Study on Wideband Sheet Beam Traveling Wave Tube Based on Staggered Double Vane Slow Wave Structure
Study on Wideband Sheet Beam Traveling Wave Tube Based on Staggered Double Vane Slow Wave Structure
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DOI：
10.1109/tps.2014.2365582
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发表时间：
2014-11
影响因子：
1.5
通讯作者：
Xianbao Shi;Zhanliang Wang;Xianfeng Tang;T. Tang;H. Gong;Qing Zhou;Wenfei Bo;Yabin Zhang;Z. Duan;Yanyu Wei;Y. Gong;Jinjun Feng
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文献类型：
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作者：
Xianbao Shi;Zhanliang Wang;Xianfeng Tang;T. Tang;H. Gong;Qing Zhou;Wenfei Bo;Yabin Zhang;Z. Duan;Yanyu Wei;Y. Gong;Jinjun Feng
研究了一种基于交错双叶片慢波结构的宽带220 GHz片状注行波管。提出了一种在慢波系统中加载衰减器抑制返波振荡的新方法。此外，本文还提出了一种新型的片状电子枪聚焦电极，它是一个整体结构，但被人为地分成两部分，一部分用于X方向的电子束压缩，另一部分用于Y方向的电子束压缩。此外，设计了一种新型阳极，以减小等势面引起的散焦效应。一个非均匀的周期性会切磁铁用于聚焦片状电子束，这是预测表现出100%的束流传输效率在75毫米长的漂移管。研究了慢波系统的高频特性和注波互作用。结果表明，所设计的行波管在214 GHz处的平均功率超过78.125 W，3 dB带宽为31.5 GHz（203 ~ 234.5 GHz）。
In this paper, a wideband 220-GHz sheet-beam traveling-wave tube (TWT) based on staggered double vane slow-wave structure (SWS) is investigated. A novel method of loading the attenuator into the SWS for suppressing backward wave oscillation is proposed. In addition, a novel focusing electrode of the sheet beam gun is carried out in this paper, which is a whole structure but divided into two parts artificially, one is used to compress the electron beam in X-direction and the other is used to compress the electron beam in Y-direction. In addition, a novel anode is redesigned to reduce the defocusing effect caused by the equipotential surfaces. A nonuniform periodically cusped magnet is used for focusing the sheet electron beam, which is predicted to exhibit 100% beam transmission efficiency in a 75-mm length drift tube. The high-frequency characteristics of the SWS and the beam-wave interaction are also studied. The results reveal that the designed TWT is expected to generate over 78.125-W average power at 214 GHz, and the 3-dB bandwidth is 31.5 GHz, ranging from 203 to 234.5 GHz.