Compact Behavioral Models of Nonlinear Active Devices Using Response Surface Methodology
Paweł Barmuta , Francesco Ferranti , Gian Piero Gibiino , Arkadiusz Lewandowski , DMM-P Schreurs,
AbstractThis paper presents the response surface methodology in modeling of nonlinear microwave devices. First, different combinations of sampling techniques and types of radial basis functions are evaluated in simulations of the drain current of a 0.15- μm GaAs HEMT transistor described by the Chalmers model. It allows to determine the best settings of the response surface methodology for the modeling of active microwave devices. It is shown that the best sampling strategy is a combination of space-exploration (Voronoi), problem-exploitation (LOLA), and model-error-driven sample rankers. From the various radial basis function models, the fastest convergence is achieved with exponential functions. This knowledge is then used in behavioral modeling of a low-power amplifier AG303 measured in the load-pull setup. It is shown that the response surface methodology outperforms commonly used factorial design of experiments. Moreover, it gives accurate models within just a few tens of samples. However, attention has to be paid at the noisy regions, which might be oversampled by the sampling techniques.
|Journal series||IEEE Transactions on Microwave Theory and Techniques, ISSN 0018-9480, (A 35 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||Active device modeling behavioral modeling experimental design load pull response surface|
|Score|| = 35.0, 27-03-2017, ArticleFromJournal|
= 35.0, 27-03-2017, ArticleFromJournal
|Publication indicators||: 2015 = 2.284 (2) - 2015=2.36 (5)|
|Citation count*||14 (2018-11-15)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.