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| Presentation | 2019-08-09 14:20 Design and Operation of RSFQ Distributed Output Amplifier Equipped with double-stack SQUIDs Komei Higuchi, Hiroshi Shimada, Yoshinao Mizugaki (UEC Tokyo)  SCE2019-16 Link to ES Tech. Rep. Archives: SCE2019-16 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Recently, many groups have been proposed Rapid Single-Flux-Quantum (RSFQ) output amplifiers which are designed to connect RSFQ circuitry to room temperature electronics. We focus on a superconducting distributed amplifier (DA) comprising cascaded fundamental cells each of which comprises of an RS flip-flop and a read-out SQUID. In the previous report, a 12-stage RSFQ DA was demonstrated, in which the output voltage swing was 1.75 mV for 10 Gbps data link. Enhancement of the output voltage swing is important to realize connections with wider bandwidths from low temperature to room temperature environment. In this report, we propose a DA in which a single-SQUID is replaced with a double-SQUID. By introducing double-SQUIDs, the output voltage swing is expected to be two-fold. In simulation, the maximum output voltage swing of a 4-stage double-SQUID DA was 3.54 mV, which was 2.07 times larger than that of a single-SQUID DA. We fabricated a 4-stage double-DA using a Nb integration technology. The maximum output voltage swing of 2.93 mV was demonstrated and its operation conditions were in good agreement with the numerical results. We also designed and fabricated a 12-stage and 24-stage double-DA, each of which the maximum output voltage swings were 8.23 and 14.4 mV, respectively. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | single-flux-quantum / SQUID / output amplifier / superconducting integrated circuits / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 164, SCE2019-16, pp. 43-48, Aug. 2019. | |
| Paper # | SCE2019-16 | |
| Date of Issue | 2019-08-02 (SCE) | |
| 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 | SCE2019-16 Link to ES Tech. Rep. Archives: SCE2019-16 |
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| Conference Information | |
| Committee | SCE |
| Conference Date | 2019-08-09 - 2019-08-09 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | National Institute of Advanced Industrial Science and Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Device, think film, etc. |
| Paper Information | |
| Registration To | SCE |
| Conference Code | 2019-08-SCE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design and Operation of RSFQ Distributed Output Amplifier Equipped with double-stack SQUIDs |
| Sub Title (in English) | |
| Keyword(1) | single-flux-quantum |
| Keyword(2) | SQUID |
| Keyword(3) | output amplifier |
| Keyword(4) | superconducting integrated circuits |
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| Keyword(8) | |
| 1st Author's Name | Komei Higuchi |
| 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 | 2019-08-09 14:20:00 |
| Presentation Time | 25 minutes |
| Registration for | SCE |
| Paper # | SCE2019-16 |
| Volume (vol) | vol.119 |
| Number (no) | no.164 |
| Page | pp.43-48 |
| #Pages | 6 |
| Date of Issue | 2019-08-02 (SCE) |
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