螺旋线行波管慢波组件散热性能的研究  

Heat Dissipation of Slow-Wave Structures of Helix Traveling Wave Tubes

作　　者：刘燕文[1] 韩勇[1] 赵丽[1] 陆玉新[1] 杨建中[1] 王莉[1] 刘胜英[1] 于艳春[1] 王晓艳[1] 闫莹[1] 王立新[1] 赵郁竹[1] 缪国兴[1] 王自成[1] 丁耀根[1] 刘濮鲲[1] 

机构地区：[1]中国科学院电子所,北京100080

出　　处：《真空科学与技术学报》2008年第1期6-10,共5页Chinese Journal of Vacuum Science and Technology

摘　　要：提出了慢波组件散热性能的评价方法——电阻温度系数法,利用此方法对冷弹压法、缠钼带热挤压法、石墨热挤压法及新型的无变形热挤压法制备的慢波组件散热性能进行了实验研究,结果表明无变形热挤压方法比冷弹压法和传统的缠钼带热挤压法制备的慢波组件散热性能好。传统的石墨热挤压法可与无变形热挤压法制备的组件的散热能力相比拟,但石墨热挤压法会引起慢波组件的两次变形,使慢波组件的微波反射点增多增强,从而影响慢波组件的电性能。对国产BeO和进口BN夹持杆组成的慢波组件的散热性能进行了比较研究。同时对镀铜和镀金螺旋线与无镀层螺旋线组成的慢波组件也进行了对比研究。这些结果为制备散热性能好的慢波组件提供了有益的实验结果。A novel method has been successfully developed to accurately evaluate the heat dissipation of the helix slow-wave structures, fabricated in different techniques, of traveling wave tubes（TWT） by measuring the variations in the resistance-temperature coefficient. After judicious choice of assembling conditions, the lab-made non-brazed helix assembly with our newly-developed technique has the strongest heat dissipation and the lowest microwave reflection among various conventional non-brazed helix assemblies. Possible mechanisms were also tentatively discussed.

关 键 词：慢波组件 散热性能 挤压方法 夹持杆 螺旋线 

分 类 号：TN124[电子电信—物理电子学]