220 GHz three-stage staggered double vane slow-wave structure

Huang Xiaoling; Yang Jun; Deng Guangsheng; Li Haoguang; Kan Yanbei

doi:10.11884/HPLPB201527.073101

Volume 27 Issue 07

Jun. 2015

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Huang Xiaoling, Yang Jun, Deng Guangsheng, et al. 220 GHz three-stage staggered double vane slow-wave structure[J]. High Power Laser and Particle Beams, 2015, 27: 073101. doi: 10.11884/HPLPB201527.073101

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220 GHz three-stage staggered double vane slow-wave structure

doi: 10.11884/HPLPB201527.073101

1.
National Key Laboratory of Advanced Display Technology,Hefei University of Technology,Hefei 230009,China;
2.
Academy of Photoelectric Technology,Hefei University of Technology,Hefei 230009,China;
3.
School of Instrument Science and Opto-electronics Engineering,Hefei University of Technology,Hefei 230009,China

Received Date: 2015-01-21
Rev Recd Date: 2015-04-17
Publish Date: 2015-06-23

Abstract

Abstract

A three-stage 220 GHz staggered double vane TWT was proposed in this paper. The coupler structure, as a key part affecting the whole transmission characteristics, was analyzed. By numerical simulation, a novel coupler formed by height gradually changed grating structure and concentric cylindrical connector was proposed for this structure. The particle-in-cell simulation results revealed that the self-excited oscillation was effectively suppressed, and the maximum gain was 30 dB at 220 GHz with a 3 dB bandwidth of 23 GHz. The transmission deficiency caused by the multi electron beam channel was successfully resolved by this novel structure.
- staggered double vane,
- travelling wave tube,
- transmission characteristic,
- slow-wave structure

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