  The use of non-ideal features of semiconductor devices is an interesting
option for implementations of nonlinear electronic systems. This paper analyzes
the Chua circuit with nonlinearity based on the exponential hyperbolic
characteristics of semiconductor devices. The stability analysis using
describing functions predicts the dynamics of this nonlinear system, which is
corroborated by numerical investigations and experimental results. The dynamic
behaviors and bifurcations of this nonlinear system are mapped in parameter
space in order to create a base for studies, analyses, and designs. The dynamic
behavior of the experimental high speed implementation of this version of Chua
circuit differs from the expected dynamics for a conventional Chua circuit due
to effects of unmodelled non-idealities of the real semiconductor devices,
displaying that new and different dynamics for the Chua circuit can be obtained
exploring different nonlinearities.
