基于电子注可回收能力的空间行波管慢波结构的优化设计  

Optimization of slow wave structures of space traveling wave tube based on collectability of spent beam

作　　者：易红霞[1,2] 肖刘[1] 刘濮鲲[1] 郝保良[1,2] 李飞[1,2] 李国超[1,2] 

机构地区：[1]中国科学院电子学研究所,中国科学院高功率微波源与技术重点实验室,北京100190 [2]中国科学院研究生院,北京100190

出　　处：《物理学报》2011年第6期787-793,共7页Acta Physica Sinica

基　　金：国家自然科学基金重点项目(批准号:60931001);国家自然科学基金青年科学基金(批准号:60801030)资助的课题~~

摘　　要：探索了一种行波管效率提高的优化设计方法.该方法在不降低电子效率的前提下,对慢波结构进行优化以获得互作用后电子注能量台阶状的分布,为研制高回收效率的收集极奠定基础.提出了用最大可回收效率表示的目标函数来衡量电子注的可回收能力.与单纯以电子效率为目标的慢波结构优化相比,以电子注可回收能力最大化为目标的慢波结构优化,不仅能在工作频带内提高总效率,而且行波管的非线性指标没有明显降低,小信号增益却有较大的提高.A design method to enhance the efficiency of traveling wave tube is explored.The stair-step energy distribution of spent beam which is beneficial for the development of high collector efficiency depressed collector is obtained via the optimization of slow wave structures without degrading the basic electronic efficiency.A goal function expressed in the form of maximum collector efficiency of spent beam is designed to evaluate the collectability of spent beam.The optimization of slow wave structure based on collectability enhances the overall efficiency in the operation frequency band,and improves the small signal gain,but does not degrade nonlinear characteristic greatly compared with the simply optimization of slow wave structure based on electronic efficiency.

关 键 词：空间行波管 可回收能力 慢波结构 优化设计 

分 类 号：TN124[电子电信—物理电子学]