A Method and Apparatus for Quantitative Characterisation of Amplifier Application Characteristics

This paper presents a method and device for quantitative characterization of the application characteristics of an amplifier. Based on the correlation analysis of input and output signals of the amplifier in the application state, the Wenyan equation characterizing the distortion degree of the application characteristics of the device in the application state of the amplifier is proposed based on the correlation coefficient, and the application characteristics of the amplifier are quantitatively characterized by the distortion degree of the application characteristics. In addition, a quantitative application characteristic characterization device is presented, which includes an input signal acquisition card, an output signal acquisition card, a correlation analysis and application characteristic distortion calculation processing unit, and a display output unit, and an application example of the quantitative application characteristic characterization device is given in combination with a typical application circuit composed of an in-phase proportional amplifier circuit. The method proposed in this paper reflects the amplifier's amplification application characteristics quantitatively through the application characteristic distortion, which is more intuitive and effective than indirectly reflecting the application characteristics by the device electrical performance parameters.