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A Voltage-Controlled Chaotic Oscillator based on a CarbonNanotube Field-Effect Transistor for Low-Power Embedded Systems |
| Ha VanNguyen1,Wonkyeong Part2,NamTae Kim2,hanjung song |
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Abstract This paper presents a compact and low-power-based discrete-time chaotic oscillator based on a carbon nanotube field-effect transistor implemented using Wong and Deng’s well-known model. The chaotic circuit is composed of a nonlinear circuit that creates an adjustable chaos map, two sample and hold cells for capture and delay functions, and a voltage shifter that works as a buffer and adjusts the output voltage for feedback. The operation of the chaotic circuit was verified with the SPICE software package, which used a supply voltage of 0.9 V at a frequency of 20 kHz. The time series, frequency spectra, transition in phase space, sensitivity with initial condition diagrams, and bifurcation phenomena are presented. The main advantage of this circuit is that its chaotic signal can be generated while dissipating approximately 7.8 μW of power, making it suitable for embedded systems where many chaos-signal generators are required on a single chip.
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Received: 04 August 2013
Published: 07 November 2013
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Corresponding Authors:
hanjung song
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Cite this article:
Ha VanNguyen Wonkyeong Part NamTae Kim hanjung song A Voltage-Controlled Chaotic Oscillator based on a CarbonNanotube Field-Effect Transistor for Low-Power Embedded Systems Chin. Phys. B 0
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