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Paper Abstract and Keywords
Presentation 2024-07-11 15:35
Measurement results of septum polarizer consisting of circular-to-rectangular converting waveguide
Hidenori Yukawa, Kodai Miura, Akimichi Hirota, Yoshio Inasawa (Mitsubishi Ele. Corp.) EMT2024-16 MW2024-40 OPE2024-19 EST2024-17 MWPTHz2024-23
Abstract (in Japanese) (See Japanese page) 
(in English) A septum polarizer is one of the waveguide components that separates two orthogonal polarizations, and is often used in satellite communication antenna feed systems. It has the advantage of being able to achieve a good axial ratio without using a complicated polarization networks. However, when connecting to a horn antenna consisting of a circular waveguide, a circular-to-square waveguide converter is required, and there is a problem of lengthening the axis by that amount.
Therefore, we propose a septum polarizer consisting of circular-to-rectangular converting waveguide. Since a circular-to-square waveguide converter is not required, it is possible to shorten the axis. In addition, by sawing the side shape of the septum, the effect of making the outer wall a circular-to-rectangular conversion structure is compensated, and better axial ratio characteristics are realized.
Here, we report on the evaluation and verification of the proposed septum polarizer by
prototype. The design target was the K band for satellite communications. In addition, a metal 3D printer (aluminum alloy) was used for prototyping. The tapered circular-to-rectangular conversion structure of the proposed configuration is difficult to process by cutting, but it is easy to process with a 3D printer. As a result of the measurement, reflection of 30 dB, isolation of 30 dB, axis ratio of 0.2 dB, and of XPD 40 dB were obtained at a specific bandwidth of 13% in the K band, confirming the usefulness of the proposed configuration..
Keyword (in Japanese) (See Japanese page) 
(in English) Antenna feed systems / Waveguide / Septum polarizer / 3D-printer / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 96, MW2024-40, pp. 38-43, July 2024.
Paper # MW2024-40 
Date of Issue 2024-07-04 (EMT, MW, OPE, EST, MWPTHz) 
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 EMT2024-16 MW2024-40 OPE2024-19 EST2024-17 MWPTHz2024-23

Conference Information
Committee MW EMT OPE MWPTHz EST IEE-EMT  
Conference Date 2024-07-11 - 2024-07-12 
Place (in Japanese) (See Japanese page) 
Place (in English) otaru-shimin-kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Workshop on Optical and Microwave technologies 
Paper Information
Registration To MW 
Conference Code 2024-07-MW-EMT-OPE-MWPTHz-EST-EMT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurement results of septum polarizer consisting of circular-to-rectangular converting waveguide 
Sub Title (in English)  
Keyword(1) Antenna feed systems  
Keyword(2) Waveguide  
Keyword(3) Septum polarizer  
Keyword(4) 3D-printer  
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1st Author's Name Hidenori Yukawa  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Ele. Corp.)
2nd Author's Name Kodai Miura  
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.)
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Speaker Author-1 
Date Time 2024-07-11 15:35:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # EMT2024-16, MW2024-40, OPE2024-19, EST2024-17, MWPTHz2024-23 
Volume (vol) vol.124 
Number (no) no.95(EMT), no.96(MW), no.97(OPE), no.98(EST), no.99(MWPTHz) 
Page pp.38-43 
#Pages 6 
Date of Issue 2024-07-04 (EMT, MW, OPE, EST, MWPTHz) 

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