Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2025-03-07 14:40
Circular Waveguide Polarizer Consisting of Ridges Whose Width Change Periodically
Hidenori Yukawa, Yu Ushijima, Akimichi Hirota, Yoshio Inasawa (Mitsubishi Ele. Corp.) MW2024-193
Abstract (in Japanese) (See Japanese page) 
(in English) In antenna feed circuits, circular polarizers are known as waveguide components that convert linearly polarized waves into circularly polarized waves. Those made of circular waveguides are easy to connect to circular horn antennas, but compared to those made of square waveguides, they have a problem that it is difficult to obtain good characteristics because the cutoff frequency of higher modes is low.
Therefore, we propose a new configuration for a circular polarizer consisting of a circular waveguide, assuming the use of a 3D printer, with the aim of improving its characteristics. It has a ridge whose width changes periodically in the tube axial direction and aims to improve the axial ratio by reducing the difference in the reflection characteristics of the orthogonal linearly polarized waves.
Here, we report on the evaluation and verification of the proposed circular polarizer using a prototype. The design target is two frequency bands for satellite communications. A metal 3D printer (aluminum alloy) was used for the prototype. Measurement results showed that a reflection of 20 dB and an axial ratio of 0.6 dB were obtained in the two frequency bands, confirming the usefulness of the proposed configuration.
Keyword (in Japanese) (See Japanese page) 
(in English) Antenna feed systems / Waveguide / Polarizer / 3D-printer / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 421, MW2024-193, pp. 134-139, March 2025.
Paper # MW2024-193 
Date of Issue 2025-02-27 (MW) 
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 MW2024-193

Conference Information
Committee MW  
Conference Date 2025-03-06 - 2025-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Taisha Urara-kan Culrural Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, etc. 
Paper Information
Registration To MW 
Conference Code 2025-03-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Circular Waveguide Polarizer Consisting of Ridges Whose Width Change Periodically 
Sub Title (in English)  
Keyword(1) Antenna feed systems  
Keyword(2) Waveguide  
Keyword(3) Polarizer  
Keyword(4) 3D-printer  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Hidenori Yukawa  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Ele. Corp.)
2nd Author's Name Yu Ushijima  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Ele. Corp.)
3rd Author's Name Akimichi Hirota  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Ele. Corp.)
4th Author's Name Yoshio Inasawa  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Ele. Corp.)
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2025-03-07 14:40:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2024-193 
Volume (vol) vol.124 
Number (no) no.421 
Page pp.134-139 
#Pages 6 
Date of Issue 2025-02-27 (MW) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan