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Paper Abstract and Keywords
Presentation 2023-06-15 13:55
Recent Progress of One and Two-dimensional Orthogonal Switching Matrices with an Arbitrary Number of Beams
Jiro Hirokawa, Qi Li, Shengjia Wu, Takashi Tomura (Tokyo Tech), Nelson J. G. Fonseca (ESA) AP2023-25
Abstract (in Japanese) (See Japanese page) 
(in English) This manuscript describes recent progress in 1D and 2D orthogonal switching matrices with an arbitrary number of beams. In the 1D matrices, each input port should be assigned a phase difference between adjacent output ports. For the case of four beams, the assignment that gives the best output characteristics is considered. For the waveguide 2-D matrix, a case where the number (3x3) of beams is the same in the horizaontal and vertical directions but the number of beams is not a power of two. For the waveguide 2-plane coupler, which is an important component, it is necessary to introduce a coupling ratio that is the same in the horizaontal and vertical directions but has unequal amplitudes and another coupling ratio that is different in the horizaontal and vertical directions. As an example, a two-plane coupler with a coupling ratio of 1:$sqrt｛2}$ in the horizontal direction and $sqrt｛2}$:1 in the vertical direction is described.
Keyword (in Japanese) (See Japanese page) 
(in English) Beam-switching matrix / Orthogonal beams / Waveguide two-plane coupler / / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 79, AP2023-25, pp. 7-10, June 2023.
Paper # AP2023-25 
Date of Issue 2023-06-08 (AP) 
ISSN 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 AP2023-25

Conference Information
Committee AP  
Conference Date 2023-06-15 - 2023-06-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2023-06-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Recent Progress of One and Two-dimensional Orthogonal Switching Matrices with an Arbitrary Number of Beams 
Sub Title (in English)  
Keyword(1) Beam-switching matrix  
Keyword(2) Orthogonal beams  
Keyword(3) Waveguide two-plane coupler  
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1st Author's Name Jiro Hirokawa  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Qi Li  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Shengjia Wu  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
4th Author's Name Takashi Tomura  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
5th Author's Name Nelson J. G. Fonseca  
5th Author's Affiliation European Space Agency (ESA)
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Speaker Author-1 
Date Time 2023-06-15 13:55:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2023-25 
Volume (vol) vol.123 
Number (no) no.79 
Page pp.7-10 
#Pages 4 
Date of Issue 2023-06-08 (AP) 

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