Space Mapping Based Neuromodeling
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Fecha
2001-05
Autores
Rayas-Sánchez, José E.
Bandler, John W.
Título de la revista
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Editor
IEEE MTT-S International Microwave Symposium
Resumen
Descripción
A powerful concept in neuromodeling of microwave circuits based on Space Mapping technology is described. The ability of Artificial
Neural Networks (ANN) to model high-dimensional and highly nonlinear problems is exploited in the implementation of the Space
Mapping concept. By taking advantage of the vast set of empirical models already available for many microwave structures, Space
Mapping based neuromodels decrease the number of EM simulations for training, improve the generalization and extrapolation
performance and reduce the complexity of the ANN topology with respect to the conventional neuromodeling approach.
Five innovative techniques are proposed to create Space Mapping based neuromodels for microwave circuits: Space Mapped
Neuromodeling (SMN), Frequency-Dependent Space Mapped Neuromodeling (FDSMN), Frequency Space Mapped Neuromodeling
(FSMN), Frequency Mapped Neuromodeling (FMN) and Frequency Partial-Space Mapped Neuromodeling (FPSM). Excepting SMN, all
these approaches establish a frequency-sensitive neuromapping to expand the frequency region of accuracy of the empirical models
already available for microwave components that were developed using quasi-static analysis.
We contrast our approach with the conventional neuromodeling approach employed in the microwave arena, as well as with other state-ofthe-art neuromodeling techniques. We use Huber optimization to efficiently train the simple ANN that implements the mapping in our
SM-based neuromodels.
The five space mapping based neuromodeling techniques are illustrated by two case studies: a microstrip right angle bend and a hightemperature superconducting (HTS) quarter-wave parallel coupled-line microstrip filter.
Palabras clave
Frequency-Space Mapping Super Model (FSMSM), Microwave Circuits, Electromagnetic Based Design, Space Mapping
Citación
J. W. Bandler and J. E. Rayas-Sánchez, “Space Mapping Based Neuromodeling,” in IEEE MTT-S Int. Microwave Symp. Workshop Notes and Short Courses, Phoenix, AZ, May 2001.