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Paper Abstract and Keywords
Presentation 2024-10-18 10:50
Consideration on expanding to low frequency range for a folded broadband antenna
Shinobu Ishigami, Ken Kawamata (TGU), Katsushige Harima (NICT), Shingo Inori (ELENA) EMCJ2024-54 MW2024-107 EST2024-78
Abstract (in Japanese) (See Japanese page) 
(in English) In EMI measurements, measuring antennas are needed to be changed according to the frequency bands. Antenna replacement is a factor that increases the time and effort required for measuring and leads to higher measurement costs. Therefore, aiming to perform EMI measurements over the entire frequency band with a single antenna, a folded long-hexagon antenna (FLHA) had been designed and developed in the previous study. The characteristics of the developed antenna, including absolute antenna gain, were measured in the previous study and the usable frequency of the antenna was shown to be from 400 MHz to 40 GHz. However, the CISPR standards specify that the lower frequency limit for measuring radiated electric-field emissions is 30 MHz, and current proposed antennas lack sensitivity at frequencies below 400 MHz. This paper presents the results of a study into expanding the lower usable frequency limit of folded ultra-broadband antennas that have been developed. Several prototype antennas are fabricated, and the results of measuring their gain characteristics are presented.
Keyword (in Japanese) (See Japanese page) 
(in English) Broadband Antenna / Low Frequency Range / EMI Measurements / Antenna Gain / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 210, EMCJ2024-54, pp. 98-102, Oct. 2024.
Paper # EMCJ2024-54 
Date of Issue 2024-10-10 (EMCJ, MW, EST) 
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 EMCJ2024-54 MW2024-107 EST2024-78

Conference Information
Committee EST MW EMCJ IEE-EMC  
Conference Date 2024-10-17 - 2024-10-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Akita Art Village Onsen Yupopo 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, EM simulation, EMC, etc. 
Paper Information
Registration To EMCJ 
Conference Code 2024-10-EST-MW-EMCJ-EMC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Consideration on expanding to low frequency range for a folded broadband antenna 
Sub Title (in English)  
Keyword(1) Broadband Antenna  
Keyword(2) Low Frequency Range  
Keyword(3) EMI Measurements  
Keyword(4) Antenna Gain  
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1st Author's Name Shinobu Ishigami  
1st Author's Affiliation Tohoku Gakuin University (TGU)
2nd Author's Name Ken Kawamata  
2nd Author's Affiliation Tohoku Gakuin University (TGU)
3rd Author's Name Katsushige Harima  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
4th Author's Name Shingo Inori  
4th Author's Affiliation ELENA electronics Co. Ltd. (ELENA)
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Speaker Author-1 
Date Time 2024-10-18 10:50:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2024-54, MW2024-107, EST2024-78 
Volume (vol) vol.124 
Number (no) no.210(EMCJ), no.211(MW), no.212(EST) 
Page pp.98-102 
#Pages 5 
Date of Issue 2024-10-10 (EMCJ, MW, EST) 

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