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| Presentation | 2013-03-14 13:25 Analysis of Class-E_M Amplifier Taking into Acount Drain Current Fall Time Zhicai Zhang, Tomoharu Nagashima (Chiba Univ.), Xiuqin Wei (Fukuoka Univ.), Hiroo Sekiya (Chiba Univ.)  NLP2012-151 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The class EM amplifier is composed of class E amplifier and auxiliary circuit output harmonic. The class EM amplifier achieves jumpless current and voltage waveforms, so class EM amplifier keeps high efficiency operation with long turn-off switching time in comparision with the class E amplifier.However, the analysis of the conventional class EM amplifier, switch current jump is not taken into account in the auxiliary circuit.Since the current fall time is present, the power loss occurs as there is overlap of switch voltage and switch current. Therefore, in order to obtain a more stringent power efficiency, it is important to take into account the current fall time in the auxiliary circuit. In this paper, we propose analysis and design of class EM amplifier that takes into account the current fall time in the auxiliary circuit. By this analysis, we can carry out more stringent design of the EM amplifier, including the impact of the current fall time in the auxiliary circuit. Moreover, by carrying out the laboratory experiments, we show the validity of the analysis in this paper. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Class-EM power amplifier / current fall time / high power conversion efficiency / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 487, NLP2012-151, pp. 37-42, March 2013. | |
| Paper # | NLP2012-151 | |
| Date of Issue | 2013-03-07 (NLP) | |
| 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 | NLP2012-151 |
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| Conference Information | |
| Committee | NLP |
| Conference Date | 2013-03-14 - 2013-03-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nishi-Chiba campus, Chiba Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Paper Information | |
| Registration To | NLP |
| Conference Code | 2013-03-NLP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Analysis of Class-E_M Amplifier Taking into Acount Drain Current Fall Time |
| Sub Title (in English) | |
| Keyword(1) | Class-EM power amplifier |
| Keyword(2) | current fall time |
| Keyword(3) | high power conversion efficiency |
| Keyword(4) | |
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| 1st Author's Name | Zhicai Zhang |
| 1st Author's Affiliation | Chiba University (Chiba Univ.) |
| 2nd Author's Name | Tomoharu Nagashima |
| 2nd Author's Affiliation | Chiba University (Chiba Univ.) |
| 3rd Author's Name | Xiuqin Wei |
| 3rd Author's Affiliation | Fukuoka University (Fukuoka Univ.) |
| 4th Author's Name | Hiroo Sekiya |
| 4th Author's Affiliation | Chiba University (Chiba Univ.) |
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| Speaker | Author-1 |
| Date Time | 2013-03-14 13:25:00 |
| Presentation Time | 25 minutes |
| Registration for | NLP |
| Paper # | NLP2012-151 |
| Volume (vol) | vol.112 |
| Number (no) | no.487 |
| Page | pp.37-42 |
| #Pages | 6 |
| Date of Issue | 2013-03-07 (NLP) |
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