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

Abstract

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.