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Paper Abstract and Keywords
Presentation 2017-12-20 09:20
Consideration of Multi-Pole for Electromagnetically-Coupled Half-Wavelength Resonator Filters
Ayaka Shimizu, Toshio Ishizaki (Ryukoku Univ.) MW2017-153
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, further miniaturization and high performance of a filter for small base station are required. By forming the attenuation pole near the passband of the filter, attenuation outside the pass-band becomes steep, and high selectivity can be obtained. As a result, the necessary attenuation can be obtained with a smaller number of stages, and the filter can be downsized. In this report, the authors investigate the characteristics of two-stage and three-stage filters with half-wavelength resonators that generates attenuation poles using electromagnetic coupling. We also study the spurious characteristics of the filter. Usually, in the half-wavelength resonator filter, the closest harmonic spurious is formed at a frequency twice the center frequency, but by loading capacitance at both ends of the coupled line and shortening the line length, the spurious can be suppressed and downsized. In this research, we investigate the characteristics of a half-wavelength resonator multistage filter using a parallel coupled line and investigate how the attenuation pole frequency varies depending on the capacitance connected between the terminals of the coupled resonator. It was confirmed by circuit simulation.
Keyword (in Japanese) (See Japanese page) 
(in English) Filters with Attenuation Poles / Half-Wavelength / Electromagnetic Coupling / Attenuation Frequencies / Spurious Responses / Base-Station / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 366, MW2017-153, pp. 65-70, Dec. 2017.
Paper # MW2017-153 
Date of Issue 2017-12-12 (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 2017-12-19 - 2017-12-20 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To MW 
Conference Code 2017-12-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Consideration of Multi-Pole 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) Spurious Responses  
Keyword(6) Base-Station  
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 2017-12-20 09:20:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2017-153 
Volume (vol) vol.117 
Number (no) no.366 
Page pp.65-70 
#Pages 6 
Date of Issue 2017-12-12 (MW) 

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