论文标题
多端子方法进行热噪声和低温实验的散射参数模拟
A Multiport Approach to Thermal Noise and Scattering Parameter Simulation of Cryogenic Experiments
论文作者
论文摘要
在本文中，开发，证明和验证了一种用于详细的系统级热噪声分析的简单算法。该方法使用噪声波理论和噪声协方差矩阵来在不同温度下级联噪声和散射参数。该方法解决了返回损失，多托隔离/耦合以及组件之间的静态温度差异的影响，并且在噪声温度处于或接近量子噪声限制的情况下将起作用。首先，将证明理想的多顾问网络表明，当组件参数（例如返回损失和隔离）是理想的时，该方法的结果与Friis Cascade是一致的。遵循理想的多项票面示例，进行了一个低温实验，以证明当使用真实数据时，提出的仿真方法是成功的。
In this paper, a simple algorithm for detailed system-level thermal noise analysis is developed, demonstrated, and verified. This method uses noise-wave theory and noise covariance matrices to cascade noise and scattering parameters of multiport devices at different temperatures. This method addresses the effects of return loss, multiport isolation/coupling, and static temperature differentials between components, and will work in cases where the noise temperature is at or near the quantum noise limit. An ideal multidevice network will first be demonstrated to show that this method's results are consistent with the Friis cascade when component parameters such as return loss and isolation are ideal. Following the ideal multidevice example, a cryogenic experiment is conducted to demonstrate that the proposed simulation method is successful when real data are used.
