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| Presentation | 2010-01-21 16:10 Total radiated power (TRP) measurement system for small radio terminals using a spheroidal coupler combined with a variable matching circuit Takashi Kawamura, Aya Yamamoto, Toru Sakuma, Yukiyasu Kimura, Yasuhiko Nago, Tasuku Teshirogi (Anritsu)  AP2009-168 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Recently “antenna integrated radios” have been increasing rapidly which do not have terminals for monitoring Tx output power due to constraints on size and cost and requirements for multiple frequency use and multiple antennas. These radio terminals must be tested using radiation measurements where performance is expressed as total radiated power (TRP) and equivalent isotropically radiated power (e.i.r.p.). The existing standard method of measuring radiated power from equipment under test (EUT) is spherical scanning method in a radio anechoic chamber. This method , however, has serious problems such as a large-scale facility, long measurement time, and low sensitivity that makes it difficult to measure low-level spurious radiation. In order to solve these difficulties, we previously proposed displacement method using a spheroidal coupler. This provides a compact facility, short measurement time, real time measurement, and very high sensitivity. In this report, we propose a new method measuring TRP using a variable matching circuit that improves the displacement method. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | total radiated power / TRP / small radio terminals / spheroidal coupler / displacement method / variable matching circuit / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 372, AP2009-168, pp. 75-80, Jan. 2010. | |
| Paper # | AP2009-168 | |
| Date of Issue | 2010-01-14 (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 | AP2009-168 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2010-01-21 - 2010-01-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yamaguchi University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | AP |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2010-01-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Total radiated power (TRP) measurement system for small radio terminals using a spheroidal coupler combined with a variable matching circuit |
| Sub Title (in English) | |
| Keyword(1) | total radiated power |
| Keyword(2) | TRP |
| Keyword(3) | small radio terminals |
| Keyword(4) | spheroidal coupler |
| Keyword(5) | displacement method |
| Keyword(6) | variable matching circuit |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Takashi Kawamura |
| 1st Author's Affiliation | Anritsu Corporation (Anritsu) |
| 2nd Author's Name | Aya Yamamoto |
| 2nd Author's Affiliation | Anritsu Corporation (Anritsu) |
| 3rd Author's Name | Toru Sakuma |
| 3rd Author's Affiliation | Anritsu Corporation (Anritsu) |
| 4th Author's Name | Yukiyasu Kimura |
| 4th Author's Affiliation | Anritsu Corporation (Anritsu) |
| 5th Author's Name | Yasuhiko Nago |
| 5th Author's Affiliation | Anritsu Corporation (Anritsu) |
| 6th Author's Name | Tasuku Teshirogi |
| 6th Author's Affiliation | Anritsu Corporation (Anritsu) |
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| Speaker | Author-1 |
| Date Time | 2010-01-21 16:10:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2009-168 |
| Volume (vol) | vol.109 |
| Number (no) | no.372 |
| Page | pp.75-80 |
| #Pages | 6 |
| Date of Issue | 2010-01-14 (AP) |
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