Table-look-up modeling of microwave electron devices needs data interpolation algorithms with specific requirements. In the paper, an original data approximating formula is adopted in the framework of a well-known LUTbased nonlinear device model. Accurate intermodulation distortion prediction for highly linear power amplifier design is proven to be strongly dependent on the data interpolation/ approximation. The proposed procedure provides more accurate reconstruction of sampled functions and related derivatives than conventional splines. The LUT-based model is shown to provide accurate predictions of the third order intermodulation product even at extremely low levels.
A. Santarelli, D. Resca, A. Raffo, V. Di Giacomo, P. A. Traverso, G. Vannini, et al. (2007). Optimal function approximation for empirical look-up-table device models (invited). ROMA : Aracne Editrice srl.
Optimal function approximation for empirical look-up-table device models (invited)
SANTARELLI, ALBERTO;RESCA, DAVIDE;TRAVERSO, PIER ANDREA;FILICORI, FABIO
2007
Abstract
Table-look-up modeling of microwave electron devices needs data interpolation algorithms with specific requirements. In the paper, an original data approximating formula is adopted in the framework of a well-known LUTbased nonlinear device model. Accurate intermodulation distortion prediction for highly linear power amplifier design is proven to be strongly dependent on the data interpolation/ approximation. The proposed procedure provides more accurate reconstruction of sampled functions and related derivatives than conventional splines. The LUT-based model is shown to provide accurate predictions of the third order intermodulation product even at extremely low levels.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.