DocumentCode :
1482893
Title :
Current conveyor chaos generators
Author :
Elwakil, A.S. ; Soliman, A.M.
Author_Institution :
Dept. of Electron. & Commun. Eng., Cairo Univ., Giza, Egypt
Volume :
46
Issue :
3
fYear :
1999
fDate :
3/1/1999 12:00:00 AM
Firstpage :
393
Lastpage :
398
Abstract :
New RC chaos generators that utilize the second-generation current conveyor (CCII) as the active building block are presented. The very small input resistance associated with the current conveyor low-impedance input terminal is shown to be responsible for stimulating the circuits´ chaotic nature. The proposed chaotic oscillators originate from two sinusoidal oscillator circuits which are modified for chaos by replacing one of the linear resistors with a nonlinear resistor of antisymmetric current-voltage characteristics and adding a single capacitor. The elementary linear design equations of the sinusoidal oscillators are used as a start point for chaos modification to estimate all component values and identify tunable elements. Mathematical models of the proposed generators are derived and further modified to demonstrate chaotic behavior with odd symmetrical nonlinearities. Suitability for VLSI integration is discussed. PSpice circuit simulations, numerical simulations of the derived models, and experimental results are included
Keywords :
RC circuits; chaos generators; current conveyors; nonlinear network analysis; nonlinear network synthesis; oscillators; CCII active building block; PSpice circuit simulations; RC chaos generators; VLSI integration suitability; antisymmetric current-voltage characteristics; chaotic behavior; chaotic oscillators; current conveyor chaos generators; low-impedance input terminal; mathematical models; nonlinear resistor; numerical simulations; odd symmetrical nonlinearities; second-generation current conveyor; sinusoidal oscillator circuits; Capacitors; Chaos; Circuit simulation; Current-voltage characteristics; Mathematical model; Nonlinear equations; Oscillators; Resistors; Tunable circuits and devices; Very large scale integration;
fLanguage :
English
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
1057-7122
Type :
jour
DOI :
10.1109/81.751313
Filename :
751313
Link To Document :
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