LNA noise parameter measurement
LNA noise parameter measurement
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LNA噪声参数测量
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
J. Nossek
中科院分区：
文献类型：
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作者：
Bernhard Lehmeyer;Michael T. Ivrlac;J. Nossek
本文研究了基于输入端阻抗输出功率测量的低噪声放大器（LNA）随机参数的联合测量。该方法的优点是可以在不需要特殊设备的情况下快速地确定窄带和宽带应用的噪声参数。了解噪声参数有助于用户为给定的低噪声放大器和优化放大器设计匹配网络。四个真实的参数表征放大器的噪声系数作为匹配网络的函数。大约十个不同的输入终端阻抗值也提供了这种新方法的灵敏度和准确性的估计。
Joint measurement of stochastic parameters of a low noise amplifier (LNA), based on output power measurement for input termination impedances is considered. As an advantage of this method the noise parameters can be determined in a quick way for narrow and broad band applications without special equipment. Knowing the noise parameters helps the user designing both matching networks for given low noise amplifiers and for optimizing amplifiers. Four real parameters characterize the amplifier with the noise figure as function of the matching network. About ten different values for input termination impedances also provide an estimation of sensitivity and accuracy of this new method.