工作脉宽对W波段行波管温度的影响研究  

Effect of Working Pulse-Width on the Temperature of W-Band Traveling Wave Tubes

作　　者：高畅 张小青 杜英华[1] 潘攀[1] 蔡军[1] 冯进军[1] GAO Chang;ZHANG Xiao-qing;DU Ying-hua;PAN Pan;CAI Jun;FENG Jin-jun(National Key Laboratory of Science and Technology on Vacuum Electronics,Beijing Vacuum Electronics Research Institute,Beijing 100015,China)

机构地区：[1]北京真空电子技术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》2023年第5期76-80,共5页Vacuum Electronics

摘　　要：毫米波行波管具有大功率、宽频带、高效率等特点,在雷达、高速通信、电子对抗等现代电子装备中广泛应用。本文基于Ansys软件对W波段行波管进行热特性仿真,分析工作脉宽对行波管温度的影响。随着工作脉宽的增加,行波管温度升高,在占空比35%下,脉宽0.1、1和3 s的行波管温度分别达到了连续波行波管温度的56.8%,80.7%和87.2%。提高占空比至70%,脉宽0.1和1 s的行波管温度已达到连续波行波管温度的84%和96%,接近于连续波工作状态的行波管温度。通过分析不同脉宽的行波管温度差异,为长脉宽W波段行波管热可靠性设计奠定技术基础。Millimeter-wave traveling-wave tubes(TWTs)have the characteristics of high power,broad band and high efficiency,and are widely used in modern electronic equipment such as radar,high-speed communication and electronic countermeasures.Based on ANSYS software,the thermal characteristics of the W-band TWT are simulated,and the influence of working pulse-width on the temperature of the TWT is analyzed.With the increase of working pulse-width,the temperature of the TWT increases.At the duty-cycle of 35%,the temperatures of the TWTs with pulse-width of 0.1 seconds,1 second and 3 seconds reach 56.8%,80.7%and 87.2%of the continuous-wave(CW)TWT temperature,respectively.Increasing the duty-cycle to 70%,the temperatures of the TWTs with pulse-width of 0.1 seconds and 1 second reach 84%and 96%of the temperature of the CW TWT,which is close to the temperature of the TWT in the continuous wave operating state.By analyzing the temperatures of the TWTs with different pulse-widths,the research lays a foundation for the thermal reliability design of W-band TWTs with long pulse-width.

关 键 词：脉宽 占空比 脉冲行波管 连续波行波管 热分析 

分 类 号：TN124[电子电信—物理电子学]