Simulation of a cubic-like Chua’s oscillator with variable characteristic

An implementation of a cubic-like Chua’s oscillator based on a nonlinear resistor implemented with two CMOS inverters and two linear resistors is proposed. This implementation allows one to change the shape of the characteristic function easily and this makes it easier to place the circuit in a given point of the α–βα–β diagram. A mathematical model is proposed for the simulation of the new characteristic function, and several theoretical and experimental tests are presented using commercial chip circuits.