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| Presentation | 2018-01-26 13:00 Design of fully-canonical Cul-de-Sac coupling microstrip bandstop filter Makoto Kanomata, Masataka Ohira, Zhewang Ma, Xiaolong Wang (Saitama Univ.)  ED2017-101 MW2017-170 Link to ES Tech. Rep. Archives: ED2017-101 MW2017-170 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In the design of bandstop filter (BSF), a circuit synthesis theory of generalized Chebyshev function offers an equiripple response in stopband in addition to arbitrary reflection-zero (RZ) frequencies in passband. In order to realize such a bandstop response with a physical structure, using a Cul-de-Sac coupling makes the filter size more compact than using a conventional cascade connection. Such a coupling topology has been realized with a waveguide filter and a suspended-stripline filter with a complicated resonator arrangement. No simple single-layer microstrip BSF structure for Cul-de-Sac coupling configuration has been presented yet. This paper proposes a new fully-canonical Cul-de-Sac coupling microstrip BSF. In order to design this filter, a coupling matrix is obtained by a circuit synthesis method, and the structure is efficiently designed with the help of a coupling-matrix extraction method. As an example, we design a third-order Cul-de-Sac coupling BSF with 2-GHz center frequency, 2% fractional bandwidth in stopband, and three RZs located at near the stopband, resulting in very high skirt selectivity. Finally, the validity of the proposed structure is verified by the comparison between the simulated and measured results. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Bandstop filters / reflection zeros / fully-canonical Cul-de-Sac doupling / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 413, MW2017-170, pp. 41-46, Jan. 2018. | |
| Paper # | MW2017-170 | |
| Date of Issue | 2018-01-18 (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 | ED2017-101 MW2017-170 Link to ES Tech. Rep. Archives: ED2017-101 MW2017-170 |
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| Conference Information | |
| Committee | ED MW |
| Conference Date | 2018-01-25 - 2018-01-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| 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 | 2018-01-ED-MW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of fully-canonical Cul-de-Sac coupling microstrip bandstop filter |
| Sub Title (in English) | |
| Keyword(1) | Bandstop filters |
| Keyword(2) | reflection zeros |
| Keyword(3) | fully-canonical Cul-de-Sac doupling |
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| 1st Author's Name | Makoto Kanomata |
| 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.) |
| 4th Author's Name | Xiaolong Wang |
| 4th Author's Affiliation | Saitama University (Saitama Univ.) |
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| Speaker | Author-1 |
| Date Time | 2018-01-26 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | MW |
| Paper # | ED2017-101, MW2017-170 |
| Volume (vol) | vol.117 |
| Number (no) | no.412(ED), no.413(MW) |
| Page | pp.41-46 |
| #Pages | 6 |
| Date of Issue | 2018-01-18 (ED, MW) |
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