近年来毫米波回旋管得到了迅速的发展,人们预测大功率回旋管有可能在毫米波雷达、大信息容量的卫星通讯和毫米波的电子对抗等领域里得到应用。回旋管的出现还为聚变等离子体电子回旋共振加热(ECRH)提供了强大的功率源。本文将对ECRH加热的实验结果和加热用的回旋管概况作一介绍,并将对大功率回旋管研制中的几个主要技术关键问题进行讨论。 Millimeter-wave gyroscopes have been rapidly developed in recent years and it is predicted that high-power gyroscopes will find applications in areas such as millimeter-wave radar, large-capacity satellite communications and millimeter-wave electronic warfare. The presence of the gyro also provides a powerful power source for fusion plasma cyclotron resonance heating (ECRH). In this paper, the experimental results of ECRH heating and the overview of the heating gyrotron are introduced, and some key technical problems in the development of the high power gyrotron will be discussed.