Drain-Source Symmetric Artificial Neural Network-Based FET Model with Robust Extrapolation Beyond Training Data

A large-signal FET model based on artificial neural networks (ANNs) is extended for rigorous intrinsic drain-source symmetry and robust extrapolation beyond the range of training data. Enhanced ANN architectures and training algorithms constrain the five nonlinear model state functions to transform according to the discrete symmetry rules related to the device invariance with respect to intrinsic drain-source exchange. This extends the applicability of the previous ANN-based model to situations where the instantaneous voltage crosses Vds= 0, such as switches and mixers. The model is compiled in Agilent ADS, together with advanced extrapolation routines extending the model beyond the range of training data for improved convergence. The model has been generated for FETs from several III-V semiconductor processes, and validated with extensive independent small and large-signal measurements.

[1]  Jianjun Xu,et al.  Measurement-Based Non-Quasi-Static Large-Signal FET Model Using Artificial Neural Networks , 2006, 2006 IEEE MTT-S International Microwave Symposium Digest.

[2]  Michael Ian Shamos,et al.  Computational geometry: an introduction , 1985 .

[3]  Simon Haykin,et al.  Neural Networks: A Comprehensive Foundation , 1998 .

[4]  T. Hrycej Symmetric properties of neural networks for control applications , 1994, Proceedings of 1994 IEEE International Conference on Neural Networks (ICNN'94).

[5]  D.E. Root,et al.  A symmetric and thermally de-embedded nonlinear FET model for wireless and microwave applications , 2004, 2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535).

[6]  M.C.E. Yagoub,et al.  Exact adjoint sensitivity analysis for neural based microwave modeling and design , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).

[7]  Qi-Jun Zhang,et al.  Neural Networks for RF and Microwave Design , 2000 .

[8]  Franco P. Preparata,et al.  Sequencing-by-hybridization revisited: the analog-spectrum proposal , 2004, IEEE/ACM Transactions on Computational Biology and Bioinformatics.