Subthreshold-CMOS Chaotic Oscillator
Abstract
This paper reports on the design of a subthreshold-CMOS chaotic oscillator based on Chua's circuit. The circuit is autonomous and generates chaotic signals from three state variables in a manner analogous to a Chua circuit. Previous CMOS IC versions of the Chua circuit operate above threshold and make use of capacitors over 200 times larger than the subthreshold design. Also, this design is based on fundamentally nonlinear subthreshold building blocks permitting flexible adjustment of bifurcation parameters for investigation of complex phenomena not present in a piecewise linear model. Finally, this design incorporates all necessary elements on chip, eliminating the need for an external resistor. The combination of reduced size and flexible non-linearity make this design suitable for a single-chip VLSI synthesis of complex circuits making use of chaotic signals, including coupled maps generating spatio-temporal chaos and systems exploiting chaos synchronization.
Recommended Citation
J. E. Neeley and J. G. Harris, "Subthreshold-CMOS Chaotic Oscillator," Proceedings IEEE International Symposium on Circuits and Systems, vol. 3, pp. 269 - 271, Institute of Electrical and Electronics Engineers, Jan 1996.
Department(s)
Electrical and Computer Engineering
International Standard Serial Number (ISSN)
0271-4310
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jan 1996
