Paper Abstract and Keywords |
Presentation |
2012-06-22 13:35
Theoretical Study of the Calibration Distance for Parabolic Antennas used in EMI Measurements Katsumi Fujii, Makoto Sakasai, Akira Sugiura (NICT) EMCJ2012-26 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
A parabolic antenna incorporating a broadband feed antenna is often used for low-level and broadband EMI measurements such as spurious measurements of radars. Accordingly, calibration of parabolic measuring antennas is requested to determine their gain. In this connection, the present paper theoretically investigates the separation distance between transmit and receive antennas required for accurate calibration of parabolic antennas. Numerical simulation is carried out using the physical optics approximation method (PO). It evidently shows that, if the feed antenna is set at the focal point of the reflector, calibration with an antenna separation greater than R=2D^2/λ can yield the antenna gain with an error less than 0.1 dB. However, if the feed antenna is away from the focal point, calibration error remarkably increases and a larger antenna separation is required. Furthermore, a commercially-available parabolic antenna using a log periodic dipole array (LPDA) as a feed is numerically studied to determine the separation distance required for the frequency range from 3 GHz to 18 GHz. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Parbolic antenna / Antenna gain / Calibration / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 112, no. 100, EMCJ2012-26, pp. 35-40, June 2012. |
Paper # |
EMCJ2012-26 |
Date of Issue |
2012-06-15 (EMCJ) |
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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EMCJ2012-26 |
Conference Information |
Committee |
EMCJ IEE-EMC |
Conference Date |
2012-06-22 - 2012-06-22 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Osaka Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
EMC |
Paper Information |
Registration To |
EMCJ |
Conference Code |
2012-06-EMCJ-EMC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Theoretical Study of the Calibration Distance for Parabolic Antennas used in EMI Measurements |
Sub Title (in English) |
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Keyword(1) |
Parbolic antenna |
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Antenna gain |
Keyword(3) |
Calibration |
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1st Author's Name |
Katsumi Fujii |
1st Author's Affiliation |
NICT (NICT) |
2nd Author's Name |
Makoto Sakasai |
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NICT (NICT) |
3rd Author's Name |
Akira Sugiura |
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NICT (NICT) |
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Speaker |
Author-1 |
Date Time |
2012-06-22 13:35:00 |
Presentation Time |
25 minutes |
Registration for |
EMCJ |
Paper # |
EMCJ2012-26 |
Volume (vol) |
vol.112 |
Number (no) |
no.100 |
Page |
pp.35-40 |
#Pages |
6 |
Date of Issue |
2012-06-15 (EMCJ) |
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