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Paper Abstract and Keywords
Presentation 2022-12-09 14:35
Optimal Design of Attenuator for Helix-TWTs by Using 3D Numerical Simulations
Kenji Nakajima (GSST/NECSpace/NETS), Kunio Tsutaki (RIE Shizuoka Univ.), Yoichiro Neo, Hidenori Mimura (RIE Shizuoka Univ./GSST Shizuoka Univ.) ED2022-66
Abstract (in Japanese) (See Japanese page) 
(in English) With the recent advancement of communication capacity and speed, traveling wave tubes (TWT), that are used as final stage amplifiers in communication systems, are in strong demand for higher performance such as high output power, high efficiency and low distortion. Helix type TWTs have an attenuator in the middle of the slow wave circuit in order to obtain a high gain of 40-50dB or more. The attenuator is formed by spraying carbon onto the three support rods that fix the helix, and this density (loss pattern) is an important design element in improving the performance of TWTs. In this research, we propose a method to optimize the loss pattern by 3D numerical simulation, that was difficult with the conventional design method.
Keyword (in Japanese) (See Japanese page) 
(in English) TWT / Numerical Simulation / Optimal Design / Attenuator / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 298, ED2022-66, pp. 51-54, Dec. 2022.
Paper # ED2022-66 
Date of Issue 2022-12-01 (ED) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee ED  
Conference Date 2022-12-08 - 2022-12-09 
Place (in Japanese) (See Japanese page) 
Place (in English) 12/8 Nagoya University, 12/9 WINC AICHI 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Applications of electron and ion beam 
Paper Information
Registration To ED 
Conference Code 2022-12-ED 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Optimal Design of Attenuator for Helix-TWTs by Using 3D Numerical Simulations 
Sub Title (in English)  
Keyword(1) TWT  
Keyword(2) Numerical Simulation  
Keyword(3) Optimal Design  
Keyword(4) Attenuator  
Keyword(5)  
Keyword(6)  
Keyword(7)  
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1st Author's Name Kenji Nakajima  
1st Author's Affiliation Graduate School of Science and Technology, Shizuoka University/NEC Space Technologies, Ltd./NEC Network and Sensor Systems, Ltd. (GSST/NECSpace/NETS)
2nd Author's Name Kunio Tsutaki  
2nd Author's Affiliation Shizuoka University Research Institute of Electronics (RIE Shizuoka Univ.)
3rd Author's Name Yoichiro Neo  
3rd Author's Affiliation Shizuoka University Research Institute of Electronics/Graduate School of Science and Technology, Shizuoka University (RIE Shizuoka Univ./GSST Shizuoka Univ.)
4th Author's Name Hidenori Mimura  
4th Author's Affiliation Shizuoka University Research Institute of Electronics/Graduate School of Science and Technology, Shizuoka University (RIE Shizuoka Univ./GSST Shizuoka Univ.)
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Speaker Author-1 
Date Time 2022-12-09 14:35:00 
Presentation Time 25 minutes 
Registration for ED 
Paper # ED2022-66 
Volume (vol) vol.122 
Number (no) no.298 
Page pp.51-54 
#Pages
Date of Issue 2022-12-01 (ED) 


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