ACCURACY OF NONOSCILLATING ONE-PORT NOISE MEASUREMENTS

This paper presents a detailed analysis of the accuracy of nonoscillat ing one-port device noise measurements. A new expression is given for the calculation of the noise temperature from parameters that can be m easured directly by using either a power sensor or a noise meter with the capability of making power measurements. A general expression for the DUT noise temperature error function is also obtained, which enabl es the authors to study how the noise measurement accuracy is affected by a number of different factors. This expression has been found very useful in order to study how the accuracy can be improved in a given noise measurement system. The error function has been applied to evalu ate the uncertainty of Schottky barrier device noise measurements.