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| Presentation | 2017-08-25 10:20 Far-Field Estimation of Antenna above the Earth by Source Reconstruction from Hemispherical Near-Field Yoshiki Sugimoto, Hiroyuki Arai (YNU)  AP2017-81 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Antenna measurements are done in an anechoic chamber, its characteristics regarded as equal to the characteristics in free space. Actual far-field pattern is different from the far-field in free space because it is affected by the earth. Therefore we need to estimate the far-field pattern when the antennas are placed above the earth from the measurement data in anechoic chamber for obtaining the practical antenna pattern. This report proposes the method of far-field estimation when the antenna above the earth using north hemispherical near-field data measured in anechoic chamber. We apply the inverse problem to the hemispherical near-field data in free space, it can be estimate surface current of the antenna accurately using forward reconstructed full-spherical near-field data from reconstructed surface current. The far-field when the antenna is placed on the earth of arbitrary electric constant is obtained by considering the image current of the reconstructed surface current. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Near-field measurement / Far-field estimation / Far-field on the earth / Inverse problem / Hemispherical measurement / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 181, AP2017-81, pp. 71-74, Aug. 2017. | |
| Paper # | AP2017-81 | |
| Date of Issue | 2017-08-17 (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 | AP2017-81 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2017-08-24 - 2017-08-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | National Institute of Technology, Hakodate College |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2017-08-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Far-Field Estimation of Antenna above the Earth by Source Reconstruction from Hemispherical Near-Field |
| Sub Title (in English) | |
| Keyword(1) | Near-field measurement |
| Keyword(2) | Far-field estimation |
| Keyword(3) | Far-field on the earth |
| Keyword(4) | Inverse problem |
| Keyword(5) | Hemispherical measurement |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yoshiki Sugimoto |
| 1st Author's Affiliation | Yokohama National University (YNU) |
| 2nd Author's Name | Hiroyuki Arai |
| 2nd Author's Affiliation | Yokohama National University (YNU) |
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| Speaker | Author-1 |
| Date Time | 2017-08-25 10:20:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2017-81 |
| Volume (vol) | vol.117 |
| Number (no) | no.181 |
| Page | pp.71-74 |
| #Pages | 4 |
| Date of Issue | 2017-08-17 (AP) |
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