Characterization of a non-autonomous second-order non-linear circuit for secure data transmission

• Published in: Chaos, solitons and fractals Vol. 33; no. 4; pp. 1248 - 1255
• Main Authors: Miliou, A.N., Valaristos, A.P., Stavrinides, S.G., Kyritsi, K., Anagnostopoulos, A.N.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-08-2007
• ISSN: 0960-0779; 1873-2887
• DOI: 10.1016/j.chaos.2006.01.079

A second-order non-linear non-autonomous electronic circuit, which contains an amplifier, two integrators and a comparator, is studied. For a certain set of values for the circuit’s parameters (amplitude and frequency of the driving signal and
R
C values), the circuit’s output signal is non-periodic. From the numerically calculated output signal, the correlation dimension and the Kolmogorov entropy are derived. Their values prove that the dynamical system realized by the studied circuit is a deterministic chaotic one. Moreover, the influence of artificial white noise on the original signal was investigated and the results show that only noise levels higher than 1% begin to affect the signal significantly.