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Paper Abstract and Keywords
Presentation 2016-12-16 10:00
Improved Extraction Method for Coupling-Matrix of Microstrip Bandpass Filters with Lossy Input/Output Lines
Ryo Tomita, Masataka Ohira, Zhewang Ma, Xiaolong Wang (Saitama Univ.) MW2016-157 Link to ES Tech. Rep. Archives: MW2016-157
Abstract (in Japanese) (See Japanese page) 
(in English) A coupling matrix extraction technique is very useful for designs and tunings of microwave bandpass filters. In recent years, a coupling matrix extraction method using a vector fitting approach has been proposed. However, it has difficulties that unloaded Q factors of resonators cannot be accurately extracted from planer filters with lossy feeding lines, and also that a frequency-dependent direct source/load coupling cannot be extracted with conventional fitting approach. To solve these problems, this paper proposes a de-embedding method for lossy feeding lines and an improved vector fitting technique so that frequency-dependent direct source/load coupling can be evaluated. As an example, we extract coupling matrices from measurement and EM simulation results of microstrip bandpass filters, which validates the effectiveness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Bandpass filters / coupling matrix / vector fitting / unloaded Q factors / de-embedding / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 363, MW2016-157, pp. 141-146, Dec. 2016.
Paper # MW2016-157 
Date of Issue 2016-12-08 (MW) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 MW2016-157 Link to ES Tech. Rep. Archives: MW2016-157

Conference Information
Committee MW  
Conference Date 2016-12-15 - 2016-12-16 
Place (in Japanese) (See Japanese page) 
Place (in English) National Defense Academy 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Students Session / Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2016-12-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improved Extraction Method for Coupling-Matrix of Microstrip Bandpass Filters with Lossy Input/Output Lines 
Sub Title (in English)  
Keyword(1) Bandpass filters  
Keyword(2) coupling matrix  
Keyword(3) vector fitting  
Keyword(4) unloaded Q factors  
Keyword(5) de-embedding  
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1st Author's Name Ryo Tomita  
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 2016-12-16 10:00:00 
Presentation Time 20 minutes 
Registration for MW 
Paper # MW2016-157 
Volume (vol) vol.116 
Number (no) no.363 
Page pp.141-146 
#Pages
Date of Issue 2016-12-08 (MW) 


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