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| Presentation | 2007-05-22 11:15 Suspended Coupled Balun for Microwave Band Using Multi-Layer Liquid Crystal Polymer Substrate Futoshi Takeuchi, Suguru Kameda, Hiroyuki Nakase, Tadashi Takagi, Kazuo Tsubouchi (Tohoku Univ.)  MW2007-24 Link to ES Tech. Rep. Archives: MW2007-24 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper presents a suitable structure of a balun using a multi-layer substrate. In a conventional planar balun, it is necessary to narrow the space between the coupled lines for obtaining wideband characteristics, but the space between coupled lines has constraints of the production process. Since coupled line of the proposed balun is a suspended line using the multi-layer wiring structure, the coupling factor can be large without constraints of the production process. The wider bandwidth characteristics can be obtained easily. The proposed balun has the perfect symmetrical circuit to realize wideband and good balance characteristics at high frequency. We fabricated the balun using Liquid Crystal Polymer (LCP) substrate for the 5GHz band. From the measurement result, the frequency range of 1dB increase from the minimum value of the transmission loss is 3.23 - 6.15GHz (bandwidth of 2.92GHz, fractional bandwidth of 58.4%, and center frequency of 5GHz), the amplitude differences were within 0+-1dB and phase differences were 180[deg.]+-10[deg.] over the frequency range of 3.23 - 6.15GHz respectively. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Balun / Multi-Layer Substrate / Liquid Crystal Polymer / Microwave / 5GHz / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 49, MW2007-24, pp. 67-72, May 2007. | |
| Paper # | MW2007-24 | |
| Date of Issue | 2007-05-14 (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 | MW2007-24 Link to ES Tech. Rep. Archives: MW2007-24 |
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| Conference Information | |
| Committee | MW |
| Conference Date | 2007-05-21 - 2007-05-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | University of Hyogo |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave Technologies |
| Paper Information | |
| Registration To | MW |
| Conference Code | 2007-05-MW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Suspended Coupled Balun for Microwave Band Using Multi-Layer Liquid Crystal Polymer Substrate |
| Sub Title (in English) | |
| Keyword(1) | Balun |
| Keyword(2) | Multi-Layer Substrate |
| Keyword(3) | Liquid Crystal Polymer |
| Keyword(4) | Microwave |
| Keyword(5) | 5GHz |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Futoshi Takeuchi |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Suguru Kameda |
| 2nd Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 3rd Author's Name | Hiroyuki Nakase |
| 3rd Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 4th Author's Name | Tadashi Takagi |
| 4th Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 5th Author's Name | Kazuo Tsubouchi |
| 5th Author's Affiliation | Tohoku University (Tohoku Univ.) |
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| Speaker | Author-1 |
| Date Time | 2007-05-22 11:15:00 |
| Presentation Time | 25 minutes |
| Registration for | MW |
| Paper # | MW2007-24 |
| Volume (vol) | vol.107 |
| Number (no) | no.49 |
| Page | pp.67-72 |
| #Pages | 6 |
| Date of Issue | 2007-05-14 (MW) |
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