A staggered double vane circuit for a W-band traveling-wave tube amplifier

doi:10.1088/1674-1056/21/6/068403

中国物理B ›› 2012, Vol. 21 ›› Issue (6): 68403-068403.doi: 10.1088/1674-1056/21/6/068403

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

A staggered double vane circuit for a W-band traveling-wave tube amplifier

赖剑强, 魏彦玉, 刘洋, 黄民智, 唐涛, 王文祥, 宫玉彬

National Key Laboratory of Science and Technology on Vacuum Electronics, School of Physical Electronics,University of Electronic Science and Technology of China, Chengdu 610054, China

收稿日期:2011-10-10 修回日期:2011-11-28 出版日期:2012-05-01 发布日期:2012-05-01
基金资助:
Project supported by the National Natural Science Foundation of China for Distinguished Young Scholars (Grant No. 61125103), the National Natural Science Foundation of China (Grant Nos. 60971038 and 60971031), and the Fundamental Research Funds for the Central Universities (Grant No. ZYGX2009Z003).

A staggered double vane circuit for a W-band traveling-wave tube amplifier

Lai Jian-Qiang(赖剑强)^†, Wei Yan-Yu(魏彦玉), Liu Yang(刘洋), Huang Min-Zhi(黄民智), Tang Tao(唐涛), Wang Wen-Xiang(王文祥), and Gong Yu-Bin(宫玉彬)

National Key Laboratory of Science and Technology on Vacuum Electronics, School of Physical Electronics,University of Electronic Science and Technology of China, Chengdu 610054, China

Received:2011-10-10 Revised:2011-11-28 Online:2012-05-01 Published:2012-05-01
Contact: Lai Jian-Qiang E-mail:LJQ6601@foxmail.com
Supported by:
Project supported by the National Natural Science Foundation of China for Distinguished Young Scholars (Grant No. 61125103), the National Natural Science Foundation of China (Grant Nos. 60971038 and 60971031), and the Fundamental Research Funds for the Central Universities (Grant No. ZYGX2009Z003).

摘要/Abstract

摘要： Based on the combination of a staggered double vane slow wave structure (SWS) and round electron beam, a 200-W W-band traveling-wave tube (TWT) amplifier is studied in this paper. The main advantages of round beam operation over the sheet beam is that the round beam can be formed more easily and the focus requirement can be dramatically reduced. It operates in the fundamental mode at the first spatial harmonic. The geometric parameters are optimized and a transition structure for the slow wave circuit is designed which can well match the signal that enters into and goes out from the tube. Then a TWT model is established and the particle-in-cell (PIC) simulation results show that the tube can provide over 200-W output power in a frequency range of 88 GHz-103 GHz with a maximum power of 289 W at 95 GHz, on the assumption that the input power is 0.1 W and the beam power is 5.155 kW. The corresponding conversion efficiency and gain at 95 GHz are expected to be 5.6% and 34.6 dB, respectively. Such amplifiers can potentially be used in high power microwave-power-modules (MPM) and for other portable applications.

关键词: traveling-wave tube, staggered double vane, slow wave structure, W-band

Abstract: Based on the combination of a staggered double vane slow wave structure (SWS) and round electron beam, a 200-W W-band traveling-wave tube (TWT) amplifier is studied in this paper. The main advantages of round beam operation over the sheet beam is that the round beam can be formed more easily and the focus requirement can be dramatically reduced. It operates in the fundamental mode at the first spatial harmonic. The geometric parameters are optimized and a transition structure for the slow wave circuit is designed which can well match the signal that enters into and goes out from the tube. Then a TWT model is established and the particle-in-cell (PIC) simulation results show that the tube can provide over 200-W output power in a frequency range of 88 GHz-103 GHz with a maximum power of 289 W at 95 GHz, on the assumption that the input power is 0.1 W and the beam power is 5.155 kW. The corresponding conversion efficiency and gain at 95 GHz are expected to be 5.6% and 34.6 dB, respectively. Such amplifiers can potentially be used in high power microwave-power-modules (MPM) and for other portable applications.

Key words: traveling-wave tube, staggered double vane, slow wave structure, W-band

中图分类号: (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))

84.40.Fe

85.45.Bz (Vacuum microelectronic device characterization, design, and modeling) 84.30.Le (Amplifiers)

赖剑强, 魏彦玉, 刘洋, 黄民智, 唐涛, 王文祥, 宫玉彬. A staggered double vane circuit for a W-band traveling-wave tube amplifier[J]. 中国物理B, 2012, 21(6): 68403-068403.

Lai Jian-Qiang(赖剑强), Wei Yan-Yu(魏彦玉), Liu Yang(刘洋), Huang Min-Zhi(黄民智), Tang Tao(唐涛), Wang Wen-Xiang(王文祥), and Gong Yu-Bin(宫玉彬) . A staggered double vane circuit for a W-band traveling-wave tube amplifier[J]. Chin. Phys. B, 2012, 21(6): 68403-068403.

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A staggered double vane circuit for a W-band traveling-wave tube amplifier

A staggered double vane circuit for a W-band traveling-wave tube amplifier

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