S波段径向注同轴槽振荡器  

S band radial beam coaxial grating backward wave oscillator

作　　者：王战亮[1,2] 王环宇 何子远 路志刚[1] 巩华荣[1] 王少萌[1] 宫玉彬[1] Wang Zhanliang;Wang Huanyu;He Ziyuan;Lu Zhigang;Gong Huarong;Wang Shaomeng;Gong Yubin(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;Science and Technology on Low-Light-Level Night Vision Laboratory,Xi’an 710000,China;Shenzhen Institute for Advanced Study,University of Electronic Science and Technology of China,Shenzhen 518000,China)

机构地区：[1]电子科技大学电子科学与工程学院,成都610054 [2]微光夜视国家重点实验室,西安710000 [3]电子科技大学深圳高等研究院,广东深圳518000

出　　处：《强激光与粒子束》2023年第11期56-59,共4页High Power Laser and Particle Beams

基　　金：National Key R&D Program(G072022YFF0707602);Guangdong Key R&D Program(2021B0101300003)。

摘　　要：高功率微波器件在雷达、电子对抗等方面具有重要的应用潜力,因此得到广泛的关注。然而,庞大的体积和重量,以及较低的效率和较短的寿命,严重限制了高功率微波的应用范围。提出了一种径向电子注驱动的同轴槽振荡器,该振荡器无需聚焦系统,从而能够大幅度减少体积和耗能。采用由外向内的径向电子注,阴极电流密度低,可以采用热阴极替代爆炸发射阴极,从而提高器件寿命。PIC仿真中,采用460 kV,6 kA径向电子注能够在3.8 GHz产生1.2 GW的输出,对应效率43.5%。High power microwave devices are investigated extensively,because of their potential applications,such as advanced radars,electromagnetic warfare systems.However,low efficiency,enormous volume,huge weight and short lifetime limit their applications.In this paper,a coaxial grating slow wave structure backward wave oscillator(BWO)driven by radial beam is proposed.The focusing system is eliminated in the particle in cell simulation,which can reduce the volume and the power loss in practice.The lifetime of the BWO can also be improved with the thermionic radial beam cathode instead of the explosive emission cathode.After optimization,the BWO driven by 460 kV,6 kA radial beam can produce 1.2 GW at frequency 3.8 GHz,with the efficiency of 43.5%.

关 键 词：径向电子注 返波振荡器 高功率微波 

分 类 号：TL501+.5[核科学技术—核技术及应用]