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Paper Abstract and Keywords
Presentation 2017-08-09 15:40
Design of Digital SQUID using sub-SFQ Feedback with High Sampling Rate
Kosuke Okabe, Masato Naruse, Tohru Taino, Hiroaki Myoren (Saitama Univ.) SCE2017-19
Abstract (in Japanese) (See Japanese page) 
(in English) Digital SQUIDs based on single-flux quantum (SFQ) logic have attractive characteristics such as wide dynamic ranges and high slew rates. To realize lower magnetic field noise by magnetometers using digital SQUIDs, we have adopted two feedback combinations: one utilizing the SFQ input/output for a main loop and the other using a mutually coupled loop. The main loop receives direct flux quantum feedback  and sub-flux quantum feedback /n where n is an integer, from the mutually coupled loop. For generating feedback SFQ pulses we use an up/down counter and its latency and time for generating SFQ pule train limits high-frequency operation of the digital SQUID. In this study, we designed an up/down counter with low latency and used a multi-flux quantum generator for fast SFQ pulse train generation for the digital SQUID with high sampling rate.
Keyword (in Japanese) (See Japanese page) 
(in English) digital SQUID / Single flux quantum (SFQ) circuit / sub-SFQ feedback / dynamic range / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 171, SCE2017-19, pp. 49-53, Aug. 2017.
Paper # SCE2017-19 
Date of Issue 2017-08-02 (SCE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 SCE2017-19

Conference Information
Committee SCE  
Conference Date 2017-08-09 - 2017-08-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoya Univ. (Higashiyama Campus) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Signal processing technologies and their applications, etc. 
Paper Information
Registration To SCE 
Conference Code 2017-08-SCE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of Digital SQUID using sub-SFQ Feedback with High Sampling Rate 
Sub Title (in English)  
Keyword(1) digital SQUID  
Keyword(2) Single flux quantum (SFQ) circuit  
Keyword(3) sub-SFQ feedback  
Keyword(4) dynamic range  
Keyword(5)  
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1st Author's Name Kosuke Okabe  
1st Author's Affiliation Saitama University (Saitama Univ.)
2nd Author's Name Masato Naruse  
2nd Author's Affiliation Saitama University (Saitama Univ.)
3rd Author's Name Tohru Taino  
3rd Author's Affiliation Saitama University (Saitama Univ.)
4th Author's Name Hiroaki Myoren  
4th Author's Affiliation Saitama University (Saitama Univ.)
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Speaker Author-1 
Date Time 2017-08-09 15:40:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2017-19 
Volume (vol) vol.117 
Number (no) no.171 
Page pp.49-53 
#Pages 5 
Date of Issue 2017-08-02 (SCE) 

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