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arXiv 2209.04008physics.ins-det
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低温实验热噪声和散射参数的多端口模拟方法

A Multiport Approach to Thermal Noise and Scattering Parameter Simulation of Cryogenic Experiments

Maurio B. Grando, Christian R. Boutan, Jihee Yang

摘要:

在本文中,详细的系统级热噪声分析的一个简单的算法开发,演示和验证。该方法利用噪声波理论和噪声协方差矩阵,将多端口器件在不同温度下的噪声和散射参数级联起来。该方法解决了回波损耗、多端口隔离/耦合和元件之间的静态温差的影响,并且将在噪声温度处于或接近量子噪声极限的情况下工作。一个理想的多器件网络将首先演示,以表明这种方法的结果是一致的弗里斯级联元件的参数,如回波损耗和隔离度是理想的。以下理想的多设备的例子,低温实验进行证明,所提出的模拟方法是成功的,当使用真实数据。

英文摘要:

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.

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。

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