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Paper Abstract and Keywords
Presentation 2015-08-04 14:45
Feeding methods of SFQ pulse trains in evaluation of DFQ amplifiers
Yoshiaki Urai, Hiroshi Shimada, Yoshinao Mizugaki (UEC Tokyo) SCE2015-11
Abstract (in Japanese) (See Japanese page) 
(in English) Toward the realization of next generation AC voltage standards, RSFQ-D/A converters of the frequency modulation type have been studied. For implementation of an essential voltage multiplier (VM) component, we have focused on a double flux quantum amplifier (DFQA). In our previous studies, it was verified that a 1000-fold DFQA operated up to 600 MHz with relative errors less than ±0.1 % with SFQ pulse trains fed using a dc/SFQ converter. It is necessary to evaluate the DFQA performance at higher frequencies beyond 10 GHz for application to RSFQ-D/A converters. In this paper, we report the evaluation of a 200-fold DFQA using SFQ pulse trains generated using a dc/SFQ converter and a 64-fold pulse number multiplier (PNM). In addition, we figure out why there is certain difference in the maximum operation frequencies between the experimental over-biasing method and numerical periodic pulse feeding.
Keyword (in Japanese) (See Japanese page) 
(in English) Josephson effect / Single Flux Quantum / Voltage multiplier / Superconducting integrated circuits / Nb/AlOx/Nb / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 173, SCE2015-11, pp. 17-22, Aug. 2015.
Paper # SCE2015-11 
Date of Issue 2015-07-28 (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 SCE2015-11

Conference Information
Committee SCE  
Conference Date 2015-08-04 - 2015-08-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Yokohama National Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Signal processing technologies and their applications, etc. 
Paper Information
Registration To SCE 
Conference Code 2015-08-SCE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Feeding methods of SFQ pulse trains in evaluation of DFQ amplifiers 
Sub Title (in English)  
Keyword(1) Josephson effect  
Keyword(2) Single Flux Quantum  
Keyword(3) Voltage multiplier  
Keyword(4) Superconducting integrated circuits  
Keyword(5) Nb/AlOx/Nb  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yoshiaki Urai  
1st Author's Affiliation The University of Electro-Communications (UEC Tokyo)
2nd Author's Name Hiroshi Shimada  
2nd Author's Affiliation The University of Electro-Communications (UEC Tokyo)
3rd Author's Name Yoshinao Mizugaki  
3rd Author's Affiliation The University of Electro-Communications (UEC Tokyo)
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Speaker Author-3 
Date Time 2015-08-04 14:45:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2015-11 
Volume (vol) vol.115 
Number (no) no.173 
Page pp.17-22 
#Pages 6 
Date of Issue 2015-07-28 (SCE) 

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