论文标题
使用商业电路模拟器模拟行驶波超导参数放大器的行为
Simulating the behaviour of travelling wave superconducting parametric amplifiers using a commercial circuit simulator
论文作者
论文摘要
动力学电感波动波参数放大器（Ki-TWPA）已使用Keysight的高级设计系统（ADS）模拟。使用非线性电感器元件开发了超导传输线的总元素表示，以表示内在动力电感的当前依赖性。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设备（例如参数振荡器或放大器）中发生的参数过程，同时还允许优化随附的RF网络。该方法用于模拟在3波混合（3WM）和4波混合（4WM）方案中运行的精选数量Ki-TWPA设计的行为。从大型信号S-参数模拟中提取S参数和分散性能，并通过谐波平衡模拟生成每个放大器设计的增益曲线。将这些结果与耦合模式方程的分析解的增益表达进行了比较，同时参考了文献中等效ki-TWPA的增益曲线。
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.
