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| Presentation | 2012-07-27 14:50 Theoretical Design of UWB Bandpass Filter with Attenuation Poles Chun-Ping Chen, Junya Oda, Yosuke Kamiji, Tetsuo Anada (Kanagawa Univ.), Zhewang Ma (Saitama Univ.)  MW2012-56 OPE2012-49 EST2012-38 MWP2012-37 Link to ES Tech. Rep. Archives: MW2012-56 OPE2012-49 EST2012-38 MWP2012-37 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A quasi-elliptical-function-based design methodology is proposed for ultra-wideband(UWB) filters consisting of stepped-impedance resonators (SIRs) based on parallel-coupled three-line, short-circuited stubs and two-section stepped-impedance open-ended stubs. Firstly, UWB filters composed of merely SIRs and short-circuited stubs are synthesized in terms of a transmission-line-theory-based chebyshev-filter-synthesis technique. Then, two-section open-circuited stubs are theoretically designed to replace the short-circuited ones. Accordingly, a pair of controllable attenuation poles is introduced to significantly improve the selectivity of the filter. Furthermore, the influence of the location of the loaded stubs to the filter characteristics is investigated to show that good out-band characteristics are obtained when the open-ended-stubs are loaded at input/-output- ports, whereas the load of the stubs in SIR brings in spurious near the introduced transmission zeros. Theoretical simulation also shows that the filter with a short-circuited stub and an open-circuited stub exhibits better out-band characteristics than that with two open-circuited stubs. As an example, a UWB BPF with a fractional bandwidth (FBW) of 110% (BW: 3.1~10.6GHz) is then synthesized, simulated, fabricated and measured. The measured frequency responses of the UWB filter compare very well with the predicted ones and successfully satisfy outdoor specifications of FCC, which validates the correctness and effectiveness of the proposed technique. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Ultra-wideband filter / UWB / Synthesis theory / Quasi-elliptical function filter / Transmission zero / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 157, EST2012-38, pp. 179-184, July 2012. | |
| Paper # | EST2012-38 | |
| Date of Issue | 2012-07-19 (MW, OPE, EST, MWP) | |
| 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 | MW2012-56 OPE2012-49 EST2012-38 MWP2012-37 Link to ES Tech. Rep. Archives: MW2012-56 OPE2012-49 EST2012-38 MWP2012-37 |
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| Conference Information | |
| Committee | MWP OPE MW EMT EST IEE-EMT |
| Conference Date | 2012-07-26 - 2012-07-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | EST |
| Conference Code | 2012-07-MWP-OPE-MW-EMT-EST-EMT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Theoretical Design of UWB Bandpass Filter with Attenuation Poles |
| Sub Title (in English) | |
| Keyword(1) | Ultra-wideband filter |
| Keyword(2) | UWB |
| Keyword(3) | Synthesis theory |
| Keyword(4) | Quasi-elliptical function filter |
| Keyword(5) | Transmission zero |
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| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Chun-Ping Chen |
| 1st Author's Affiliation | Kanagawa University (Kanagawa Univ.) |
| 2nd Author's Name | Junya Oda |
| 2nd Author's Affiliation | Kanagawa University (Kanagawa Univ.) |
| 3rd Author's Name | Yosuke Kamiji |
| 3rd Author's Affiliation | Kanagawa University (Kanagawa Univ.) |
| 4th Author's Name | Tetsuo Anada |
| 4th Author's Affiliation | Kanagawa University (Kanagawa Univ.) |
| 5th Author's Name | Zhewang Ma |
| 5th Author's Affiliation | Saitama University (Saitama Univ.) |
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| Speaker | Author-1 |
| Date Time | 2012-07-27 14:50:00 |
| Presentation Time | 25 minutes |
| Registration for | EST |
| Paper # | MW2012-56, OPE2012-49, EST2012-38, MWP2012-37 |
| Volume (vol) | vol.112 |
| Number (no) | no.155(MW), no.156(OPE), no.157(EST), no.158(MWP) |
| Page | pp.179-184 |
| #Pages | 6 |
| Date of Issue | 2012-07-19 (MW, OPE, EST, MWP) |
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