Inductorless realization of nonautonomous MLC chaotic circuit using current-feedback operational amplifiers

ÇAM U., KILIÇ R.

JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS, vol.14, no.1, pp.99-107, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 1
  • Publication Date: 2005
  • Doi Number: 10.1142/s0218126605002180
  • Journal Name: JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.99-107
  • Keywords: chaotic circuits, current feedback op-amp (CFOA), inductance simulators, CHUA CIRCUIT, OP AMP, COMMUNICATION, OSCILLATOR
  • Dokuz Eylül University Affiliated: Yes

Abstract

An inductorless realization of nonautonomous (Murali-Lakshmanan-Chua) MLC chaotic circuit is proposed. The main purpose of this study is to improve the performance of nonautonomous MLC chaotic circuit using only CFOAs. CFOA-based topology used in this realization enables to simulate floating inductance. This modification provides to the designer wideband chaotic signals for secure communication systems. In addition to this major improvement, a CFOA-based nonlinear resistor was used in the new realization of nonautonomous MLC chaotic circuit. The usage of CFOA-based inductance simulator and nonlinear resistor in the circuit structure reduces the component count and provides isolated outputs. The performance of the proposed inductorless nonautonomous chaotic circuit is demonstrated with both PSpice simulations and experimental results.