Summary
International Symposium on Nonlinear Theory and its Applications
2008
Session Number:C2L-F
Session:
Number:C2L-F3
A Fully-Differential Multi-Hysteresis Two-Port VCCS Chaotic Oscillator Integrated Circuit
Takuya Hamada, Yoshihiko Horio, Ryosuke Domae, Kenya Jin’no, Kazuyuki Aihara,
pp.-
Publication Date:2008/9/7
Online ISSN:2188-5079
Summary:
We propose a chaotic oscillator based on multi-hysteresis two-port voltage-controlled current sources (2P-VCCSs). In particular, we propose a novel method to obtain a multi-hysteresis VCCS with multiple switching points in its hysteresis characteristic. The proposed chaotic oscillator can have a complex chaotic attractors with many switching points. Moreover, we propose a fully-differential integrated circuit technique that implements the proposed multi-hysteresis VCCS. We also implement a fully-differential 2P-VCCS chaotic oscillator circuit using the multi-hysteresis VCCS circuits. With these circuits, we can obtain a variety of chaotic dynamics by modifying hysteresis characteristics through the external control voltages. We make a prototype integrated circuit for the proposed chaotic oscillator with TSMC 0.35 μm CMOS semiconductor process. Through SPICE simulations and measurements on the prototype chip, we confirm a variety of dynamics from the proposed circuit.