Microstrip traveling wave tubes(TWTs)have garnered significant attention due to their potential applications in communication,defense,and industrial systems.This paper presents a compact W-band dual-channel TWT,utiliz...Microstrip traveling wave tubes(TWTs)have garnered significant attention due to their potential applications in communication,defense,and industrial systems.This paper presents a compact W-band dual-channel TWT,utilizing a U-shaped microstrip meander-line slow-wave structure(SWS).High-frequency characteristics are analyzed through simulation and cold tests.The results demonstrate that adjusting structural parameters effectively optimizes the S-parameters.Particle-in-cell(PIC)simulations with an 18.8 kV,0.1 A electron beam predict an output power of 18 W with a gain of 14 dB.Experimental measurements of S-parameters are conducted using three substrate materials:Rogers 5880,quartz,and diamond.The quartz substrate exhibits the closest agreement with simulation results.The results advance the development of the microstrip-based TWTs for high-data-rate communication systems.展开更多
为了实现长时间实时采集并实时传输特定海域的海洋环境噪声、温度和深度等信息,需要提高浮标电子舱中原子钟自主守时的能力。本文基于蒙特卡洛方法对纵向冷却与推射分离的二维磁光阱(two-dimensinal magneto-optical trap with hollow c...为了实现长时间实时采集并实时传输特定海域的海洋环境噪声、温度和深度等信息,需要提高浮标电子舱中原子钟自主守时的能力。本文基于蒙特卡洛方法对纵向冷却与推射分离的二维磁光阱(two-dimensinal magneto-optical trap with hollow cooling and pushing,2D-HP MOT)产生冷铯原子束的过程进行数值模拟。选取1×10^(8)个均匀分布且速度满足麦克斯韦-玻尔兹曼分布的原子,利用龙格-库塔法求解铯原子的运动方程,得到原子束通量和磁光阱系统各项参数的关系。对磁场梯度、蒸气压、横向冷却光、中空光的相关参数进行优化。模拟结果显示优化后的原子束通量达到3.1×10^(11)个/s。该方法能够方便快捷地优化2D-HP MOT系统的参数,为新型浮标的工程化设计提供理论指导。展开更多
基金National Natural Science Foundation of China(62471097,62471115,62471101)Natural Science Foundation of Sichuan Province(2025ZNSFSC0537)Stable Support Porject of 12th Research Institute of China Electronics Technology Group Corporation。
文摘Microstrip traveling wave tubes(TWTs)have garnered significant attention due to their potential applications in communication,defense,and industrial systems.This paper presents a compact W-band dual-channel TWT,utilizing a U-shaped microstrip meander-line slow-wave structure(SWS).High-frequency characteristics are analyzed through simulation and cold tests.The results demonstrate that adjusting structural parameters effectively optimizes the S-parameters.Particle-in-cell(PIC)simulations with an 18.8 kV,0.1 A electron beam predict an output power of 18 W with a gain of 14 dB.Experimental measurements of S-parameters are conducted using three substrate materials:Rogers 5880,quartz,and diamond.The quartz substrate exhibits the closest agreement with simulation results.The results advance the development of the microstrip-based TWTs for high-data-rate communication systems.
文摘为了实现长时间实时采集并实时传输特定海域的海洋环境噪声、温度和深度等信息,需要提高浮标电子舱中原子钟自主守时的能力。本文基于蒙特卡洛方法对纵向冷却与推射分离的二维磁光阱(two-dimensinal magneto-optical trap with hollow cooling and pushing,2D-HP MOT)产生冷铯原子束的过程进行数值模拟。选取1×10^(8)个均匀分布且速度满足麦克斯韦-玻尔兹曼分布的原子,利用龙格-库塔法求解铯原子的运动方程,得到原子束通量和磁光阱系统各项参数的关系。对磁场梯度、蒸气压、横向冷却光、中空光的相关参数进行优化。模拟结果显示优化后的原子束通量达到3.1×10^(11)个/s。该方法能够方便快捷地优化2D-HP MOT系统的参数,为新型浮标的工程化设计提供理论指导。
