| Presentation | 2022-01-21 Study of Reflection Effects and Stabilization of High-Speed Operation for Long Interconnection of Adiabatic Quantum-Flux-Parametron Logic Circuits Naoya Mizushima, Naoki Takeuchi, Yuki Yamanashi, Nobuyuki Yoshikawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The adiabatic quantum-flux-parametron (AQFP) circuit is a superconducting logic circuit with extremely low power consumption. Many AQFP large-scale circuits have been designed and demonstrated so far. However, there is a problem that operation of AQFP become unstable in long-distance signal transmission during high-speed operation, which severely limits the wiring length and increases the circuit area and latency. To solve this problem, we conducted simulations using a transmission line model. We confirmed that the cause of the unstable operation is the multiple reflection of signal current between the gates. We showed that we can get correct operation inserting normal conductive resistance Rpar between input port of wire and ground. We evaluated the margin of JJ and energy consumption of the citcuit with Rpar and the optimal value of Rpar was determined. We also fabricated the circuit with Rpar inserted and measured the BER to demonstrate the operation and evaluate the effectiveness. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | AQFP / wire length / reflection / BER |
| Paper # | SCE2021-13 |
| Date of Issue | 2022-01-14 (SCE) |
| Conference Information | |
| Committee | SCE |
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| Conference Date | 2022/1/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yoshio Mizugaki(Univ. of Electro-Comm.) |
| Vice Chair | |
| Secretary | (AIST) |
| Assistant | Hiroyuki Akaike(Daido Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Superconductive Electronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study of Reflection Effects and Stabilization of High-Speed Operation for Long Interconnection of Adiabatic Quantum-Flux-Parametron Logic Circuits |
| Sub Title (in English) | |
| Keyword(1) | AQFP |
| Keyword(2) | wire length |
| Keyword(3) | reflection |
| Keyword(4) | BER |
| 1st Author's Name | Naoya Mizushima |
| 1st Author's Affiliation | Yokohama National University(Yokohama National Univ.) |
| 2nd Author's Name | Naoki Takeuchi |
| 2nd Author's Affiliation | Yokohama National University(Yokohama National Univ.) |
| 3rd Author's Name | Yuki Yamanashi |
| 3rd Author's Affiliation | Yokohama National University(Yokohama National Univ.) |
| 4th Author's Name | Nobuyuki Yoshikawa |
| 4th Author's Affiliation | Yokohama National University(Yokohama National Univ.) |
| Date | 2022-01-21 |
| Paper # | SCE2021-13 |
| Volume (vol) | vol.121 |
| Number (no) | SCE-340 |
| Page | pp.pp.6-11(SCE), |
| #Pages | 6 |
| Date of Issue | 2022-01-14 (SCE) |