Higher-order chaotic oscillator using active bessel filter

Erik Lindberg, Gytis Mykolaitis, Skaidra Bumelien, Tatjana Pyragien, Arnas TamaŠeviius, Elena TamaŠeviit, Raimundas Kirvaitis

Research output: Contribution to journalJournal articleResearchpeer-review


A higher-order oscillator, including a nonlinear unit and an 8th-order low-pass active Bessel filter is described. The Bessel unit plays the role of "three-in-one": a delay line, an amplifier and a filter. Results of hardware experiments and numerical simulation are presented. Depending on the parameters of the nonlinear unit the oscillator operates either in a one-scroll or two-scroll mode. Two positive Lyapunov exponents, found at larger values of the negative slopes of the nonlinear function, characterize the oscillations as hyperchaotic.
Original languageEnglish
JournalJournal of Circuits, Systems and Computers
Issue number4
Pages (from-to)859-869
Publication statusPublished - 2010


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