Investigation of basic properties of an HTS sigma-delta modulator

被引：1

作者：

Saitoh, K ^{[1
]}

Furuta, F ^{[1
]}

Soutome, Y ^{[1
]}

Fukazawa, T ^{[1
]}

Takagi, K ^{[1
]}

机构：

[1] Hitachi Ltd, Adv Res Lab, Kokubunji, Tokyo 1858601, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 378卷 / PART 2期

关键词：

single flux quantum; interface engineered Josephson junction; superconducting sigma-delta modulator;

D O I：

10.1016/S0921-4534(02)01752-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We fabricated and tested a high-temperature superconducting sigma-delta modulator using interface-engineered Josephson junctions. Proper dc-characteristics were obtained with a sampling frequency of 100 GHz at 20 K. To achieve high-speed sampling, Josephson junctions with a higher critical-current normal-resistance product were used. Circuit simulations with thermal noise were performed for the analysis of switching characteristics and SFQ dynamics. Further numerical analysis was made for the estimation of signal to noise ratio. Resultant bit accuracy was found to be 10.4 for 122 MHz input signal band. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：1429 / 1434

页数：6

共 16 条

[1] CANDY JC, 1992, IEEE PRESS, P1
[2] Analogue demonstration of a high temperature superconducting sigma-delta modulator with 27 GHz sampling
Forrester, MG
Hunt, BD
Miller, DL
Talvacchio, J
Young, RM
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1999, 12 (11) : 698 - 700
[3] Design and fabrication of a voltage divider utilizing high-Tc ramp-edge Josephson junctions with a ground plane
Hashimoto, T
Inoue, S
Nagano, T
Yoshida, J
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1999, 9 (02) : 3821 - 3824
[4] High-resolution measurement by a high-Tc superconductor sampler
Hidaka, M
Satoh, T
Koike, M
Tahara, S
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1999, 9 (02) : 4081 - 4086
[5] Monte Carlo and thermal noise analysis of ultra-high-speed high temperature superconductor digital circuits
Jeffery, M
Xie, PY
Whiteley, SR
Van Duzer, T
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1999, 9 (02) : 4095 - 4098
[6] FLUXON INTERACTION IN AN OVERDAMPED JOSEPHSON TRANSMISSION-LINE
KAPLUNENKO, VK
[J]. APPLIED PHYSICS LETTERS, 1995, 66 (24) : 3365 - 3367
[7] RSFQ Logic/Memory Family: A New Josephson-Junction Technology for Sub-Terahertz-Clock-Frequency Digital Systems
Likharev, K. K.
Semenov, V. K.
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1991, 1 (01) : 3 - 28
[8] CHARACTERIZATION OF A SUPERCONDUCTIVE SIGMA-DELTA ANALOG-TO-DIGITAL CONVERTER
MILLER, DL
PRZYBYSZ, JX
MEIER, DL
KANG, JH
WORSHAM, AH
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1995, 5 (02) : 2453 - 2456
[9] Properties of interface-engineered high T-c Josephson junctions
Moeckly, BH
Char, K
[J]. APPLIED PHYSICS LETTERS, 1997, 71 (17) : 2526 - 2528
[10] JOSEPHSON SIGMA-DELTA MODULATOR FOR HIGH DYNAMIC RANGE A/D CONVERSION
Przybysz, John X.
Miller, D. L.
Naviasky, E. H.
Kang, J. H.
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1993, 3 (01) : 2732 - 2735

← 1 2 →