High-efficiency phase-locking experiment of modular Ka-band coaxial magnetrons

Minsheng Song; Lin Meng; Shengen Li; Zhaohui Wu; Liangjie Bi; Yu Qin; Haixia Liu; Liangping Chen; Bin Wang; Yong Yin; Hailong Li

doi:10.1063/5.0167830

AIP Advances (Sep 2023)

High-efficiency phase-locking experiment of modular Ka-band coaxial magnetrons

Minsheng Song,
Lin Meng,
Shengen Li,
Zhaohui Wu,
Liangjie Bi,
Yu Qin,
Haixia Liu,
Liangping Chen,
Bin Wang,
Yong Yin,
Hailong Li

Affiliations

Minsheng Song: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Lin Meng: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Shengen Li: The CFD Laboratory, Beijing Vacuum Electronics Research Institute, Beijing 100015, China
Zhaohui Wu: The CFD Laboratory, Beijing Vacuum Electronics Research Institute, Beijing 100015, China
Liangjie Bi: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Yu Qin: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Haixia Liu: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Liangping Chen: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Bin Wang: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Yong Yin: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Hailong Li: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China

DOI: https://doi.org/10.1063/5.0167830
Journal volume & issue: Vol. 13, no. 9
pp. 095123 – 095123-6

Abstract

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The first full demonstration of a high-efficiency phase-locking mechanism was accomplished in the millimeter-wave (mm wave) bands. Two modular Ka-band coaxial magnetrons were fabricated and phase-locked. The coaxial magnetron consisted of a conventional structure and a carefully designed coupling port that included an RF window. The coupling ports of two magnetrons were connected by coupling bridges to phase lock the coaxial magnetrons in zero-phase and π-phase difference mode, reaching phase-locking efficiencies of 93.4% and 95.6%, respectively. Two phase-locking modes were both verified by a mode detection system based on a symmetrical E-plane T-junction and a high bandwidth, high sample rate oscilloscope. Signals from the oscilloscope confirmed that phase-locking occurred after 25 ns and was reproducible from pulse to pulse. With higher power and more coaxial magnetrons in arrays, 1 MW may be achievable at Ka-band.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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