论文信息 - Small‐signal and large‐signal modeling of active devices using CAD‐optimized neural networks

Small‐signal and large‐signal modeling of active devices using CAD‐optimized neural networks

Artificial neural networks (ANNs) are presented for the technology‐independent modeling of active devices in MMICs. ANNs trained with S‐parameter and DC measurements over the entire bias and frequency operational band are used for the small‐signal bias‐dependent modeling of a low‐noise GaAs HEMT device, without the need of the equivalent circuit parameter extraction. ANNs are also used within the large‐signal model of a power MESFET device, modeling the drain‐source current Ids and charges Qg and Qd obtained from integration of their partial derivatives. After training and testing, the ANN models have been implemented as two‐port networks into a microwave circuit simulator. This enabled the ANN models to be used in the design, analysis, and optimization of microwave/mm‐wave circuits. Improved techniques in network building to provide not only accurate but also fast simulation models have been applied. © 2002 John Wiley & Sons, Inc. Int J RF and Microwave CAE 12: 71–78, 2002.

[1] R. Daniels,et al. A universal large/small signal 3-terminal FET model using a nonquasistatic charge-based approach , 1993 .

[2] Alessandra Costanzo,et al. A Fully Conservative Nonlinear Empirical Model of the Microwave FET , 1994, 1994 24th European Microwave Conference.

[3] Jukka Saarinen,et al. Novel technology independent neural network approach on device modelling interface , 1995 .

[4] S. Ciorciolini,et al. Novel non-linear equivalent circuit extraction scheme for microwave field-effect transistors , 1995, 1995 25th European Microwave Conference.

[5] Brian D. Ripley,et al. Pattern Recognition and Neural Networks , 1996 .

[6] Filiz Güneş,et al. Signal-noise neural network model for active microwave devices , 1996 .

[7] Naofumi Okubo,et al. Structural determination of multilayered large-signal neural-network HEMT model , 1998 .

[8] Mo-Yuen Chow,et al. Application of functional link neural network to HVAC thermal dynamic system identification , 1998, IEEE Trans. Ind. Electron..

[9] Fang Wang,et al. A hierarchical neural network approach to the development of library of neural models for microwave design , 1998, 1998 IEEE MTT-S International Microwave Symposium Digest (Cat. No.98CH36192).