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Paper Abstract and Keywords
Presentation 2007-01-27 10:10
On Matching Characteristics of Microwave Absorber Using Metamaterial Based on the Concept of Autonomous Control System of Living Cell
Chikara Kawamura, Youji Kotsuka (Tokai Univ.) EMCJ2006-111
Abstract (in Japanese) (See Japanese page) 
(in English) A new configuration of microwave absorber using metamaterial based on the concept of autonomous control system of living sell is described. This metamaterial is composed of an active or passive circuit in a three dimensional structure which is called a unit cell. The unit cells are arranged based on the Bravais crystal lattice clarification. As an application of autonomous control metamaterial (ACMM), a new microwave absorber has been proposed. In experiment, good matching characteristics below –30dB at 5.25GHz have been obtained in normal incidence. However, in grazing incidence, the matching characteristics particularly in the TM wave deteriorate and tend to move toward the low frequency region. To resolve this problem, inductance is integrated to the unit cell. Good matching characteristics below –25dB at 3.9GHz are obtained in oblique incidence at the angle of 45 degrees. Moreover, new configuration capable of changing matching frequency characteristic is clarified to mount the PIN diode on the surface of unit cells and the direction perpendicularly to them.
Keyword (in Japanese) (See Japanese page) 
(in English) Metamaterial / PIN Diode / EM-Wave Absorber / Changeable frequency characteristic / / / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 508, EMCJ2006-111, pp. 75-79, Jan. 2007.
Paper # EMCJ2006-111 
Date of Issue 2007-01-19 (EMCJ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 EMCJ  
Conference Date 2007-01-26 - 2007-01-27 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2007-01-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On Matching Characteristics of Microwave Absorber Using Metamaterial Based on the Concept of Autonomous Control System of Living Cell 
Sub Title (in English)  
Keyword(1) Metamaterial  
Keyword(2) PIN Diode  
Keyword(3) EM-Wave Absorber  
Keyword(4) Changeable frequency characteristic  
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1st Author's Name Chikara Kawamura  
1st Author's Affiliation Tokai University (Tokai Univ.)
2nd Author's Name Youji Kotsuka  
2nd Author's Affiliation Tokai University (Tokai Univ.)
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Speaker Author-1 
Date Time 2007-01-27 10:10:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2006-111 
Volume (vol) vol.106 
Number (no) no.508 
Page pp.75-79 
#Pages 5 
Date of Issue 2007-01-19 (EMCJ) 

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