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| Presentation | 2007-04-19 14:55 Electrical Volume of Small Antenna -- Current Distribution and Equivalent Sphere Radius -- Hiroyuki Arai (Yokohama Natl. Univ.)  AP2007-9 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This report proposes an equivalent radius of Chu’s sphere by multiplying the maximum current strength normalized by feed point current with the radius of sphere surrounding the antenna. 1W power input method is appropriate to examine the small antenna rather than 1V excitation, which are also presented in this report. The Chu’s sphere is extended to its applicable electrical size more than the one-tenth wavelength for the evaluation of small antennas. The electrically occupied volume for the antenna working space is defined by this equivalent sphere radius, and the antenna characteristics are examined by introducing unloaded Q and directivity of tested antennas. The parameter optimization for the same shaped antenna is also discussed by using the equivalent radius. For examples, H-shaped and inverted F-shaped antennas are examined for a reference of half wavelength dipole. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Small antenna / Electrical volume / Unloaded Q / Miniaturizing factor / Equivalent sphere / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 3, AP2007-9, pp. 49-52, April 2007. | |
| Paper # | AP2007-9 | |
| Date of Issue | 2007-04-12 (AP) | |
| 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 | AP2007-9 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2007-04-19 - 2007-04-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kwansei Gakuin Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | etc. |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2007-04-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Electrical Volume of Small Antenna |
| Sub Title (in English) | Current Distribution and Equivalent Sphere Radius |
| Keyword(1) | Small antenna |
| Keyword(2) | Electrical volume |
| Keyword(3) | Unloaded Q |
| Keyword(4) | Miniaturizing factor |
| Keyword(5) | Equivalent sphere |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hiroyuki Arai |
| 1st Author's Affiliation | Yokohama National University (Yokohama Natl. Univ.) |
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| Speaker | Author-1 |
| Date Time | 2007-04-19 14:55:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2007-9 |
| Volume (vol) | vol.107 |
| Number (no) | no.3 |
| Page | pp.49-52 |
| #Pages | 4 |
| Date of Issue | 2007-04-12 (AP) |
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