Fast and simple technique for computing circuit noise figure from component noise model using artificial neural network

Artificial neural network (ANN) modeling approach to analyze noise figure (NF) of the entire circuit is proposed for the first time. In the proposed technique, the effects of input and output matching networks on the circuit´s NF are analyzed respectively. The neural network model is exploited to represent the relationship between matching networks and circuit´s NF. Developed ANN model allows the RF amplifier designers to acquire an accurate system noise figure conveniently and effectively. Two amplifier circuit examples are used to demonstrate our proposed method.