摘要
为了对约瑟夫森结及其相关电路进行仿真研究,首次在Multisim中建立了约瑟夫森结的模型.利用Multisim对直流约瑟夫森效应,交流约瑟夫森效应进行了仿真验证.随后利用在Multisim中建立的模型对电阻电容电感并联约瑟夫森结(Resistively-Capacitively-Inductively Shunted Junction,RCLSJ)模型中的混沌行为,微波感应台阶,热噪声对台阶的影响以及RSFQ(Rapid Single Flux Quantum)电路进行了仿真研究.仿真结果证明了在Multisim中建立的模型对超导器件进行仿真研究是合理可行的,这对超导器件的分析和设计具有重要意义.
To investigate the properties of the Josephson junction and its related circuits,a model of Josephson junction in Multisim has been created.Both the DC（Direct Current） Josephson effect and AC（Active Current） Josephson effect are testified using the model in Multisim.Subsequently,we observe a quasi-periodic motion in the Josephson junction by studying chaotic behaviors of the resistively-capacitively-inductively shunted junction.Besides,we investigate the characteristics of Shapiro steps in chaos and its special effect under thermal noises.Finally,rapid single flux quantum circuit is constructed to convert DC pulse to SFQ（Single Flux Quantum）.The simulation results show that the model is powerful so that it can produce valuable predictions in the research of the Josephson junction,which plays an important role in analyzing and designing a superconductive device.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2010年第8期1886-1891,共6页
Acta Electronica Sinica
基金
博士点基金(No.200800551009)
国家973重点基础研究发展规划(No.2006CB601002)
