A voltage-controlled chaotic oscillator based on carbon nanotube field-effect transistor for low-power embedded systems

被引：0

作者：

Van Ha Nguyen ^{[1
]}

Wonkyeong Park ^{[1
]}

Namtae Kim ^{[2
]}

Hanjung Song ^{[1
,3
]}

机构：

[1] Department of Nano Systems Engineering,Inje University

[2] Department of Electronics Engineering,Inje University

[3] Center for Nano Manufacturing,Inje University

来源：

Chinese Physics B | 2014年 / 23卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

chaos generator; carbon nanotube field-effect transistor; bifurcation; random noise generator;

D O I：

暂无

中图分类号：

TB383.1 []; O415.5 [混沌理论];

学科分类号：

070201 ; 070205 ; 080501 ; 1406 ;

摘要：

This paper presents a compact and low-power-based discrete-time chaotic oscillator based on a carbon nanotube fieldeffect 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 is verified with the SPICE software package, which uses a supply voltage of 0.9 V at a frequency of 20 kHz. The time series, frequency spectra, transitions in phase space, sensitivity with the 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.

引用

页码：621 / 626

页数：6