DocumentCode :
78579
Title :
Extremely Broad Bandwidth Input/Output Coupling Structure Design for a 
-Band Sheet-Beam Traveling-Wave Tube
Author :
Yuan Zheng ; Jianxun Wang ; Yong Luo
Author_Institution :
Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Volume :
42
Issue :
10
fYear :
2014
fDate :
Oct. 2014
Firstpage :
3339
Lastpage :
3343
Abstract :
In this paper, a new type input/output (i/o) structure, adopting the multiaperture coupler, for broadband sheet-beam traveling-wave tube was designed and analyzed. This novel coupling structure not only can get a larger electron passway, which will greatly benefit the transmission of the electron beam, without deteriorating electromagnetic transmission characteristics, but also work over an extremely broad bandwidth. The transmission characteristics of this coupling i/o structure are investigated by Ansoft´s high-frequency structure simulator (HFSS). Operating at TE10 mode, the maximum insertion loss and isolation of the i/o structure over 36-52 GHz, which equals to 36.4% bandwidth, are -25 and -20 dB, the transmission coefficient is above -0.3 dB. The results of HFSS were verified by Computer Simulation Technology Microwave Studio.
Keywords :
travelling wave tubes; waveguide couplers; Computer Simulation Technology Microwave Studio; Q-band sheet-beam traveling-wave tube; coupling structure; electron beam transmission; extremely broad bandwidth input/output coupling structure design; high-frequency structure simulator; multiaperture coupler; transmission coefficient; Apertures; Bandwidth; Couplers; Couplings; Electron beams; Electron tubes; Ports (Computers); Extremely broadband; input/output (i/o) structure; multiaperture coupler; sheet-beam traveling wave tube (SB-TWT);
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/TPS.2014.2356468
Filename :
6905832
Link To Document :
