SISMA: A Numerical Simulation Software for SIS Mixer Design
SISMA: A Numerical Simulation Software for SIS Mixer Design
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DOI：
10.1109/irmmw-thz.2018.8510451
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发表时间：
2018-09
期刊：
影响因子：
--
通讯作者：
W. Shan;Wentao Wu;S. Shi
中科院分区：
文献类型：
--
作者：
W. Shan;Wentao Wu;S. Shi
SISMA是一个用于设计单结或结阵列SIS混频器的数值模拟软件。它是基于量子混合理论和近似的非线性高达2次谐波。设计了一种新的固定点迭代算法求解大信号非线性方程，该算法能够模拟具有分布式串联结阵列的SIS混频器，克服了只能模拟并联结阵列的局限性。在薄膜超导无源元件的仿真中，可以计算出各种超导材料的温度和频率依赖的复表面阻抗。该软件的图形界面有利于混频器电路的快速优化设计。
SISMA is a numerical simulation software programmed for the design of SIS mixers with single junction or junction arrays. It is based on quantum mixing theory and a proximation of the nonlinearity up to 2nd harmonic. A new fixed-point iteration algorithm is designed to solve the large-signal nonlinear equation, which enables simulations of SIS mixers with distributed series-connected junction arrays, removing the limitation that only parallel-connected junction arrays can be simulated. The temperature and frequency-dependent complex surface impedances of various superconducting materials can be calculated in the simulation of thin-film superconducting passive components. The graphic interface of this software is a beneficial to fast optimization of the mixer circuit design.