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Paper Abstract and Keywords
Presentation 2011-10-20 14:30
Design and Analysis of Tunable and Reduced-Size Branch-Line 3dB Hybrid
Satoshi Kondo (GNCT), Hajime Kondo (CHUO ELEC.), Hitoshi Ishida (GNCT) MW2011-94
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, the authors make a study on tunable and reduced-size branch-line 3dB hybrid. Tuning capacitors are employed to shorten transmission lines and to shift center frequency of the hybrid. The authors fabricated the proposed hybrid on PTFE substrates at 2GHz. In the measurements, while tuning capacitance changes from 1.3pF to 2.7pF, center frequency shifted from 2.4GHz to 1.8GHz, with -19.5dB return loss, ±0.3dB outputs amplitude difference, and 90±3° phase difference. These measurement results agree with analytical calculation accurately.
Keyword (in Japanese) (See Japanese page) 
(in English) 3dB branch-line coupler / reduced-size / tunable / / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 250, MW2011-94, pp. 45-50, Oct. 2011.
Paper # MW2011-94 
Date of Issue 2011-10-13 (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 MW2011-94

Conference Information
Committee MW  
Conference Date 2011-10-20 - 2011-10-21 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Electro-Communications 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2011-10-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design and Analysis of Tunable and Reduced-Size Branch-Line 3dB Hybrid 
Sub Title (in English)  
Keyword(1) 3dB branch-line coupler  
Keyword(2) reduced-size  
Keyword(3) tunable  
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1st Author's Name Satoshi Kondo  
1st Author's Affiliation Gunma National College of Technology (GNCT)
2nd Author's Name Hajime Kondo  
2nd Author's Affiliation CHUO ELECTRONICS (CHUO ELEC.)
3rd Author's Name Hitoshi Ishida  
3rd Author's Affiliation Gunma National College of Technology (GNCT)
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Speaker Author-1 
Date Time 2011-10-20 14:30:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2011-94 
Volume (vol) vol.111 
Number (no) no.250 
Page pp.45-50 
#Pages 6 
Date of Issue 2011-10-13 (MW) 

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