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Single amplifier biquad based inductor-free Chua’s circuit

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Abstract

The present paper reports an inductor-free realization of Chua’s circuit, which is designed by suitably cascading a single amplifier biquad based active band pass filter with a Chua’s diode. The system has been mathematically modeled with three-coupled first-order autonomous nonlinear differential equations. It has been shown through numerical simulations of the mathematical model and hardware experiments that the circuit emulates the behaviors of a classical Chua’s circuit, e.g., fixed point behavior, limit cycle oscillation, period doubling cascade, chaotic spiral attractors, chaotic double scrolls and boundary crisis. The occurrence of chaotic oscillation has been established through experimental power spectrum, and quantified with the dynamical measure like Lyapunov exponents.

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Authors and Affiliations

  1. Nonlinear Electronics Research Laboratory (RF and Microwave), Department of Physics, The University of Burdwan, Burdwan, 713 104, West Bengal, India

    Tanmoy Banerjee

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  1. Tanmoy Banerjee
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Correspondence to Tanmoy Banerjee.

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Banerjee, T. Single amplifier biquad based inductor-free Chua’s circuit. Nonlinear Dyn 68, 565–573 (2012). https://doi.org/10.1007/s11071-011-0238-5

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  • DOI: https://doi.org/10.1007/s11071-011-0238-5

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