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Paper Abstract and Keywords
Presentation 2008-01-31 15:15
Design of Auxiliary Circuit on Class-E_M Power Amplifier
Ryosuke Miyahara, Hiroo Sekiya, Jianming Lu, Takashi Yahagi (Chiba Univ.) NLP2007-134
Abstract (in Japanese) (See Japanese page) 
(in English) The class E$_{\rm M}$ amplifier is composed of class E amplifier and auxiliary circuit output harmonic. The class E$_{\rm M}$ amplifier achieve jumpless current and voltage waveforms, so class E$_{\rm M}$ amplifier keeps high efficiency operation with long turn-off switching time in comparison with the class E amplifier. However, the conventional class E$_{\rm M}$ amplifier design can not consider the efficiency of the auxiliary circuit because of design complexity. This paper presents the novel design of class E$_{\rm M}$ amplifier. Proposed design consider the efficiency of auxiliary circuit, so design auxiliary circuit which achieves ZVS. In addition, in this paper, the design curve of the class E$_{\rm M}$ amplifier with the auxiliary circuit achieves ZVS when input voltage at the auxiliary circuit are made to change is clarified. Moreover, by carrying out the laboratory experiments, we show the validity of the design curve in this paper.
Keyword (in Japanese) (See Japanese page) 
(in English) Class E$_{\rm M}$ amplifier / Class E amplifier / Switching time / High frequency operation / Jumpless / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 477, NLP2007-134, pp. 31-36, Jan. 2008.
Paper # NLP2007-134 
Date of Issue 2008-01-24 (NLP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 NLP  
Conference Date 2008-01-31 - 2008-02-01 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To NLP 
Conference Code 2008-01-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of Auxiliary Circuit on Class-E_M Power Amplifier 
Sub Title (in English)  
Keyword(1) Class E$_{\rm M}$ amplifier  
Keyword(2) Class E amplifier  
Keyword(3) Switching time  
Keyword(4) High frequency operation  
Keyword(5) Jumpless  
1st Author's Name Ryosuke Miyahara  
1st Author's Affiliation Chiba University (Chiba Univ.)
2nd Author's Name Hiroo Sekiya  
2nd Author's Affiliation Chiba University (Chiba Univ.)
3rd Author's Name Jianming Lu  
3rd Author's Affiliation Chiba University (Chiba Univ.)
4th Author's Name Takashi Yahagi  
4th Author's Affiliation Chiba University (Chiba Univ.)
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Speaker Author-1 
Date Time 2008-01-31 15:15:00 
Presentation Time 25 minutes 
Registration for NLP 
Paper # NLP2007-134 
Volume (vol) vol.107 
Number (no) no.477 
Page pp.31-36 
Date of Issue 2008-01-24 (NLP) 

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