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| Presentation | 2012-01-10 15:15 Radiation Efficiency Measurement Based on Wheeler Method Using 90-degree 3dB Hybrid Coupler and Sliding Short Nozomu Ishii, Yohei Kobayashi (Niigata Univ.)  AP2011-139 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A measurement technique of arbitrary reflection coefficient using 90-degree 3dB hybrid coupler and sliding short is proposed to reduce the uncertainty of the measurement. The measurement system is the same as that with 180-degree 3dB hybrid coupler and sliding short proposed by us. In principle, the reflection coefficients of reference standard and device under test (DUT) are summed up in the transmission coefficient of the measurement system, the reflection coefficient of DUT can be extracted by using the sliding short as the reference standard. This technique can be applicable the measurement of the radiation efficiency of the antenna based on the Wheeler method. To evaluate the uncertainty of efficiency measurement leads to the validity of proposed technique. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | 90-degree 3dB hybrid coupler / Sliding short / Wheeler method / Radiation efficiency / Uncertainty / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 372, AP2011-139, pp. 27-28, Jan. 2012. | |
| Paper # | AP2011-139 | |
| Date of Issue | 2012-01-03 (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 | AP2011-139 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2012-01-10 - 2012-01-10 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tenbusu Naha |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | 2012 Korea-Japan Antennas and Propagation Workshop |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2012-01-AP |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Radiation Efficiency Measurement Based on Wheeler Method Using 90-degree 3dB Hybrid Coupler and Sliding Short |
| Sub Title (in English) | |
| Keyword(1) | 90-degree 3dB hybrid coupler |
| Keyword(2) | Sliding short |
| Keyword(3) | Wheeler method |
| Keyword(4) | Radiation efficiency |
| Keyword(5) | Uncertainty |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Nozomu Ishii |
| 1st Author's Affiliation | Niigata University (Niigata Univ.) |
| 2nd Author's Name | Yohei Kobayashi |
| 2nd Author's Affiliation | Niigata University (Niigata Univ.) |
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| Speaker | Author-1 |
| Date Time | 2012-01-10 15:15:00 |
| Presentation Time | 15 minutes |
| Registration for | AP |
| Paper # | AP2011-139 |
| Volume (vol) | vol.111 |
| Number (no) | no.372 |
| Page | pp.27-28 |
| #Pages | 2 |
| Date of Issue | 2012-01-03 (AP) |
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