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作为行波类真空电子器件的核心组件,慢波结构是一种周期结构,其场可以有无限多个模式,每个模式由无穷多个空间谐波构成.每个空间谐波有相应的色散曲线且曲线各段有不同的特性.提出了周期结构色散特性的全维度开发的概念,并以一种可用微电机系统(MEMS)技术加工的折叠波导(FWG)慢波结构为例,对其色散特性进行了分析,利用这些色散特性开展了行波管(TWT)、返波管(BWO)等传统器件的研究工作,同时提出了过模器件、带边振荡器(BO)和谐波放大器(THAT)等新型器件,这些器件的实验研究则以W波段及其以上频率为主,最后给出了突破的关键技术以及测试得到的器件的主要性能.
As the core component of traveling wave vacuum electronics, the slow-wave structure is a kind of periodic structure, its field can have an infinite number of modes, each mode consists of an infinite number of spatial harmonics. Each spatial harmonic has a corresponding dispersion Curve and the segments of the curve have different characteristics. The concept of full-dimension development of periodic structure dispersion characteristics is proposed. Taking a folded waveguide (FWG) slow-wave structure that can be processed by micro-electromechanical system (MEMS) technology as an example, Dispersion characteristics are analyzed. The research on traditional devices such as TWT and BWO has been carried out by using these dispersion characteristics. At the same time, over-mode devices, band-edge oscillator (BO) and harmonic amplifier (THAT) and other new devices. The experimental research of these devices mainly focuses on the W band and above, and finally gives the key technologies of breakthrough and the main performance of the tested devices.