Paper Abstract and Keywords |
Presentation |
2017-06-12 14:15
Characteristics of a Folded Spiral Antenna for coupled-resonant Wireless Power Transfer Kohei Nimura, Hiroshi Hirayama (Nagoya Inst. of Tech.) WPT2017-11 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Coupled resonant wireless power transfer system has an advantage of high efficient mid-range power transmission where impedance matching should be achieved in order to realize maximum available efficiency. For impedance matching of real part, a matching circuit or an indirect power feeding with loop antenna have been used. However, a loss of matching circuit degrades transmission efficiency, and the loop antenna requires installation space.
It is known that a folded dipole antenna used in communication system has a capability of adjusting input impedance by varying radius of conductors or distance between elements. In this paper, folded spiral antenna, which is a self-resonant spiral antenna with a folded structure, is studied. Numerical simulation demonstrates that the folded spiral antenna realizes maximum available efficiency without using a matching circuit. We found that maximum available efficiency is improved by using folded structure. As a result, folded spiral antenna has two functions of impedance matching and improving maximum available efficiency. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Wireless power transfer / Magnetic coupled resonant / Impedance matching / Maximum efficiency / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 117, no. 85, WPT2017-11, pp. 17-22, June 2017. |
Paper # |
WPT2017-11 |
Date of Issue |
2017-06-05 (WPT) |
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) |
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WPT2017-11 |
Conference Information |
Committee |
WPT |
Conference Date |
2017-06-12 - 2017-06-12 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kagoshima Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Wireless Power Transfer |
Paper Information |
Registration To |
WPT |
Conference Code |
2017-06-WPT |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Characteristics of a Folded Spiral Antenna for coupled-resonant Wireless Power Transfer |
Sub Title (in English) |
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Wireless power transfer |
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Magnetic coupled resonant |
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Impedance matching |
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Maximum efficiency |
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1st Author's Name |
Kohei Nimura |
1st Author's Affiliation |
Nagoya Institute of Technology (Nagoya Inst. of Tech.) |
2nd Author's Name |
Hiroshi Hirayama |
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Nagoya Institute of Technology (Nagoya Inst. of Tech.) |
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Speaker |
Author-1 |
Date Time |
2017-06-12 14:15:00 |
Presentation Time |
25 minutes |
Registration for |
WPT |
Paper # |
WPT2017-11 |
Volume (vol) |
vol.117 |
Number (no) |
no.85 |
Page |
pp.17-22 |
#Pages |
6 |
Date of Issue |
2017-06-05 (WPT) |