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Paper Abstract and Keywords
Presentation 2018-03-01 16:50
[Special Talk] Study of hollow aperture antennas using axial post-wall laminated substrates for terahertz wireless communications
Takuro Tajima (NTT) MW2017-189 ICD2017-113
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents terahertz hollow aperture antennas and its integration solutions suitable for THz short-range wireless communications system. For practical short-range THz wireless communications, a transceiver which is compact enough to be embedded inside mobiles is one of the key components. Then we show link budget calculation to estimate requirement of antenna gain for short-range wireless system. The issues in conventional THz antennas for wireless applications were discussed. Based on discussion, an axial post-wall waveguide (APW) for THz antenna and its integration solutions into THz transceiver were proposed. Next, we presents compact and high-efficiency horn antenna using axial post-wall laminated substrates in LTCC. The antenna provides 15-dBi antenna gain at 300 GHz and 26dB cross polarization discrimination for main beam. We present two packaging solutions for low-loss and wideband antenna-IC interconnection and 20-Gbps signal line embedded in LTCC. The package-integrated transition offers capability of hermetic sealing and 1-dB estimated loss with 36-GHz bandwidth with better than 10-dB return loss. Heterogeneously-integrated transition using a polyimide substrate offers 1-dB estimated loss with 49-GHz bandwidth with better than 10-dB return loss. On the basis of conventional lens module, the signal line embedded in lens LTCC package is designed and tested by wireless transmission experiment using an electronics-based transmitter, and results show that the module is applicable up to 27-Gbps signal.
Keyword (in Japanese) (See Japanese page) 
(in English) Terahertz / Post-wall / hollow aperture antenna / laminated substrate / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 462, MW2017-189, pp. 71-76, March 2018.
Paper # MW2017-189 
Date of Issue 2018-02-22 (MW, ICD) 
ISSN Print edition: ISSN 0913-5685    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 MW2017-189 ICD2017-113

Conference Information
Committee ICD MW  
Conference Date 2018-03-01 - 2018-03-02 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Shiga Prefecture 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Integrated Circuit/Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2018-03-ICD-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study of hollow aperture antennas using axial post-wall laminated substrates for terahertz wireless communications 
Sub Title (in English)  
Keyword(1) Terahertz  
Keyword(2) Post-wall  
Keyword(3) hollow aperture antenna  
Keyword(4) laminated substrate  
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1st Author's Name Takuro Tajima  
1st Author's Affiliation NTT Device Technology Labs (NTT)
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Speaker Author-1 
Date Time 2018-03-01 16:50:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2017-189, ICD2017-113 
Volume (vol) vol.117 
Number (no) no.462(MW), no.463(ICD) 
Page pp.71-76 
#Pages 6 
Date of Issue 2018-02-22 (MW, ICD) 

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