Paper Abstract and Keywords |
Presentation |
2011-10-14 16:25
Uncertainty of Radiation Efficiency Measurement Based on Wheeler Method Using Two Novel Estimations for Reflection Coefficients Yohei Kobayashi, Nozomu Ishii (Niigata Univ.) AP2011-88 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Several mesurement techniques using $180^\circ$ 3dB hybrid coupler or power divider were proposed to reduce the uncertainty of measurement of the reflection coefficients. We have proposed how to use sliding shorts as reference standards in these measurement techniques to measure arbitrary reflection coefficients. In addition, these proposed techniques are applied to the measurement of the radiation efficiency based on the Wheeler method for the small antenna, and it is experimentally confirmed that the uncertainties are reduced. On the other hand, it would appear that the uncertainty can be reduced by inserting an attenuator between vector network analyzer and the antenna to make the reflection coefficient smaller than 1. In this report, we discuss the differences of uncertainty of radiation efficiency of the monopole antenna by our proposed techniques. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
180deg 3dB hybrid coupler / power divider / sliding short / Wheeler method / uncertainty / / / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 231, AP2011-88, pp. 67-72, Oct. 2011. |
Paper # |
AP2011-88 |
Date of Issue |
2011-10-06 (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) |
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AP2011-88 |
Conference Information |
Committee |
AP WPT |
Conference Date |
2011-10-12 - 2011-10-14 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kanagawa Womens Center |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Antennas and Propagation |
Paper Information |
Registration To |
AP |
Conference Code |
2011-10-AP-WPT |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Uncertainty of Radiation Efficiency Measurement Based on Wheeler Method Using Two Novel Estimations for Reflection Coefficients |
Sub Title (in English) |
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Keyword(1) |
180deg 3dB hybrid coupler |
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power divider |
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sliding short |
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Wheeler method |
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uncertainty |
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1st Author's Name |
Yohei Kobayashi |
1st Author's Affiliation |
Niigata University (Niigata Univ.) |
2nd Author's Name |
Nozomu Ishii |
2nd Author's Affiliation |
Niigata University (Niigata Univ.) |
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Speaker |
Author-1 |
Date Time |
2011-10-14 16:25:00 |
Presentation Time |
25 minutes |
Registration for |
AP |
Paper # |
AP2011-88 |
Volume (vol) |
vol.111 |
Number (no) |
no.231 |
Page |
pp.67-72 |
#Pages |
6 |
Date of Issue |
2011-10-06 (AP) |
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