simulation software as the tool, the field distribution, resonance frequency and characteristic impedance of the working mode are given, and the volume of the resonator is analyzed. The influence of electron number, gap distance and end area on resonance frequency and characteristic impedance is obtained, and the optimal structure of C-band base mode rectangular resonator is obtained. According to the optimization law of C-band base mode rectangular resonator, the structure size of TM210 and TM220 mode rectangular resonator is designed by using computer simulation technology. The index parameters to be realized are analyzed, combined with the existing process level, R & D cycle, selected working mode and cavity size. Using distributed cavity technology and filter loading technology, the output bandwidth of 500MHz is realized with the help of computer simulation, and the microwave energy of 200kW is output under the guarantee of beryllium oxide output window. Small signal and large signal program are used to simulate and determine the number of resonators, resonant frequency, quality factor and other parameters to realize the clustering bandwidth. The design and simulation results are used to guide the pipe making, and the whole pipe is made and tested. The test results are compared with the design simulation values to verify the feasibility and accuracy of the design.
【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】：TN122
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本文编号：2477777