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Realization of Fractional-Order Double-Scroll Chaotic System Using Operational Transconductance Amplifier (OTA)

Department of Electronics and Instrumentation Technology, University of Kashmir, Hazratbal 190006, Srinagar, Jammu and Kashmir, India

E-mail Address: darmrafiq.ku@gmail.com

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Nasir Ali Kant

Department of Electronics and Instrumentation Technology, University of Kashmir, Hazratbal 190006, Srinagar, Jammu and Kashmir, India

E-mail Address: nsrknt@gmail.com

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, and

Farooq Ahmad Khanday

http://orcid.org/0000-0002-2514-5703

Department of Electronics and Instrumentation Technology, University of Kashmir, Hazratbal 190006, Srinagar, Jammu and Kashmir, India

E-mail Address: farooqkhanday@kashmiruniversity.ac.in

Corresponding author.

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https://doi.org/10.1142/S0218126618500068Cited by:20 (Source: Crossref)

Abstract

Realization of fractional-order double-scroll chaotic system using Operational Transconductance Amplifiers (OTAs) as active elements are presented in this paper. The fractional-order double-scroll chaotic system has been studied before as well using passive RC-ladder and tree-based structures but in this paper the requisite fractional-order integration has been accomplished through an integer-order multiple-feedback topology. As compared to double or multiple scroll chaotic systems existing in the open literature, the proposed realization offers the advantages of (a) low-voltage implementation, (b) integrablity as the design is resistor- and inductor-less and only grounded components have been employed in the design, and, (c) electronic tunability of the fractional order, time-constants and gain factors. In order to demonstrate the usefulness of the chaotic system, a simple secure message communication system has been designed and verified for its operation. The theoretical predictions of the proposed implementations have been verified by using 0.35 $μ$ $μ$ m complementary metal oxide semiconductor (CMOS) process file provided by Austrian Micro System (AMS).

This paper was recommended by Regional Editor Piero Malcovati.

Keywords:

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