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Paper Abstract and Keywords
Presentation 2006-10-27 11:10
H-Plane Waveguide Eight-Port Hybrid and Its Application to Directional Coupler with Variable Coupling Factor
Katsunori Toda, Isao Ohta (Univ. Hyogo), Mitsuyoshi Kishihara (Okayama Pref. Univ.) EMCJ2006-66 MW2006-122
Abstract (in Japanese) (See Japanese page) 
(in English) This paper suggests an eight-port hybrid consisting of four cruciform H-plane 3-dB hybrids connected with each other and presents some circuit configurations and their optimization results. In addition to the compact structure and fully planar structure, the present eight-port hybrids are marked by very high power handling capability. Therefore, this circuit would be useful for not only a comparator in a monopulse radar system but also four-way power combining / dividing in a super-high power microwave system such as a linear accelerator.
Next, a directional coupler with variable coupling factor is proposed using the above eight-port hybrid. The coupling factor can be controlled from 0 to ∞ dB by appropriately adjusting the phase relation of reflectors connected at four ports isolated from one another. Moreover, a broadband H-plane waveguide magic T is demonstrated using the working principle.
Keyword (in Japanese) (See Japanese page) 
(in English) Multi-port circuit / ,Comparator / hybrid / Directional coupler / H-plane waveguide / Microwave passive component / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 323, MW2006-122, pp. 87-91, Oct. 2006.
Paper # MW2006-122 
Date of Issue 2006-10-19 (EMCJ, 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 EMCJ2006-66 MW2006-122

Conference Information
Committee EMCJ MW  
Conference Date 2006-10-26 - 2006-10-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Hachinohe Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MW 
Conference Code 2006-10-EMCJ-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) H-Plane Waveguide Eight-Port Hybrid and Its Application to Directional Coupler with Variable Coupling Factor 
Sub Title (in English)  
Keyword(1) Multi-port circuit  
Keyword(2) ,Comparator  
Keyword(3) hybrid  
Keyword(4) Directional coupler  
Keyword(5) H-plane waveguide  
Keyword(6) Microwave passive component  
Keyword(7)  
Keyword(8)  
1st Author's Name Katsunori Toda  
1st Author's Affiliation University of Hyogo (Univ. Hyogo)
2nd Author's Name Isao Ohta  
2nd Author's Affiliation University of Hyogo (Univ. Hyogo)
3rd Author's Name Mitsuyoshi Kishihara  
3rd Author's Affiliation Okayama Prefectural University (Okayama Pref. Univ.)
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Speaker Author-2 
Date Time 2006-10-27 11:10:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # EMCJ2006-66, MW2006-122 
Volume (vol) vol.106 
Number (no) no.322(EMCJ), no.323(MW) 
Page pp.87-91 
#Pages 5 
Date of Issue 2006-10-19 (EMCJ, MW) 

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