Design and Optimization of Axis-Adjustable Multistage Depressed Collector for 0.22-THz Traveling Wave Tubes

Design and Optimization of Axis-Adjustable Multistage Depressed Collector for 0.22-THz Traveling Wave Tubes
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0.22-THz行波管轴可调多级凹陷集电极的设计与优化

DOI:
10.1109/ted.2021.3074108
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发表时间:
2021-06
影响因子:
3.1
通讯作者:
Zhang ZC
Zhang ZC
中科院分区:
工程技术2区
文献类型:
--
作者:
Ou Y;Liu WX;Zhang ZQ;Yang LL;Zhao ZY;Wei YY;Yang ZQ;Zhang ZC

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为了对多级降压收集极进行有效的优化设计,提出了一种采用遗传算法(GA)对多级降压收集极进行优化设计的方法。通过修改遗传算法的适应度函数,实现了收集极回收效率和电子回流率之间的合理平衡。利用该方法,获得了MDC的最佳恢复效率88.5%,电子回流率0.72%,并设计了一个三级对称收集极,用于0.22 THz行波管。实验结果与模拟结果吻合较好,表明本文提出的方法对高效率行波管的设计具有一定的指导意义。
For the efficient optimization of a multistage depressed collector (MDC), an axis-adjustable MDC optimized using the genetic algorithm (GA) is presented in this article. The optimization processes are realized with a reasonable balance between the collector recovery efficiency and electron reflux rate by modifying the fitness function of GA. Through the proposed method, the best recovery efficiency 88.5% and 0.72% electron reflux rate of MDC are obtained, and a three-stage symmetric collector has been designed with the GA optimization and fabricated, for a 0.22-THz TWT. The experimental results are in well agreement with that of simulations, which indicates that the methods we propose would be beneficial to the design of high efficiency of TWT.
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