A multiplierless hyperchaotic system using coupled Duffing oscillators

• Multiplierless hyperchaotic system using Duffing oscillators.
• A new hyperchaotic system with exclusively 2-D low dimensional system.
• Lyapunov spectra analysis of the model.
• Experimental design of the electronic circuit.

We present a 4-dimensional electrical model for realizing a multiplierless hyperchaotic system using two Duffing oscillators with a nonlinear resistive coupling. The corresponding hyperchaotic attractor is not only numerically verified through investigating phase portraits and Lyapunov exponents spectra, but also realized experimentally by a simple electronic circuit.