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当代真空电子技术的发展，对行波管的工作频段、工作带宽以及电子效率提出了更高的要求。为了迎接下一代卫星通信领域里新的挑战，本文开展W波段修正矩形环对角双杆慢波结构行波管研究。在详细分析行波管慢波结构的高频特性基础上，获得了平坦色散、高互作用阻抗的矩形环对角双杆慢波结构参数，而采用相对较细的连接杆可以获得更大的互作用阻抗。采用侧面共面输入输出耦合器，在70-110GHz频带范围内获得了S11<-22.1 dB的良好传输。PIC计算结果表明，在10250V电子注电压和0.096 A工作电流的条件下，矩形环对角双杆行波管在99 GHz频点处可以提供77.15 W的最大输出功率，对应微分增益和电子效率分别为1.47 dB/mm和7.84%，其3 dB带宽达到14 GHz(87～101 GHz)。
Abstract：The development of modern vacuum electronics technology has placed higher demands on the operating frequency band， bandwidth， and electronic efficiency of traveling wave tubes (TWTs). To meet the new challenges in next-generation satellite communications， this paper studies a W-band TWT based on a modified rectangular-ring vertex double-bar (RRVDB) slow wave structure (SWS). Based on a detailed analysis of the high-frequency characteristics of the SWS， the optimized parameters of the RRVDB SWS with flat dispersion and high interaction impedance were obtained， greater interaction impedance can be achieved by utilizing comparatively thinner connecting bars. Using a side-coplanar input-output coupler， good transmission with S11 < -22.1 dB was achieved in the 70-110 GHz frequency range. PIC simulation results show that under the conditions of a 10250V electron beam voltage and a 0.096 A operating current， the RRVDB TWT can provide a maximum output power of 77.15 W at 99 GHz， corresponding to a differential gain of 1.47 dB/mm and an electronic efficiency of 7.84%， with a 3 dB bandwidth reaching 14 GHz (87～101 GHz).
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基本信息:
DOI：10.13922/j.cnki.cjvst.202512017
中图分类号:TN124
引用信息:
[1]何锐,汤鹏,廖永森,等.W波段修正矩形环对角双杆行波管研究[J].真空科学与技术学报().DOI:10.13922/j.cnki.cjvst.202512017.
基金信息:
国家自然科学基金项目（62361031）
2026-05-12
2026-05-12
2026-05-12