Improved realization of canonical Chua's circuit with synthetic inductor using current feedback operational amplifiers

TL;DR

This paper presents an improved inductorless Chua's circuit implementation using current feedback operational amplifiers, enabling higher frequency operation and better performance verified through simulations and hardware tests.

Contribution

The paper introduces a novel inductorless Chua's circuit design employing CFOAs, enhancing high-frequency performance and providing direct buffered outputs of state variables.

Findings

High-frequency operation achieved with CFOA-based circuit

Simulation results match theoretical estimates

Hardware experiments confirm improved performance

Abstract

In this paper, we report an improved implementation of an inductorless third order autonomous canonical Chua's circuit. The active elements as well as the synthetic inductor employed in this circuit are designed using current feedback operational amplifiers (CFOAs). The reason for employing CFOAs is that they have better features such as high slew rate, high speed of operation, etc., which enable the circuit to operate at higher frequency ranges, when compared to the circuits designed using voltage operational amplifiers. In addition to this, the inclusion of CFOAs provide a buffered output which directly represent a state variable of the system. The Multisim simulations in the time and frequency domains confirm the theoretical estimates of the performance of the proposed circuit at high frequencies. It is also confirmed through hardware experiments.