Paper Abstract and Keywords |
Presentation |
2019-01-18 14:50
Design of Microstrip Tunable Filtering Antenna with Constant Absolute Bandwidth Tomoyasu Soma, Masataka Ohira, Zhewang Ma (Saitama Univ.) ED2018-87 MW2018-154 Link to ES Tech. Rep. Archives: ED2018-87 MW2018-154 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
A tunable antenna that can change its resonant frequency electronically is one of promising components for future wireless communications. Conventional tunable antennas have problems that the return loss characteristic is worse, and the frequency bandwidth is narrower as the resonant frequency is tuned with a varactor diode. To overcome these disadvantages, the co-design approach of tunable bandpass filter and antenna have been applied to a varactor-tuned antenna. However, a constant frequency bandwidth has not been realized yet with a tunable filtering antenna, since frequency characteristics of circuit parameters, such as coupling coefficients, external Q factor, and radiation Q factor, do not meet their requirements determined from a well-established filter theory. This paper proposes a new microstrip tunable filtering antenna having a constant frequency bandwidth, and also presents its design method. As an example, we design a third-order tunable filtering antenna under design specifications of a tuning center-frequency range 1.94-2.16 GHz and a constant frequency bandwidth 60 MHz. The effectiveness of the proposed tunable filtering antenna is verified through fabrication and measurement. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
tunable antenna / filtering antenna / varactor diode / absolute frequency bandwidth / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 118, no. 403, MW2018-154, pp. 97-102, Jan. 2019. |
Paper # |
MW2018-154 |
Date of Issue |
2019-01-10 (ED, MW) |
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 |
ED2018-87 MW2018-154 Link to ES Tech. Rep. Archives: ED2018-87 MW2018-154 |
Conference Information |
Committee |
MW ED |
Conference Date |
2019-01-17 - 2019-01-18 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Hitachi, Central Research Lab. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Compound semiconductor, High speed and High frequency devices/Microwave technologies |
Paper Information |
Registration To |
MW |
Conference Code |
2019-01-MW-ED |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Design of Microstrip Tunable Filtering Antenna with Constant Absolute Bandwidth |
Sub Title (in English) |
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Keyword(1) |
tunable antenna |
Keyword(2) |
filtering antenna |
Keyword(3) |
varactor diode |
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absolute frequency bandwidth |
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1st Author's Name |
Tomoyasu Soma |
1st Author's Affiliation |
Saitama University (Saitama Univ.) |
2nd Author's Name |
Masataka Ohira |
2nd Author's Affiliation |
Saitama University (Saitama Univ.) |
3rd Author's Name |
Zhewang Ma |
3rd Author's Affiliation |
Saitama University (Saitama Univ.) |
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Speaker |
Author-1 |
Date Time |
2019-01-18 14:50:00 |
Presentation Time |
25 minutes |
Registration for |
MW |
Paper # |
ED2018-87, MW2018-154 |
Volume (vol) |
vol.118 |
Number (no) |
no.402(ED), no.403(MW) |
Page |
pp.97-102 |
#Pages |
6 |
Date of Issue |
2019-01-10 (ED, MW) |
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