改善效率的0.14 THz折叠波导慢波结构设计  

Efficiency improvement design of 0.14 THz folded waveguide slow wave structure

作　　者：雷文强[1] 蒋艺[1] 周泉丰[1] 胡鹏[1] 马国武[1] 陈洪斌[1] LEI Wenqiang;JIANG Yi;ZHOU Quanfeng;HU Peng;MA Guowu;CHEN Hongbing(Institute of Applied Electronics,China Academy of Engineering Physics,Mianyang Sichuan 621999,China)

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621999

出　　处：《太赫兹科学与电子信息学报》2017年第4期543-547,共5页Journal of Terahertz Science and Electronic Information Technology

摘　　要：在研究0.14 THz折叠波导行波管中,提出一种三段相速跳变的设计,使得电子能够在输出段与行波场发生速度再同步,从而提高了电子工作效率。根据色散公式,找到一种影响相速变化的结构因素。通过优化设计进行大信号程序计算,在电压14.95 k V、工作电流30 m A时,与未采用相速变化的结构相比,140 GHz时功率提高了0.84 W,效率提高了9.13%;在142 GHz时功率提高了0.88 W,效率提高了10.4%;-1 d B带宽由原来的5 GHz提高到7 GHz,扩展了行波管的带宽,提高了电子与波的互作用效率。The design of three sections phase velocity taper is put forward in0.14THz folded waveguide Traveling Wave Tubes(TWT)research.It can maintain beam-traveling wave velocity synchronization again in output section of interaction circuit and improve the beam operating efficiency.A structure parameter impacting on phase velocity change is found and optimized by slow wave structure dispersion equation.After optimizing design,a large signal program calculation is performed under operating voltage14.95kV and current30mA.Compared with the structure without phase velocity taper,the efficiency is improved by9.13%in140GHz,and the output power in improved by0.84W.The efficiency is improved by10.4%in142GHz,and the output power is improved by0.88W.-1dB bandwidth is improved to7GHz from5GHz.The design improves the bandwidth and beam-traveling wave work efficiency in D band folded waveguide traveling wave tubes.

关 键 词：0.14THz折叠波导行波管 三段相速跳变 速度再同步 色散分析 大信号程序计算 

分 类 号：TN124[电子电信—物理电子学]