【摘要】 磁控管是一种结构简单而效率较高的自振荡器件,可将输入的交流电电能转换为输出的微波电磁能,广泛应用于雷达、导航和微波加热.这一重要应用技术的工作原理较复杂,涉及电工技术、高频电磁场理论和复杂的电子运动,本文简述了磁控管的组成结构、分析方法、谐振频率和能量转换的过程,介绍了磁控管内电子的运动形态和典型速度,以及磁控管中的正交静态电磁场对磁控管建立微波振荡的作用,并在固有振荡的激励方面将磁控管与弓弦乐器做了类比.更多还原

【Abstract】 The magnetron is an efficient self-oscillation device for transferring the alternating current electrical energy to microwave electromagnetic energy and being used extensively for radar,navigation,microwave ovens,and etc.The construction of magnetron is simple while its working principle is complex,which is involved with electric engineering,high frequency electromagnetic field and complex motion of electrons bunches.The content herein sketches briefly the component construction of magnetron,analysis method of operation mechanism,resonance frequency and the energy conversion during electrons motion.The starting of microwave oscillation controlled by orthogonal static electromagnetic field is discussed and an analogy is made between the resonance excitation of magnetron and a bow drawing across the strings of a violin.更多还原