多频高功率相对论返波振荡器的研究

【作者】 张建国；

【导师】 蒙林；

【作者基本信息】 电子科技大学 ， 等离子体物理， 2010， 硕士

【摘要】 高功率微波源是高功率微波武器的核心部件,传统的高功率微波源一般只有一个主频率。根据高功率微波的效应机理,如果用两个或多个主频率不同的微波脉冲所产生的拍波去攻击电子系统,将会降低其破坏阀值。本文研究多频相对论返波振荡器,提出采用过模非均匀慢波结构作为返波振荡器的互作用腔,让电子注同时与两个模式相互作用,从而达到产生多频的目的。通过建立多频相对论返波振荡器的物理模型,在对其工作原理分析的基础上,进行了粒子模拟的研究,获得了X波段的三频和四频的微波输出。本文的主要研究内容包括以下几个方面：1.介绍了高功率微波的研究背景,从军事的角度介绍了美国国防部相关高功率微波项目的进展情况。概括了目前国内外多频相对论返波振荡器的研究动态,阐述了多频相对论返波振荡器的研究目的和意义。2.对相对论返波振荡器的工作原理进行了阐述,在分析非均匀慢波结构的基础上,提出了多频相对论返波振荡器的设想,并给出了初步的物理模型。3.采用两段式非均匀慢波结构作为多频相对论返波振荡器的互作用腔,进行了粒子模拟,获得了X波段的三频微波输出。4.同样采用两段慢波结构作为多频相对论返波振荡器的互作用腔,使前段周期小于后段的周期,获得了四个频率的微波输出。5.采用复功率守恒法推导了突变结构波导的散射矩阵,利用所编制的程序分析了谐振反射器的反射特性。更多还原

【Abstract】 High-power microwave (HPW) source is a key component of HPW weapons. Traditional HPW source has only one frequency. According to the mechanism of HPW effects, the threshold value of effect will decrease significantly while a beat-wave is used to target an electronic system. In this paper, the multi-frequency relativistic backward wave oscillator is studied and over-mode non-uniform slow wave structure was proposed. In the interaction region of relativistic backward wave oscillator, the electron beam can interact with two modes simultaneously, therefore multiple frequencies were achieved. Based on the analysis of principles of the multi-frequency relativistic backward wave oscillator, the physical model was established and particle simulation was carried out. Output of X-band tri-band and quad-band microwave was acquired. The main contents of this paper are as follows:1.The research background of HPW was described and the progress of HPW projects of U.S.Department of Defense was introduced. In addition, the current domestic and international Trends of multi-frequency relativistic backward wave oscillator were summarized, and the purpose and significance was also elaborated.2.The working principle of relativistic backward wave oscillator was elaborated. Based on the analysis of non-uniform slow wave structure, the Conceive of multi-frequency relativistic backward wave oscillator was proposed and a preliminary physical model was established.3.Particle simulation was carried out and output of X-band tri-band microwave was acquired.4. Output of X-band quad-band microwave was acquired when using the two-stage non-uniform slow wave structure as the interaction region of relativistic backward wave oscillator while the length of the first period is less than the second section.5.Scattering matrix of waveguide with mutant structure was derived with the conservation of complex power technique and the reflective properties of the resonant reflector were analyzed using our programming.更多还原