Paper Abstract and Keywords |
Presentation |
2007-12-13 14:25
Bandwidth Enhancement of a Low-Profile Microstrip Antenna Electromagnetically Coupled with a Folded Inverted L-shaped Probe Kazuki Ikeda, Kenichi Kagoshima, Shigeki Obote (Ibaraki Univ.) AP2007-118 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
It is known that a method of bandwidth enhancement for a microstrip antenna (MSA) electromagnetically coupled with an inverted-L shaped probe. Previously, we have confirmed that its antenna can widen the bandwidth whose height of the patch more than 0.06 wave length compared to a conventional MSA fed by a coaxial probe. However, a radiation resistance of the inverted-L shaped probe decreases and cannot widen the MSA in low profile geometry whose height of the patch less than 0.06 wave length.
In this paper, we proposed a folded inverted L-shaped probe (FILP) and an MSA electromagnetically coupled with FILP (FILP fed MSA). The geometry of the FILP is folded an inverted-L shaped probe toward a ground plane and its radiation resistance increases 2.7 times compared to the inverted-L shaped probe when they resonated, so it obtains necessary radiation resistance in low profile. And it shows the FILP to adjust the impedance easily that it clarifies the relationship between impedance characteristics and structural parameters. First, for the FILP fed MSA, it shows the relationship between impedance characteristics and structural parameters which is the same as the FILP. Second, it confirms that useful range, form 0.02 wave length to 0.07 wave length, to widen the bandwidth of the FILP fed MSA compared to inverted-L shaped probe fed MSA. For the radiation patterns, the co-polarization is the same as the conventional coaxial probe fed MSA and the cross-polarization level is reduced. The last, analysis results are verified by an experimental results of the FILP fed MSA using dielectric substrates. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Microstrip antenna / Folded inverted L-shaped probe / Electroganetic coupling / Bandwidth enhancement / Low profile / / / |
Reference Info. |
IEICE Tech. Rep., vol. 107, no. 377, AP2007-118, pp. 19-24, Dec. 2007. |
Paper # |
AP2007-118 |
Date of Issue |
2007-12-06 (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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AP2007-118 |
Conference Information |
Committee |
AP |
Conference Date |
2007-12-13 - 2007-12-13 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kikai-Shinko-Kaikan Bldg. |
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(See Japanese page) |
Topics (in English) |
etc. |
Paper Information |
Registration To |
AP |
Conference Code |
2007-12-AP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Bandwidth Enhancement of a Low-Profile Microstrip Antenna Electromagnetically Coupled with a Folded Inverted L-shaped Probe |
Sub Title (in English) |
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Keyword(1) |
Microstrip antenna |
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Folded inverted L-shaped probe |
Keyword(3) |
Electroganetic coupling |
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Bandwidth enhancement |
Keyword(5) |
Low profile |
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1st Author's Name |
Kazuki Ikeda |
1st Author's Affiliation |
Ibaraki University (Ibaraki Univ.) |
2nd Author's Name |
Kenichi Kagoshima |
2nd Author's Affiliation |
Ibaraki University (Ibaraki Univ.) |
3rd Author's Name |
Shigeki Obote |
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Ibaraki University (Ibaraki Univ.) |
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Speaker |
Author-1 |
Date Time |
2007-12-13 14:25:00 |
Presentation Time |
25 minutes |
Registration for |
AP |
Paper # |
AP2007-118 |
Volume (vol) |
vol.107 |
Number (no) |
no.377 |
Page |
pp.19-24 |
#Pages |
6 |
Date of Issue |
2007-12-06 (AP) |
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