Study on a W-band modified V-shaped microstrip meander-line traveling-wave tube
Shen Fei(沈飞), Wei Yan-Yu(魏彦玉)†, Xu Xiong(许雄), Yin Hai-Rong(殷海荣), Gong Yu-Bin(宫玉彬), and Wang Wen-Xiang(王文祥)
National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
Abstract The study on a miniaturized, low-voltage, wide-bandwidth, high-efficiency modified V-shaped microstrip meander-line slow-wave structure is presented. This structure is evolved from the original U-shaped microstrip meander-line slow-wave structure, combining the advantages of a traditional microstrip and a rectangular helix. In this paper, simulations of the electromagnetic characteristics and the beam-wave interaction of this structure are carried out. Our study shows that when the design voltage and the current of a sheet electron beam are set to be 4700 V and 100 mA, respectively, this miniature millimeter-wave power amplifier is capable of delivering 160-W output power with a corresponding gain of 37.3 dB and a maximum interaction efficiency of 34% at 97 GHz.
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 60971038) and the Fundamental Research Funds for the Central Universities (Grant No. ZYGX2009Z003).
Shen Fei(沈飞), Wei Yan-Yu(魏彦玉), Xu Xiong(许雄), Yin Hai-Rong(殷海荣), Gong Yu-Bin(宫玉彬), and Wang Wen-Xiang(王文祥) Study on a W-band modified V-shaped microstrip meander-line traveling-wave tube 2012 Chin. Phys. B 21 064210
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