NDLI: Optimization of the watt-scale 220-GHz folded waveguide BWO

Content Provider	IEEE Xplore Digital Library
Author	Jinchi Cai Huaibi Chen Linlin Hu Guowu Ma Hongbin Chen Xiao Jin
Copyright Year	2015
Description	Author affiliation: Dept. of Eng. Phys., Tsinghua Univ., Beijing, China (Jinchi Cai; Huaibi Chen) \|\| Inst. of Appl. Electron., Mianyang, China (Linlin Hu; Guowu Ma; Hongbin Chen; Xiao Jin)
Abstract	The latest development of 220 GHz folded waveguide (FW) backward wave oscillator (BWO) is presented here. The pill-box window system, beam optical system (BOS), slow wave structure (SWS) have been designed, machined and tested. However, the collector current of the prototype tube can just reach 13 mA with the emission current of 22 mA due to the imperfection of the structure and magnetic field, where no microwave signal detected. In previous SWS design, the threshold current is roughly estimated as 12 mA, which may become higher in real case. Apart from improving the assembly and brazing precision of the structure, the total number of periods is considered to be optimized to decrease the threshold current to 3 mA. The optimization result shows that the BWO can still output watt-scale power around 220 GHz.
Starting Page	1
Ending Page	2
File Size	385060
Page Count	2
File Format	PDF
ISBN	9781479971091
e-ISBN	9781479971107
DOI	10.1109/IVEC.2015.7223891
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-04-27
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electron tubes Optical waveguides Optimization Threshold current Oscillators Electron beams Prototypes wave BWO folded waveguide watt millimeter
Content Type	Text
Resource Type	Article

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