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Presentation 2017-12-19 11:20
A study on Frequency Identification of Received RF Signal in Wideband Direct RF Undersampling Frequency Sensor
Tomoyuki Furuichi, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu (Tohoku Univ.) MW2017-144 Link to ES Tech. Rep. Archives: MW2017-144
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, with the popularization of wireless IoT (Internet of Things), real time frequency sensing technology for multi bands (920 MHz band, 2.4 GHz band, 5-6 GHz band) used by wireless IoT devices is required. A direct RF undersampling frequency sensor for a cognitive radio that directly samples an RF signal have been reported as a method of sensing multiple frequency bands all at once and real time using a single receiver. However, since the total of the measurement bandwidths can’t exceed 1/2 of the sampling frequency, widen measurement bandwidth is desired. We proposed a direct RF undersampling frequency sensor with a measured frequency bandwidth exceeding 1/2 of the sampling frequency, which proposes a method of specifying the frequency of the received RF signal by switching the sampling frequency more than once, and its clock frequency switching conditions were examined. By applying this condition, numerical calculation shows that the receiving RF frequency can be specified by approximately once switching the clock frequency. Further demonstration experiment using prototype S/H IC was performed, and it was confirmed that this proposal is effective also in the received waveform actually obtained. Further experiments were performed using prototype S/H IC, and it was confirmed that this proposal is effective with the received waveform actually obtained.
Keyword (in Japanese) (See Japanese page) 
(in English) Undersampling / Microwaves / Receiver / Cognitive radio / Frequency identification / Direct RF / Digital RF /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 366, MW2017-144, pp. 13-18, Dec. 2017.
Paper # MW2017-144 
Date of Issue 2017-12-12 (MW) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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 MW2017-144 Link to ES Tech. Rep. Archives: MW2017-144

Conference Information
Committee MW  
Conference Date 2017-12-19 - 2017-12-20 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MW 
Conference Code 2017-12-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on Frequency Identification of Received RF Signal in Wideband Direct RF Undersampling Frequency Sensor 
Sub Title (in English)  
Keyword(1) Undersampling  
Keyword(2) Microwaves  
Keyword(3) Receiver  
Keyword(4) Cognitive radio  
Keyword(5) Frequency identification  
Keyword(6) Direct RF  
Keyword(7) Digital RF  
Keyword(8)  
1st Author's Name Tomoyuki Furuichi  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Mizuki Motoyoshi  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Suguru Kameda  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Noriharu Suematsu  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker
Date Time 2017-12-19 11:20:00 
Presentation Time 25 
Registration for MW 
Paper # IEICE-MW2017-144 
Volume (vol) IEICE-117 
Number (no) no.366 
Page pp.13-18 
#Pages IEICE-6 
Date of Issue IEICE-MW-2017-12-12 


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