140-GHz V-Shaped Microstrip Meander-Line Traveling Wave Tube

F. Shen National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China;, Email: [email protected]

Y.-Y. Wei National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China

X. Xu National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China

Y. Liu National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China

H.-R. Yin National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China

Y.-B. Gong National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China

W.-X. Wang National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China

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Abstract

A study on a miniature, low voltage, wide bandwidth, and high RF efficiency V-shaped microstrip meander-line slow-wave structure is carried out in this paper. The fabrication of this structure is very convenient by utilizing the 2-D micro-fabrication techniques. Radio-frequency characteristics including dispersion properties, interaction impedance and S-parameters are analyzed. Based on these results, nonlinear large signal performances of the V-shaped microstrip meander-line traveling-wave tube are calculated by 3-D particle-in-cell code. This study shows that this miniature millimeter-wave power amplifier is capable of delivering several tens of watts output power ranging from 127 GHz to 145 GHz.

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140-GHz V-Shaped Microstrip Meander-Line Traveling Wave Tube

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140-GHz V-Shaped Microstrip Meander-Line Traveling Wave Tube

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