An IC implementation of a hysteresis two-port VCCS chaotic oscillator

Recently, researchers attempt to use chaos in applications such as chaotic communication, chaotic encryption, combinatorial optimization problems and chaotic computation. Chaotic integrated circuits are essential for a practical implementation of a large-scale chaotic system. A chaotic oscillator based on hysteresis two-port voltage-controlled current sources (2P-VCCS) has been extensively studied. In this paper, we propose an IC implementation of the hysteresis 2P-VCCS chaotic circuit. A prototype chip is designed with MOSIS TSMC 0.35 mum CMOS process. Through SPICE simulations with Spectre and experiments on the prototype chip, we illustrate a variety of dynamics from the proposed circuit including a quad screw attractor.