Analysis of oscillation-starting characteristics in millimeter wave extended interaction oscillators
Received:September 03, 2020  Revised:September 07, 2021  download
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Author NameAffiliationE-mail
XU Che School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 China chexu1992@163.com 
MENG Lin School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 China  
YIN Yong School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 China yinyong@uestc.edu.cn 
BI Liang-Jie School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 China  
CHANG Zhi-Wei School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 China  
LI Hai-Long School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 China  
WANG Bin School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 China  
Abstract:The investigations of the oscillation-starting characteristics of a ladder-type RF circuit are proposed to overcome the limitation of high ohmic loss for development of millimeter-wave extended interaction oscillators (EIOs). Based on PIC-simulations, quantitative calculations and theoretical analyses, the designed and fabricated W-band EIO is proved to have the possibility of greatly reducing the oscillation-starting current. By optimizing five aspects including the gap number, cavity dimension, field distribution, operation voltage, and surface loss, the oscillation-starting current of the EIO can be reduced to 0.43 A with a beam voltage of 17.5 kV. According to cold test experiment, the output power attenuation is analyzed and predicted.
keywords:extended interaction oscillator  oscillation-starting condition  slow wave structure  vacuum electronics
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《Journal of Infrared And Millimeter Waves》