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Abstract
A dual-beam planar slow wave structure (SWS), named dielectric supported ring-bar SWS is proposed in this paper. The planar SWS is supported by two dielectric rods at the side edges, making it fit for dual sheet beam operation. The high frequency and transmission characteristics of the proposed SWS are investigated. The backward-wave oscillation and higher harmonic waves are effectively suppressed by setting two cathodes in the same plane parallel to the SWS and negative phase-velocity jumping. The hot performance of the proposed SWS is carried out by using particle-in-cell (PIC) simulation, in which two sheet electron beams (9.7 kV, 0.2 A) are employed to provide direct current power. With an input power of 1W, the output power is 180 W at 38 GHz and the corresponding gain is 22.6 dB. Besides, after adding dielectric rods to the output part, the entire structure dissipates heat well by thermal analysis.
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No potential conflict of interest was reported by the author(s).
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Yang Dong
Yang Dong received the B.S. degree from School of Electronic Science and Engineering, Xiamen University, Xiamen, China, in 2019. He is currently pursuing the Master's degree with the National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China (UESTC), Chengdu, China. His current research interests include planar slow wave structure and radial klystron.
Zijun Chen
Zijun Chen is currently pursuing the Master's degree with the National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China (UESTC), Chengdu, China. Her current research interests include planar slow wave structure and vortex magnetic field.
Xinyi Li
Dr. Xinyi Li received the Ph.D. degree with the National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China (UESTC), Chengdu, China, in 2018. His current research interests include radial sheet electron beam traveling-wave tubes.
Hexin Wang
Hexin Wang is currently pursuing the Ph.D. degree with the National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China (UESTC), Chengdu, China. His current research interests include planar slow wave structure traveling-wave tubes.
Zhanliang Wang
Dr. Zhanliang Wang received the Ph.D. degree from the University of Electronic Science and Technology of China (UESTC), Chengdu, China, in 2010. Currently he is working as an Assistant Professor at University of Electronic Science and Technology of China, China. His current research interests include high-power microwave, sheet beam device and pulse power technology.
Shaomeng Wang
Dr. Shaomeng Wang received the Ph.D. degree from the University of Electronic Science and Technology of China (UESTC), Chengdu, China, in 2013. From Sep. 2014 to Mar. 2020, he has been a Research Fellow with Nanyang Technological University, Singapore. He is currently Professor with University of Electronic Science and Technology of China, China. His current research interests include millimeter-wave/THz devices and applications.
Zhigang Lu
Dr. Zhigang Lu received the Ph.D. degree in physical electronics from the University of Electronic Science and Technology of China (UESTC), Chengdu, China, in 2008. From 2007 to 2008, he was with the Argonne National Laboratory, USA, as a Visiting Scholar. He is currently an Associate Professor with the National Key Laboratory of Science and Technology on Vacuum Electronics, UESTC. His current research interests include the novel high-power microwave and millimeter wave traveling wave tubes.
Huarong Gong
Dr. Huarong Gong received the Ph.D. degrees in physical electronics from the University of Electronics Science and Technology of China (UESTC), Chengdu, China, in 2005. He is currently an Associate Professor with University of Electronic Science and Technology of China, China. His current research interests include plasma physics, computational physics and vacuum electronics.
Zhaoyun Duan
Dr. Zhaoyun Duan received the Ph.D. degree from the University of Electronic Science and Technology of China (UESTC), Chengdu, China, in 2004. Prof. Duan is a Senior Member with the Institution of Chinese Electronics. He is currently Professor with University of Electronic Science and Technology of China, China. His current research interests include high power microwave/millimeter wave/terahertz radiation source.
Jinjun Feng
Dr. Jinjun Feng received the B.S. degree from the Department of Electronic Engineering, Tsinghua University, Beijing, China, in 1988, and the M.Sc. and Ph.D. degrees from the Beijing Vacuum Electronics Research Institute (BVERI), Beijing, in 1990 and 2001, respectively. He has been the Deputy Director with the National Key Laboratory of Science and Technology on Vacuum Electronics, Beijing, since 2004, and a Vice Chief Engineer with BVERI since 2010.
Yubin Gong
Dr. Yubin Gong received the Ph.D. degree from the University of Electronic Science and Technology of China, Chengdu, China, in 1998. He is currently Professor with University of Electronic Science and Technology of China, China. His current research interests include broadband high-power traveling-wave tubes.