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Paper Abstract and Keywords
Presentation 2010-04-23 14:30
Experimental study of bandwidth tunable filters using Π-shaped waveguides
Naoto Sekiya, Hiroyuki Harada, Yasuhiko Nakagawa (Yamanashi Univ.), Shigetoshi Ohshima (Yamagata Univ.) SCE2010-7 MW2010-7
Abstract (in Japanese) (See Japanese page) 
(in English) We have developed a method for tuning the bandwidth of microstrip filter. Several -shaped waveguides are placed between the resonators, and the bandwidth is tuned in discrete steps by changing the switch states of the waveguides, which changes the coupling coefficient between the resonators. The filter contains 3-pole half-wavelength straight-line resonators and four -shaped waveguides for bandwidth tuning. It also has several electrical pads distributed around the feed lines for trimming after tuning. The filter achieves a measured 2.4:1 tunable passband ratio. The measurement results showed that the -shaped waveguides are effective in tuning the bandwidth.
Keyword (in Japanese) (See Japanese page) 
(in English) bandwidth / tunable / microstrip line / trimming / cognitive radio / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 14, MW2010-7, pp. 33-37, April 2010.
Paper # MW2010-7 
Date of Issue 2010-04-16 (SCE, 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)
Download PDF SCE2010-7 MW2010-7

Conference Information
Committee SCE MW  
Conference Date 2010-04-23 - 2010-04-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MW 
Conference Code 2010-04-SCE-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental study of bandwidth tunable filters using Π-shaped waveguides 
Sub Title (in English)  
Keyword(1) bandwidth  
Keyword(2) tunable  
Keyword(3) microstrip line  
Keyword(4) trimming  
Keyword(5) cognitive radio  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Naoto Sekiya  
1st Author's Affiliation University of Yamanashi (Yamanashi Univ.)
2nd Author's Name Hiroyuki Harada  
2nd Author's Affiliation University of Yamanashi (Yamanashi Univ.)
3rd Author's Name Yasuhiko Nakagawa  
3rd Author's Affiliation University of Yamanashi (Yamanashi Univ.)
4th Author's Name Shigetoshi Ohshima  
4th Author's Affiliation Yamagata University (Yamagata Univ.)
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Speaker Author-1 
Date Time 2010-04-23 14:30:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # SCE2010-7, MW2010-7 
Volume (vol) vol.110 
Number (no) no.13(SCE), no.14(MW) 
Page pp.33-37 
#Pages 5 
Date of Issue 2010-04-16 (SCE, MW) 

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