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Paper Abstract and Keywords
Presentation 2012-12-13 14:00
A study on application of Class-E amplifier to EPWM transmitter
Naoki Oyama, Makoto Taromaru (Fukuoka Univ.) MW2012-128
Abstract (in Japanese) (See Japanese page) 
(in English) The PAE of Class-E/F such as switching-mode amplifiers is superior,
but it is nonlinear. EPWM is one of the architectures using the nonlinear amplifiers for linear modulations such as OFDM. There are two ways of PWM switching; first is switching RF input signal with Gilbert cell with PWM pulse of envelope signal, second is switching DCbaias of drain at the drain circuit. Swithing waveforms have been obvious switching drain side.
Though some studies have use the former way, no studey seems to confirm the appropriate drain current waveform and drain voltage waveform in class-E operation. This report studies the waveforms and drain efficiency. Computer simulation shows that PWM switching at RF input makes drain efficiency lower than that of DC supply input.
Keyword (in Japanese) (See Japanese page) 
(in English) Class-E amplifier / EPWM / Delta-sigma modulation / PAE / EER / drain efficiency / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 355, MW2012-128, pp. 7-12, Dec. 2012.
Paper # MW2012-128 
Date of Issue 2012-12-06 (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 MW2012-128

Conference Information
Committee MW  
Conference Date 2012-12-13 - 2012-12-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Univ. of Yamanashi 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2012-12-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on application of Class-E amplifier to EPWM transmitter 
Sub Title (in English)  
Keyword(1) Class-E amplifier  
Keyword(2) EPWM  
Keyword(3) Delta-sigma modulation  
Keyword(4) PAE  
Keyword(5) EER  
Keyword(6) drain efficiency  
Keyword(7)  
Keyword(8)  
1st Author's Name Naoki Oyama  
1st Author's Affiliation Fukuoka University (Fukuoka Univ.)
2nd Author's Name Makoto Taromaru  
2nd Author's Affiliation Fukuoka University (Fukuoka Univ.)
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Speaker Author-1 
Date Time 2012-12-13 14:00:00 
Presentation Time 30 minutes 
Registration for MW 
Paper # MW2012-128 
Volume (vol) vol.112 
Number (no) no.355 
Page pp.7-12 
#Pages 6 
Date of Issue 2012-12-06 (MW) 

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