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Paper Abstract and Keywords
Presentation 2013-07-18 13:15
Theoretical Design of UWB Bandpass Filters Using Multistage Three-Line-Units
Junya Oda, Chun-Ping Chen, Katsuhiro Kamata, Takemasa Kato, Tetsuo Anada (Kanagawa Univ.), Zhewang Ma (Saitama Univ.) MW2013-51 OPE2013-20 EST2013-15 MWP2013-10
Abstract (in Japanese) (See Japanese page) 
(in English) An improved compound three-line unit, which can also be treated as the one constructed by inserting a 5/4-wavelength stepped-impedance resonator (SIR) into between parallel-coupled two lines, is proposed to implement wideband bandpass filters with high skirt-selectivity and out-of-band characteristics. A corresponding design/synthesis scheme is proposed after the mechanism of the proposed structures is investigated. Two pairs of transmission zeros are found in lower and upper stopbands due to the inserted 5/4-wavelength SIR, whereas a pair of spurious passbands are found near the transmission zeros farther from the passband. To suppress it, two open-circuited stubs, whose transmission zeros are the same frequencies of the spurious passbands, are used to replace the short-circuited ones loaded at input- and output- ports. Finally, a wideband filter with a bandwidth of 3-5GHz (FBW:50%) is designed to validate the effectiveness of the proposed structure and corresponding design scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultra-wideband (UWB) / Transmission zeros / Steep skirt selectivity / Out-of-band / Bandpass filter (BPF) / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 143, EST2013-15, pp. 33-38, July 2013.
Paper # EST2013-15 
Date of Issue 2013-07-11 (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 MW2013-51 OPE2013-20 EST2013-15 MWP2013-10

Conference Information
Committee EST MWP OPE MW EMT IEE-EMT  
Conference Date 2013-07-18 - 2013-07-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Wakkanai Synthesis Cultural Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave photonic technology etc. 
Paper Information
Registration To EST 
Conference Code 2013-07-EST-MWP-OPE-MW-EMT-EMT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Theoretical Design of UWB Bandpass Filters Using Multistage Three-Line-Units 
Sub Title (in English)  
Keyword(1) Ultra-wideband (UWB)  
Keyword(2) Transmission zeros  
Keyword(3) Steep skirt selectivity  
Keyword(4) Out-of-band  
Keyword(5) Bandpass filter (BPF)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Junya Oda  
1st Author's Affiliation Kanagawa University (Kanagawa Univ.)
2nd Author's Name Chun-Ping Chen  
2nd Author's Affiliation Kanagawa University (Kanagawa Univ.)
3rd Author's Name Katsuhiro Kamata  
3rd Author's Affiliation Kanagawa University (Kanagawa Univ.)
4th Author's Name Takemasa Kato  
4th Author's Affiliation Kanagawa University (Kanagawa Univ.)
5th Author's Name Tetsuo Anada  
5th Author's Affiliation Kanagawa University (Kanagawa Univ.)
6th Author's Name Zhewang Ma  
6th Author's Affiliation Saitama University (Saitama Univ.)
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Speaker Author-1 
Date Time 2013-07-18 13:15:00 
Presentation Time 25 minutes 
Registration for EST 
Paper # MW2013-51, OPE2013-20, EST2013-15, MWP2013-10 
Volume (vol) vol.113 
Number (no) no.141(MW), no.142(OPE), no.143(EST), no.144(MWP) 
Page pp.33-38 
#Pages 6 
Date of Issue 2013-07-11 (MW, OPE, EST, MWP) 

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