毫米波及太赫兹行波管的功率提高方法评述

短毫米波及太赫兹行波管具有宽频宽、大功率、高效率等优点，在高分辨成像、高速通信、电子对抗等领域有着广泛的应用前景。分析和评述了国内外研究单位的研制水平，以及作者近年来研发的行波管，频率覆盖E波段、W波段、G波段和Y波段等多个频段。为进一步提升毫米波及太赫兹行波管输出功率，在新型折叠波导慢波结构、相速再同步技术、周期聚焦磁场(PCM)聚焦带状电子注、多注集成等方向开展了分析与实验研究，为器件的性能提升和应用推进提供技术支持。

Review of power enhancement methods for millimeter wave and terahertz TWTs

The short millimeter wave and Terahertz Traveling Wave Tubes(TWTs) possess the advantages of wide bandwidth, high power and high efficiency, which show application prospects in military and civil fields such as high-resolution imaging, high-speed communication and electronic countermeasures. The development level of domestic and foreign companies and TWTs developed by author in recent years are analyzed and reviewed, covering several frequency bands such as E-band, W-band, G-band and Y-band. In order to further enhance the output power of TWTs, the technical analysis and experimental research are carried out on the innovative Folding Waveguides(FWG) structure, Phase Velocity Tapering(PVT) technology, band injection Periodic Cusped Magnet(PCM) clustering, multi-injection integration, etc., laying the technical foundation for device performance enhancement and application promotion.