准光波导回旋行波管发展及现状

Development and Current Situation of Quasi-optical Waveguide Gyro-TWTs

基于电子回旋脉塞机理的回旋行波管,兼具高输出功率和宽工作频带的优点,在电子信息领域具有极为广阔的应用空间。随着回旋行波管向高频段发展,受尺寸共度效应的影响,采用低阶模式工作的高频结构截面尺寸逐渐减小,导致器件的功率容量随之降低。采用具有模式选择特性的准光波导作为回旋行波管的高频互作用结构,可实现回旋行波管在高阶模式状态下稳定工作,进而实现放大器向高频段扩展和高功率输出。本文对准光回旋行波管的发展现状和存在的问题及最新研究动态进行了概述。

Gyrotron traveling wave tubes(Gyro-TWTs)based on electron cyclotron maser(ECM)mechanism have the advantages of high output power and broad bandwidth,and have extremely broad application space in electronic information field.With the increase of the operating frequency,due to the scale effect,the cross-sectional size of high-frequency structures operating in low-order modes gradually decreases,resulting in a decrease in the power capacity of the devices.By using quasi-optical waveguide with mode selection characteristics as the high-frequency interaction structure,stable operation of gyro-TWTs in high-order mode states can be achieved,thereby the amplifier can be extended to higher frequency range and higher power output can be achieved.The development status and the problems of quasi-optical gyro-TWTs are reviewed and the latest research trends are simply introduced.