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Paper Abstract and Keywords
Presentation 2007-11-27 16:30
Generation of THz signals using nonlinear waves in semiconductor devices and circuits
Koichi Narahara (Yamagata Univ.) ED2007-193
Abstract (in Japanese) (See Japanese page) 
(in English) We discuss several topics concerning the generation and management of THz signals using nonlinear waves in semiconductor devices and circuits. A transmission line periodically loaded with resonant tunneling diodes (RTDs) supports the exponential (sinusoidal) mode at the voltage range smaller (larger) than the peak voltage. It is observed that the quasi‐steady isolated pulses resulting from the coupling of the exponential and sinusoidal modes are compressed greatly. In addition, when a step pulse is input to the RTD line, the pulse edge exhibits the back‐and‐forth propagation. Both the pulse and continuous waves can be generated through these characteristics of RTD lines. Composite right‐ and left‐handed (CRLH) transmission lines exhibit both the right‐ and left‐handed properties. We found that the nonlinear Schro¨dinger equation governs the wave propagation in CRLH lines introducing nonlinearity by varactors, and discuss the dynamics of quasi‐solitons developed in one‐ and two‐dimensional CRLH lines. Solitons are also supported in the gated two‐dimensional electron gas (2DEG) systems. We developed a numerical solver of electron transport in the gated 2DEG. We discuss the application of electronic solitons as a THz generator after describing the dynamics of solitons numerically.
Keyword (in Japanese) (See Japanese page) 
(in English) nonlinear waves / semiconductor plasmas / CRLH lines / switch lines / resonant tunneling diodes / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 355, ED2007-193, pp. 33-38, Nov. 2007.
Paper # ED2007-193 
Date of Issue 2007-11-20 (ED) 
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 ED2007-193

Conference Information
Committee ED  
Conference Date 2007-11-27 - 2007-11-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. Research Institute of Electrical Communication 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ED 
Conference Code 2007-11-ED 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Generation of THz signals using nonlinear waves in semiconductor devices and circuits 
Sub Title (in English)  
Keyword(1) nonlinear waves  
Keyword(2) semiconductor plasmas  
Keyword(3) CRLH lines  
Keyword(4) switch lines  
Keyword(5) resonant tunneling diodes  
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1st Author's Name Koichi Narahara  
1st Author's Affiliation Yamagata University (Yamagata Univ.)
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Speaker Author-1 
Date Time 2007-11-27 16:30:00 
Presentation Time 25 minutes 
Registration for ED 
Paper # ED2007-193 
Volume (vol) vol.107 
Number (no) no.355 
Page pp.33-38 
#Pages 6 
Date of Issue 2007-11-20 (ED) 

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