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Paper Abstract and Keywords
Presentation 2016-12-16 11:30
Design Method of Attenuation Poles for Electromagnetically-Coupled Half-Wavelength Resonator Filters
Ayaka Shimizu, Toshio Ishizaki (Ryukoku Univ.) MW2016-161
Abstract (in Japanese) (See Japanese page) 
(in English) Usually, duplexers used in base station consist of transmitting and receiving filters, both of which are 10- to 15-pole filters, respectively. However, volume of the duplexer occupies about half of small base station. Thus, miniaturization of the duplexer is strongly expected. By creating attenuation poles near passband, out-of-band attenuation becomes steep and high selectivity can be obtained. As a result, filter with a fewer number of pole can satisfy a required attenuation specification. Thus, filters become compact. The purpose of this study is to establish an analytical design method of attenuation pole for half-wavelength parallel-coupled resonator filters. It was confirmed by circuit simulation how attenuation pole frequencies were changed by respective connected capacitances between terminals of coupled resonators. Three attenuation poles were generated outside the passband and the frequencies of poles were controlled, successfully. Circuit equation of the filter was derived and attenuation pole frequencies were designed analytically.
Keyword (in Japanese) (See Japanese page) 
(in English) Filters with Attenuation Poles / Half-Wavelength / Electromagnetic Coupling / Attenuation Frequencies / Base-Station / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 363, MW2016-161, pp. 165-170, Dec. 2016.
Paper # MW2016-161 
Date of Issue 2016-12-08 (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)
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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) Design Method of Attenuation Poles for Electromagnetically-Coupled Half-Wavelength Resonator Filters 
Sub Title (in English)  
Keyword(1) Filters with Attenuation Poles  
Keyword(2) Half-Wavelength  
Keyword(3) Electromagnetic Coupling  
Keyword(4) Attenuation Frequencies  
Keyword(5) Base-Station  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Ayaka Shimizu  
1st Author's Affiliation Ryukoku University (Ryukoku Univ.)
2nd Author's Name Toshio Ishizaki  
2nd Author's Affiliation Ryukoku University (Ryukoku Univ.)
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Speaker Author-1 
Date Time 2016-12-16 11:30:00 
Presentation Time 20 minutes 
Registration for MW 
Paper # MW2016-161 
Volume (vol) vol.116 
Number (no) no.363 
Page pp.165-170 
#Pages 6 
Date of Issue 2016-12-08 (MW) 

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