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Paper Abstract and Keywords
Presentation 2006-03-03 11:20
A basic study about switch circuits for a 60-GHz band single port / multi-sector switching antenna
Takuma Sawaya, Naoko Matsunaga, Makoto Taromaru, Takashi Ohira (ATR) Link to ES Tech. Rep. Archives: MW2005-178
Abstract (in Japanese) (See Japanese page) 
(in English) We are studying about a new approach for a 60-GHz mm-wave sector
switchable antenna for the gigabit rate wireless local area networks. For a sector switching device of this antenna, we have investigated the feasibility of achieving a waveguide switch structure by using a varactor diode. We adopted a dynamic Q factor obtained from the computer simulation for an evaluation criterion of the performance of the varactor. We defined the operation bandwidth of this switch as the bandwidth which the return loss is less or equal 1 dB at the off-state and the insertion loss is less or equal 3 dB at the on-state. It was confirmed that the dynamic Q factor of the varactor should be greater than 11 to realize the above low-loss condition within 3 GHz operation bandwidth at the 60 GHz band.
Keyword (in Japanese) (See Japanese page) 
(in English) mm-wave / sector / wireless LAN / varactor / Q factor / capacitance change ratio / diversity / antenna  
Reference Info. IEICE Tech. Rep., vol. 105, no. 626, MW2005-178, pp. 1-6, March 2006.
Paper # MW2005-178 
Date of Issue 2006-02-24 (MW) 
ISSN Print edition: ISSN 0913-5685  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 Link to ES Tech. Rep. Archives: MW2005-178

Conference Information
Committee RCS AP WBS SR MW MoNA  
Conference Date 2006-03-01 - 2006-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) YRP 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MW 
Conference Code 2006-03-RCS-AP-WBS-SR-MW-MoMuC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A basic study about switch circuits for a 60-GHz band single port / multi-sector switching antenna 
Sub Title (in English)  
Keyword(1) mm-wave  
Keyword(2) sector  
Keyword(3) wireless LAN  
Keyword(4) varactor  
Keyword(5) Q factor  
Keyword(6) capacitance change ratio  
Keyword(7) diversity  
Keyword(8) antenna  
1st Author's Name Takuma Sawaya  
1st Author's Affiliation ATR (ATR)
2nd Author's Name Naoko Matsunaga  
2nd Author's Affiliation ATR (ATR)
3rd Author's Name Makoto Taromaru  
3rd Author's Affiliation ATR (ATR)
4th Author's Name Takashi Ohira  
4th Author's Affiliation ATR (ATR)
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Date Time 2006-03-03 11:20:00 
Presentation Time 20 
Registration for MW 
Paper # IEICE-MW2005-178 
Volume (vol) IEICE-105 
Number (no) no.626 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-MW-2006-02-24 

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