Аңдатпа
The paper, for the first time, explores multivariable small signal modeling technique of GaN HEMT based on Decision tree. The proposed model presents a novel binary decision tree to model the GaN HEMT device for multi-biasing and broad frequency range. Bayesian algorithm has been used to find the optimal hyperparameters for better generalization capability and higher accuracy. An excellent agreement is found between the measured S-parameters and the proposed model for complete frequency range of 1GHz-18GHz.