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Paper Abstract and Keywords
Presentation 2015-05-28 14:20
Fabrication of Composite Electromagnetic Wave Absorber Made of Sendust Particles Dispersed in Polystyrene Resin and Evaluation by the Free Space Method
Takumi Kubota (Doshisha Univ.), Kenji Sakai (Okayama Uni.), Yuki Sato, Shinzo Yoshikado (Doshisha Univ.) MW2015-22
Abstract (in Japanese) (See Japanese page) 
(in English) By development of wireless-communications technology in recent years, the electromagnetic wave absorbers which can operate in the frequency range of several GHz to tens of GHz are required. In order to achieve the good absorption characteristic by low cost and a low environmental impact, the single-layer-type electromagnetic wave absorbers short-circuited the rear surface by the metal plate using the composites of sendust and polystyrene resin were prepared and the electromagnetic wave absorption characteristic was evaluated. Sendust is the alloy of Fe, Si, and Al and the soft magnetic material containing no rare element. Although in the previous study, we have reported that the maximum value of normalized -20dB bandwidth for those absorbers estimated from both the complex permittivity and the complex permeability of the composites measured by the transmission-line method is large value. However, the highly accurate estimation of the complex permittivity and the complex permeability by the transmission-line method using a vector network analyzer is difficult and the measurement is also difficult in the frequency range of 60 GHz and more than. In this study, the direct measurement for the return loss of a single layer type electromagnetic wave absorber in the frequency range of 12.4-110 GHz in free space was tried and the broadband absorption characteristics was confirmed.
Keyword (in Japanese) (See Japanese page) 
(in English) Electromagnetic Wave Absorber / Sendust Particles / Free Space Method / Return Loss / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 66, MW2015-22, pp. 7-12, May 2015.
Paper # MW2015-22 
Date of Issue 2015-05-21 (MW) 
ISSN Print edition: ISSN 0913-5685    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)
Download PDF MW2015-22

Conference Information
Committee MW  
Conference Date 2015-05-28 - 2015-05-29 
Place (in Japanese) (See Japanese page) 
Place (in English) The Univ. of Electro-Commun. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2015-05-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Fabrication of Composite Electromagnetic Wave Absorber Made of Sendust Particles Dispersed in Polystyrene Resin and Evaluation by the Free Space Method 
Sub Title (in English)  
Keyword(1) Electromagnetic Wave Absorber  
Keyword(2) Sendust Particles  
Keyword(3) Free Space Method  
Keyword(4) Return Loss  
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1st Author's Name Takumi Kubota  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Kenji Sakai  
2nd Author's Affiliation Okayama University (Okayama Uni.)
3rd Author's Name Yuki Sato  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
4th Author's Name Shinzo Yoshikado  
4th Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2015-05-28 14:20:00 
Presentation Time 30 minutes 
Registration for MW 
Paper # MW2015-22 
Volume (vol) vol.115 
Number (no) no.66 
Page pp.7-12 
#Pages 6 
Date of Issue 2015-05-21 (MW) 

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