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| Paper Abstract and Keywords | ||
| Presentation | 2019-01-17 14:25 [Tutorial Lecture] Quality factor of electrically small antennas and their broadbanding Keisuke Noguchi (KIT)  AP2018-157 WPT2018-57 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Electrically small antennas which size is smaller than wavelength of the operating frequency are described with respect to lower limitation $Q$ factor, gain and bandwidth. Quality factors of typical small antennas such as inverted-L and normal mode helical antennas are evaluated with relation to the lower limitation $Q$. As an evaluation of electrically small antennas, product of bandwidth and radiation efficiency reported by Sievenpiper's group is introduced. Multi-mode excitation as a broadbanding method of small antenna is explained with design examples. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | small antenna / bandwidth enhancement / equivalent circuit / maximum bandwidth / multi-mode / planar antenna / Q factor / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 390, AP2018-157, pp. 33-38, Jan. 2019. | |
| Paper # | AP2018-157 | |
| Date of Issue | 2019-01-10 (AP, WPT) | |
| ISSN | 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 | AP2018-157 WPT2018-57 |
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| Conference Information | |
| Committee | WPT AP |
| Conference Date | 2019-01-17 - 2019-01-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Toyota Automobile Museum |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless transmission technology, Radio propagation, Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2019-01-WPT-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Quality factor of electrically small antennas and their broadbanding |
| Sub Title (in English) | |
| Keyword(1) | small antenna |
| Keyword(2) | bandwidth enhancement |
| Keyword(3) | equivalent circuit |
| Keyword(4) | maximum bandwidth |
| Keyword(5) | multi-mode |
| Keyword(6) | planar antenna |
| Keyword(7) | Q factor |
| Keyword(8) | |
| 1st Author's Name | Keisuke Noguchi |
| 1st Author's Affiliation | Kanazawa Institute of Technology (KIT) |
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| Speaker | Author-1 |
| Date Time | 2019-01-17 14:25:00 |
| Presentation Time | 50 minutes |
| Registration for | AP |
| Paper # | AP2018-157, WPT2018-57 |
| Volume (vol) | vol.118 |
| Number (no) | no.390(AP), no.391(WPT) |
| Page | pp.33-38(AP), pp.19-24(WPT) |
| #Pages | 6 |
| Date of Issue | 2019-01-10 (AP, WPT) |
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