Presentation 2013-07-22
Proposal and Demonstration of Noise Reduction Method by Modifying Shunt Resistors in RSFQ Circuits.
Yuma KITA, Hiromi MATSUOKA, Shigeyuki MIYAJIMA, Masamitsu TANAKA, Akira FUJIMAKI,
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Abstract(in English) The major noise sources in rapid single-flux-quantum (RSFQ) circuits are shunt resistors which are connected in parallel with Josephson junctions (JJs). We present a new design technique of RSFQ logic gates for noise reduction. In this study, we propose the use of a damping resistor shared with a junction pair composing a comparator, in addition to their individual shunt resistors increased from the standard values to increase McCumber-Stewart parameters from 1 to 4. We analyzed timing characteristics and bit error rates (BERs) of several RSFQ flip-flops composed of the proposed comparators using numerical simulation. The proposed comparator showed sharped BER curves, and improvement in timing characteristics compared to the standard comparator. We fabricated 2-bit shift registers using the noise reduction technique, and obtained sharp BER curves from the measurement.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) single-flux-quantum circuit / low-noise / shunt resistor / shift register
Paper # SCE2013-14
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Conference Information
Committee SCE
Conference Date 2013/7/15(1days)
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Paper Information
Registration To Superconductive Electronics (SCE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Proposal and Demonstration of Noise Reduction Method by Modifying Shunt Resistors in RSFQ Circuits.
Sub Title (in English)
Keyword(1) single-flux-quantum circuit
Keyword(2) low-noise
Keyword(3) shunt resistor
Keyword(4) shift register
1st Author's Name Yuma KITA
1st Author's Affiliation Nagoya University()
2nd Author's Name Hiromi MATSUOKA
2nd Author's Affiliation Nagoya University
3rd Author's Name Shigeyuki MIYAJIMA
3rd Author's Affiliation Osaka Prefecture University
4th Author's Name Masamitsu TANAKA
4th Author's Affiliation Nagoya University
5th Author's Name Akira FUJIMAKI
5th Author's Affiliation Nagoya University
Date 2013-07-22
Paper # SCE2013-14
Volume (vol) vol.113
Number (no) 149
Page pp.pp.-
#Pages 6
Date of Issue