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Paper Abstract and Keywords
Presentation 2019-08-23 09:55
Experimental Evaluation and Design of the 920MHz Band Antennas with Directivity, Polarization, and Space Diversity for Indoor IoT Devices
Naotake Yamamoto (Panasonic), Kobayashi Hiroaki, Yasunori Komukai, Masayuki Obata, Takashi Izumi (PSNRD), Toshiyuki Maeyama (Takushoku Univ.) AP2019-64
Abstract (in Japanese) (See Japanese page) 
(in English) A IoT (Internet of Things) system using the 920 MHz band in indoor environment has become widespread.
The IoT devices are placed indoors at various locations and installed fixed or semi-fixed. In addition, the polarization characteristics of the antenna may differ from each device. It is generally known that radio wave propagation characteristics in indoor environment are multipath rich. Therefore, in order to communicate with these devices, it is necessary to design an optimal antenna corresponding to the radio wave propagation characteristics in the actual usage environment and device’s characteristics.
In this paper, we propose antennas with three diversity effects, such as directivity, polarization, and space to realize stable communication. Finally, we confirm its effectiveness by experimental evaluation in an actual indoor environment.
Keyword (in Japanese) (See Japanese page) 
(in English) Antennas / Indoor Radio Wave Propagation / Diversity / IoT / 920MHz Band / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 168, AP2019-64, pp. 91-96, Aug. 2019.
Paper # AP2019-64 
Date of Issue 2019-08-14 (AP) 
ISSN Online edition: ISSN 2432-6380
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 AP2019-64

Conference Information
Committee AP  
Conference Date 2019-08-21 - 2019-08-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkai-Gakuen Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2019-08-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental Evaluation and Design of the 920MHz Band Antennas with Directivity, Polarization, and Space Diversity for Indoor IoT Devices 
Sub Title (in English)  
Keyword(1) Antennas  
Keyword(2) Indoor Radio Wave Propagation  
Keyword(3) Diversity  
Keyword(4) IoT  
Keyword(5) 920MHz Band  
1st Author's Name Naotake Yamamoto  
1st Author's Affiliation Panasonic Corporation (Panasonic)
2nd Author's Name Kobayashi Hiroaki  
2nd Author's Affiliation Panasonic System Networks R&D Lab. (PSNRD)
3rd Author's Name Yasunori Komukai  
3rd Author's Affiliation Panasonic System Networks R&D Lab. (PSNRD)
4th Author's Name Masayuki Obata  
4th Author's Affiliation Panasonic System Networks R&D Lab. (PSNRD)
5th Author's Name Takashi Izumi  
5th Author's Affiliation Panasonic System Networks R&D Lab. (PSNRD)
6th Author's Name Toshiyuki Maeyama  
6th Author's Affiliation takushoku University (Takushoku Univ.)
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Speaker Author-1 
Date Time 2019-08-23 09:55:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2019-64 
Volume (vol) vol.119 
Number (no) no.168 
Page pp.91-96 
Date of Issue 2019-08-14 (AP) 

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