Effects of structure parameters on output characteristics of folded waveguide traveling wave tube

Yang Wenyuan; Dong Ye; Dong Zhiwei

doi:10.11884/HPLPB201628.033101

Volume 28 Issue 03

Jan. 2016

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Article Navigation > High Power Laser and Particle Beams > 2016 > 28(03): 033101

Mo Jun, Feng Guoying, Liao Yu, et al. All-optical preferential absorption characteristics of graphene-coated microfiber composite waveguide[J]. High Power Laser and Particle Beams, 2018, 30: 081003. doi: 10.11884/HPLPB201830.180079

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Yang Wenyuan, Dong Ye, Dong Zhiwei. Effects of structure parameters on output characteristics of folded waveguide traveling wave tube[J]. High Power Laser and Particle Beams, 2016, 28: 033101. doi: 10.11884/HPLPB201628.033101

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Effects of structure parameters on output characteristics of folded waveguide traveling wave tube

doi: 10.11884/HPLPB201628.033101

1.
Institute of Applied Physics and Computational Mathematics,P.O.Box 8009-11,Beijing 100094,China

Received Date: 2015-07-03
Rev Recd Date: 2015-11-02
Publish Date: 2016-03-15

Abstract

Abstract

Effects of the structure parameters, including the ratio of b/a, the height of the folded waveguide, the width of the beam tunnel, on the output characteristics of the terahertz band folded waveguide traveling wave tube are analyzed. Calculation results show that there exists an optimal value of b/a for the maximum small signal gain and the coupling impedance. With the increasing of the width of the beam tunnel, the attenuation constant will increase markedly. Thus the small signal gain and the coupling impedance will decreased markedly. Both the attenuation constant and the small signal gain are relatively insensitive to the height of the folded waveguide. The results are useful to the design of the folded waveguide tube in practical applications.
- folded waveguide traveling wave tube,
- terahertz band,
- ohmic losses,
- coupling impedance,
- small signal gain

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