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Paper Abstract and Keywords
Presentation 2013-12-19 11:25
Broadband balun using an asymmetric coupled-line
Daiki Endo, Akira Saitou, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2013-155
Abstract (in Japanese) (See Japanese page) 
(in English) For baluns embedded in an antenna, even a single coupled line behaves as a balun, because c-mode signals are suppressed in favor of its high characteristic impedance. A broad band balun, of which band is between 0.6 and 8.0 GHz, is reported with a broadside coupled line. The objective of this paper is to design a broadband balun operating in higher frequencies. For the purpose, structures for via-pads to shift the differential ports on the identical layer were examined, as well as the line width was reduced. The pad’s differential characteristic impedance was simulated and optimized to be 50Ω by overlapping the via-pads. Baluns consisting of a 4-mm-long coupled line and the via pads, were designed and fabricated. Measured insertion loss was less than 2 dB between 1.0 GHz and 12.0 GHz.
Keyword (in Japanese) (See Japanese page) 
(in English) Wideband / Coupled line / Balun / Viapad / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 365, MW2013-155, pp. 23-28, Dec. 2013.
Paper # MW2013-155 
Date of Issue 2013-12-12 (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)
Download PDF MW2013-155

Conference Information
Committee MW  
Conference Date 2013-12-19 - 2013-12-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Saitama Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies / Student 
Paper Information
Registration To MW 
Conference Code 2013-12-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Broadband balun using an asymmetric coupled-line 
Sub Title (in English)  
Keyword(1) Wideband  
Keyword(2) Coupled line  
Keyword(3) Balun  
Keyword(4) Viapad  
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1st Author's Name Daiki Endo  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Akira Saitou  
2nd Author's Affiliation The University of Electro-Communications (UEC)
3rd Author's Name Ryo Ishikawa  
3rd Author's Affiliation The University of Electro-Communications (UEC)
4th Author's Name Kazuhiko Honjo  
4th Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2013-12-19 11:25:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2013-155 
Volume (vol) vol.113 
Number (no) no.365 
Page pp.23-28 
#Pages 6 
Date of Issue 2013-12-12 (MW) 

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