【作者】 李力； 冯进军； 瞿波；

【Author】 LI Li,FENG Jin-jun,QU Bo (Vacuum Electronics National Laboratory,Beijing Vacuum Electronics Research Institute,Beijing 100015,China)

【机构】 北京真空电子技术研究所大功率微波电真空器件技术国防科技重点实验室；

【摘要】 介绍了未来星际通讯用Ka波段30 W空间行波管的最新研究进展。行波管电子枪采用传统的皮尔斯型电子枪,高频结构采用螺旋线慢波结构和品型夹持结构,为了保证较高的收集极效率,采用四级降压收集极。测试结果表明在工作频带内行波管输出功率超过34.6 W,总效率超过47.5%。当行波管工作于低频状态时,行波管总效率超过了50%,已达到目前国外同等功率量级Ka波段空间行波管研究水平。更多还原

【Abstract】 This paper describes the performance of a new Ka-band 30 W Space TWT which will be used for satellite communication in the future.The Piece gun and helix slow-wave structure are used in the TWT.The helix is supported by three dialectical rods.In order to get higher efficiency,four-stage depression collector is designed in this paper.The test results indicate that the saturation output power is more than 34.6 W and the efficiency beyond 47.5%in the working bandwidth.Especially working in the low frequency,the efficiency can achieve more than 50%,which has already reached the international highest performance of Ka-band Space TWTs with the same power.更多还原