Developing status of millimeter wave tubes in China

This paper describes the developing status of millimeter wave tubes in China. These tubes include magnetrons, klystrons, traveling wave tubes (TWTs), the extended interaction oscillators (ElOs), the extended interaction amplifiers (ElAs), the diffraction radiation oscillators (DROs or orotrons) and gyrotrons. The basic research, such as new types of slow wave structures and fast wave interaction models, is also described. The further developing trends of millimeter wave tubes in China are discussed in this paper.