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Paper Abstract and Keywords
Presentation 2011-10-21 11:20
Miniaturization of Cutoff Waveguide Filter Using Planar Resonators with Transmission Zeros
Takaaki Matsumoto, Masataka Ohira, Zhewang Ma (Saitama Univ.), Hiroyuki Deguchi, Mikio Tsuji (Doshisha Univ.) MW2011-105 Link to ES Tech. Rep. Archives: MW2011-105
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a new compact cutoff waveguide filter using planar resonators for both the generation of multiple transmission zeros and the filter miniaturization. In a conventional waveguide filter consisting of planar resonators called frequency selective surface (FSS), a quarter-wavelength rectangular waveguide is needed for inverter circuits between the resonators. In order to reduce the length of the inverter section, the proposed waveguide filter is constructed by arranging new planar resonators successively in the cutoff waveguide at appropriate intervals. The planar resonator has a resonance at a center frequency in passband and two antiresonances at lower and upper stopbands, thereby providing multiple transmission zeros. As a design example, three-stage bandpass filter is demonstrated at X band. As a result, the size of the designed filter is reduced to about 30% in volume, compared to the conventional FSS-loaded filters. In addition, the designed filter realizes high skirt selectivity due to the transmission zeros located near the passband. The effectiveness of the design results is validated by numerical calculations.
Keyword (in Japanese) (See Japanese page) 
(in English) Cutoff waveguide / Waveguide filter / Planar resonator / Transmission zeros / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 250, MW2011-105, pp. 107-112, Oct. 2011.
Paper # MW2011-105 
Date of Issue 2011-10-13 (MW) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 MW2011-105 Link to ES Tech. Rep. Archives: MW2011-105

Conference Information
Committee MW  
Conference Date 2011-10-20 - 2011-10-21 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Electro-Communications 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2011-10-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Miniaturization of Cutoff Waveguide Filter Using Planar Resonators with Transmission Zeros 
Sub Title (in English)  
Keyword(1) Cutoff waveguide  
Keyword(2) Waveguide filter  
Keyword(3) Planar resonator  
Keyword(4) Transmission zeros  
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1st Author's Name Takaaki Matsumoto  
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 Hiroyuki Deguchi  
4th Author's Affiliation Doshisha University (Doshisha Univ.)
5th Author's Name Mikio Tsuji  
5th Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2011-10-21 11:20:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2011-105 
Volume (vol) vol.111 
Number (no) no.250 
Page pp.107-112 
#Pages
Date of Issue 2011-10-13 (MW) 


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