速调管输出腔间隙阻抗与群时延关系的研究  

Group Delay and Real Part of Self-Impedance in Output Cavity of Klystrons

作　　者：梁源[1,2] 赵鼎[1] 张兆传[1] 王勇[1] 阮存军[1] 丁耀根[1] 阮望[1] 

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,北京100039

出　　处：《真空科学与技术学报》2014年第3期289-293,共5页Chinese Journal of Vacuum Science and Technology

基　　金：国家重点基础研究发展计划项目(Grant No.2013CB328901);国家自然科学基金项目(No.61222110;No.60971073;No.61172015)

摘　　要：从微波理论出发,经过数学变换,建立了群时延与速调管输出腔间隙自阻抗实部的数值关系。用此新方法与传统方法测试了工程上成熟的某速调管的双间隙输出腔。然后,讨论了用群时延来估算间隙阻抗的可行性与局限性,并给出了群时延法与传统方法之间的误差分析。由于该方法的提出基于基本的理论,因此不受具体频段的限制,可应用于微波、毫米波以及亚毫米波等波段。The impedance of the double-gap output cavity of ldystron was mathematically modeled, experimentally measured, and analytically calculated in a novel scheme. The relationship between the group delay and real part of self- impedance was derived with classic microwave theory and by means of mathematical transformation. As a result, the group delay can be used to calculate the real part and variations of the impedance. The real part of the impedance of a double-gap output cavity of a klystron, measured in the new scheme and the conventional methods, were compared. The feasibility and limitations of the newly-developed impedance evaluation technique were tentatively discussed. The relative errors between the new and conventional methods were analyzed. We suggest that when it comes to the microwave, mil- limeter wave, and sub-millimeter wave bands,the new impedance evaluation method may do a good job.

关 键 词：速调管 间隙阻抗 群时延 

分 类 号：TN122[电子电信—物理电子学]