摘要
利用CST PIC计算了基于双排矩形波导慢波结构的W波段行波管的注波互作用,在采用10kV,70mA的电子注的条件下,在92~97GHz范围内,输出功率大于35 W,增益大于30dB,电子效率约为5%。即使在10kV较低的电压下,双排矩形波导慢波结构的尺寸仍然较大,有利于降低制造难度。提出了一种基于电火花线切割的加工制造工艺,成功制造了双排矩形波导慢波结构部件。在92~97GHz范围内对所需盒形窗和电子枪进行了计算机模拟,设计、加工了盒形窗和电子枪的相关零件,制造了相关部件。将慢波结构部件和输能窗部件组装起来进行了冷测,驻波比在90~100GHz范围内小于2.067。
Beam-wave interaction for a W band traveling wave tube(TWT)based on staggered double rectangular waveguide structure(SDRWS)is calculated by CST PIC,showing that the TWT has over 35 W output power and over 30 dB gain and about 5%electron efficiency from 92 GHz to 97 GHz on the condition of a 10 kV,70 mA beam.Even if the beam voltage of 10 kV is relatively low,the sizes of SDRWS still remain relatively large,meaning that SDRWS is in favor of evading the difficulties in manufacturing.A process based on wire electrical discharge machining(wire-EDM)is proposed to manufacture SDRWS for W band TWT,and an SDRWS assembly is successfully obtained.Besides,box-shaped window and electron gun are also simulated by computer,and correspondent parts are manufactured and then put together into assemblies.Then“cold test”is performed on an SDRWS assembly put together with two box-shaped windows,showing that voltage standing wave ratio is lower than 2.067 from 92 GHz to 100 GHz.
作者
王自成
唐伯俊
李海强
田宏
董芳
Wang Zicheng;Tang Bojun;Li Haiqiang;Tian Hong;Dong Fang(Institute of Electronics,Chinese Academy of Sciences,Beijing 101400,China)
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2018年第5期67-71,共5页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(61172016
61401430)
北京市自然科学基金重点项目(201511232037)
关键词
W波段行波管
双排矩形波导慢波结构
盒形窗
PIC模拟
W band traveling wave tube
staggered double rectangular waveguide structure
box-shaped window
PIC simulation
