用商用电路模拟器模拟行波超导参量放大器的特性
Simulating the behaviour of travelling wave superconducting parametric amplifiers using a commercial circuit simulator
摘要：
使用是德科技的先进设计系统（ADS）对动态电感行波参量放大器（KI-TWPA）进行了仿真。用非线性电感元件表示超导传输线的本征动态电感与电流的关系，建立了超导传输线的集总元件表示法。这提供了一种快速、简单且易于修改的方法，用于分析非线性动力学电感器件（如参量振荡器或放大器）中发生的参量过程，同时还允许优化伴随的RF网络。这种方法是用来模拟的行为选择一些KI-TWPA设计在3波混频（3 WM）和4波混频（4 WM）制度。从大信号S参数模拟中提取S参数和色散特性，并且从谐波平衡模拟中生成每个放大器设计的增益曲线。这些结果进行了比较，从耦合模方程的解析解的增益表达式，同时参考文献中的等效KI-TWPA的增益曲线。
英文摘要：
Kinetic inductance travelling wave parametric amplifiers (KI-TWPAs) have been simulated using Keysight's Advanced Design System (ADS). A lumped element representation of a superconducting transmission line has been developed using nonlinear inductor elements to represent the current dependency of the intrinsic kinetic inductance. This provides a fast, simple and easily modifiable method for analysing the parametric processes that occur in nonlinear kinetic inductance devices such as parametric oscillators or amplifiers, while also allowing the accompanying RF network to be optimised. This methodology is used to model the behaviour of a select number of KI-TWPA designs operating in the 3-wave mixing (3WM) and 4-wave mixing (4WM) regimes. S-parameters and dispersion properties are extracted from large signal S-parameter simulations and the gain curve of each amplifier design is generated from harmonic balance simulations. Results of these are compared to the gain expression from the analytic solutions of the coupled mode equations, while making reference to the gain curves of the equivalent KI-TWPAs from literature.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
