基于新型折叠波导的双频3π带边振荡器研究  

Investigation on Dual-frequency 3π Band-Edge OscillatorsBased on Novel Folded Waveguide Slow Wave Structures

作　　者：蔡军[1] 王东宇 CAI Jun;WANG Dong-yu(National Key Laboratory of Science and Technology on Vacuum Electronics,Beijing Vacuum Electronics Research Institute,Beijing100015,China)

机构地区：[1]中国电子科技集团公司第十二研究所微波电真空器件国家级重点实验室,北京100015

出　　处：《真空电子技术》2019年第1期41-45,共5页Vacuum Electronics

基　　金：中国电科技术创新基金项目(No.J1710162)

摘　　要：为实现折叠波导慢波结构色散曲线的全维度开发,采用交错子周期折叠波导作为新型慢波结构,开展了3π带边双频振荡器的模拟和设计研究。利用新型折叠波导构建了3π止带,得到了带边高耦合阻抗及双不稳定性特征,实现强电子注-电磁波互作用,获得可双频工作的振荡器。利用CST粒子工作室对振荡器的三维注-波互作用PIC模拟进行了系统研究,振荡频率分别集中在89和95GHz附近,以低频功率最优化为目标得到了3π止带双频振荡器的设计方案,在考虑了高频损耗的条件下,在88.72GHz得到了126W的最大振荡输出功率,为开展实际器件的研制工作奠定了基础。In order to achieve full use of dispersion curve of folded waveguide slow wave structure(FWG SWS),based on stagger half-period FWG SWS,we made simulation and preliminary design of a3πband-edgedual-frequency oscillator.The novel slow wave structure can produce obvious stop-band at the3πphase shift with strong beam-wave interaction at the upper and lower cut-off frequencies.With CST Particle Studio,89 GHz and 95 GHz oscillationwas verified by 3 Dbeam/wave PIC simulation.To achieve the maximum power of lower frequency,the preliminary design was optimized.When the condition of conductivity issupposed to be 1.7×107 S/m,the output power of the oscillatorreaches 126 W at 88.72 GHz,which lays a foundation for research and development of 3πband-edgedual-frequency oscillators.

关 键 词：双频 振荡器 新型折叠波导慢波结构 

分 类 号：TN752[电子电信—电路与系统]