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.